• 한국자원식물학회지
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• 제9권2호
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• pp.197-201
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• 1996

참당귀(當歸) 추대억제(抽臺抑制) 재배법(栽培法)을 개발하기 위하여 종자를 조기에 파종, 육묘하여 본포에 이식한 후 당년가을에 수확한 뿌리의 부위별(部位別) 주성분(主成分)을 관행재배한 당귀와 비교하므로서 1년생 당귀의 추대억제효과와 약재로서의 가치를 평가하고저 하였다. 1. 관행(慣行) 재배(栽培)한 2년생 당귀의 뿌리내 decursin 과 decursionol angelate의 함량을 합한 평균치는 6.47% 임에 비하여, 단기육묘(短期育苗)하여 수확한 1년생 뿌리 내에서의 함량은 4.82%로 낮은 경향이었다. 2. 약효성분(藥效成分)의 부위별(部位別) 함량은 세근(지근)과 피충부가 높은 반면 중심주에서는 낮은 경향이었다. 3. Decursin및 decursinol angelate의 구성비(構成比)는 1년생에서는 10 : 7.5, 2년생에서는 10 : 6의 비율로 2년생에서 는 decursinol angelate 함량이 감소하는 경향이었다. 또한 2년생에서는 부위에 관계없이 두성분의 구성비가 60% 정도로 안정적인데 반해, 1년생에서는 세근과 지근에서 decursional angelate 구성비가 높은 경향이었다. 4. 조기(早期) 육묘재배(育苗栽培)한 1년생 당귀의 생약적(生藥的) 가치(價値)는 일정 면적(面積)에서의 수량(收量)이나 또는 단순한 성분함(成分含) 양면(量面)에서 무리가 없을 것으로 사료되지만, 주성분인 decursin의 구조이성체인 decursinol angelate와의 구성비(構成比)에 따른 효능상의 문제는 추후 검토가 요망된다.

• 한국환경과학회지
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• 제21권8호
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• pp.1023-1030
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• 2012

Contents of ginsenosides 7 subordinations of two-year ginseng (fresh ginseng) is 1.27% and three-year ginseng is 2.09%, so the three-year ginseng root increased 64.9% compared to the two-year root. Compared with the comparison group, ginsenosides component content of KEM+SAF-applied group increased 24% in case of the two-year root and 20% in case of the three-year root. In vitamin C content, two-year root showed 59.4% higher and three-year root showed 37.7% higher in KEM+SAF applied group compared with the comparison group. In case of vitamin E, the two-year root indicated 5.6% higher and three-year root indicated 1.5% higher in KEM+SAF applied group compared with the comparison group, but there is no significant difference. In phytosterol three components (campesterol, stigmasterol, sitosterol), two-year root showed 25.3, 3.6, 14.1% higher for each, and three-year root showed 23.6, 6.8, 12.9% higher in KEM+SAF applied group and 14.4% was higher on average. In DPPH, two-year root indicated 34.4% higher and three-year root indicated 42.4% higher in KEM+SAF applied group compared to the comparison group. To sum up the results, KEM+SAF applied group showed (1)22% ginsenosides components content, (2)48.6% vitamin C content, (3)3.6% vitamin E content, (4)14.4% phytosterol content, (5)38.4% DPPH higher averagely compared to the comparison group.

• 한국토양비료학회지
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• 제46권6호
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• pp.525-529
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• 2013

As most of citrus, shiranuhi mandarin ((Citrus unshiu ${\times}$ C. sinensis) ${\times}$ C. reticulata) mainly use the trifoliate orange (Poncirus trifoliata) as its rootstock which has dwarf and cold hardness in Korea. However, recently, scion root was observed in 'Shiranuhi' mandarin tree grafted onto the trifoliate orange. This study was carried out to find out effects of scion root occurrence on the fruit quality, flowering and yield of shiranuhi mandarin. For the experiment, we selected six farmers who have outbreak of scion root in their Shiranuhi mandarin orchards and surveyed the difference of fruit quality of shiranuhi mandarin hybrid between scion root and control (trifoliate orange root). In the results, flowering was severely decreased in scion root trees compared to control. As a result of survey of 174 Shiranuhi mandarins, 160 trees were proved to be scion root, and had less flowering. Fruiting of scion root also severely dropped compared to control and thus, yields of scion root (6.4 kg) reduced by 24% compared to control (26.7 kg). The fruit size, weight and soluble solid contents of scion root were significantly reduced, but there were no differences in acid contents and coloring of fruit. From the results, we concluded that scion root had negative influence on flowering, fruit size and the yields of Shrinanuhi mandarin hybrid.

• 한국지역사회생활과학회지
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• 제27권4호
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• pp.817-829
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• 2016

In order to develop functional hamburger steak patties, various concentrations of lotus root (Nelumbo nucifera) were incorporated into them. The quality characteristics of the hamburger patties prepared after the addition of 5, 10, 15, 20 or 25% (w/w) lotus root were investigated. The moisture contents of the groups with lotus root were significantly higher than that of the control group. The crude fat and crude protein contents of the control group were higher than those of the other groups. No significant difference in the crude ash content was observed among the groups. The cooking loss rate, rate of reduction in diameter, and reduction in thickness of the groups with lotus root were significantly lower than those of the control group. Accroding to the results, lotus root inhibit cooking loss and help to keep moisture after cooking process. No significant difference in the L value was observed among the groups. The a and b values of the groups with lotus root were significantly decreased compared to those of the control group. No significant difference in hardness was observed among the groups. it suggest lotus root didn't affect the texture of hamburger patties. In the quantitative descriptive analysis, no significant difference in the color and fresh odor was observed among the groups. The groups with lotus root were softer than the control group. The groups with 10 to 25 % of lotus root showed higher juiciness and a sweeter taste than the control group. The preference of appearance, texture, flavor and overall acceptability of the groups with 10 to 25% lotus root were higher than those of the other groups, including the control group. In conclusion, lotus root can increase the acceptability of hamburger patties and 10-25% would appear to be the proper amount of it to use.

• 대한소아치과학회지
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• 제45권1호
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• pp.10-20
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• 2018

본 연구는 미성숙 영구치에서 치근 파절 시 치수와 치근 치유에 영향을 주는 요인을 평가하기 위해 치근 파절위치, 치근단공의 크기, 파절편 간격을 측정하였고, 치수와 치근 치유 양상과의 연관성을 통계적으로 분석하여 치근 파절시 예후를 알아보고자 하였다. 51개의 상악 전치부 치근 파절 증례를 대상으로 치근 파절위치, 치근단공의 크기, 파절편 간격을 방사선 사진에서 길이를 측정하였다. 측정된 수치는 독립 T검증, 로지스틱 회귀분석을 통해 평가하였다. 본 연구의 결과, 치근 파절의 위치에 따른 치수 치유의 예후의 차이는 없었다. 그러나 치근 파절의 위치가 치근단에 위치할수록 치근 치유는 잘 일어났으며(p < 0.05), 정복 후 파절편 간격이 좁을수록 치수 치유가 잘 일어남을 확인하였다(p < 0.05).

• Restorative Dentistry and Endodontics
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• 제21권1호
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• pp.289-299
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• 1996

It is necessary to measure the length of a root canal in order to attain a satisfactory prognosis after root canal therapy. There are several methods for determining root canal length, such as tactile sensation by the dental practitioner, the utilization of x-ray film, and electronic root canal measurement. Among these, the electrical measurement methods, in which the impedence between the oral mucous membrane and periodontal membrane is determined, have advantages of simplicity and accuracy. During root canal treatment, the root canal contains a solution of high electrical conductivity such as pus, blood, sodium hypochlorite and so on. Recently a new electronic root canal measurement device of frequency-dependent type has been developed, which is capable of measuring the length of root canal under moist conditions. Endex and Root ZX, which are frequency-dependent type, were evaluated for accuracy of measuring root canal length in vivo by stereomicroscope. The result were as follows ; 1. 82.5% of Endex and 87.5% of Root ZX measured in the range of ${\pm}0.5$ mm from the apical foramen and both showed 57.5 % in the range of 0.1 mm to 0.5 mm. 2. Endex showed significantly higher accuracy in vital teeth than nonvital teeth(p<0.05). But in case of Root ZX, there was no significant difference between vital and nonvital teeth. 3. As a result of this study, there was no significant difference in accuracy between Endex and Root ZX, and both devices showed file passes the apical foramen in more than half of the cases, and it is thought that this must be considered clinically.

• 생물환경조절학회지
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• 제5권2호
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• pp.138-144
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• 1996

비트 재배에 알맞은 양액 농도를 구명하고자 근비대기 개시기(직경 1cm 정도)전후에 양액 농도가 생육과 몇 가지 성분에 미치는 영향을 조사하였다. Yamazaki 상추 용액을 근비대기 전에 0.5, 1, 2, 4배, 그리고 각각을 근비대 시작 후에 0.5, 1, 2, 4배로 처리하여 다음과 같은 결과를 얻었다. 뿌리의 무게는 초기 0.5, 1, 2배액의 경우에 후기에 4배액 처리가 좋았다. 그러나 후기 4배액 처리구에서는 뿌리의 바람들이와 열근율이 높았다. 비타민 C는 근비대 후기에 너무 높거나 낮은 농도 처리 시 낮았다. 그러나 bataxanthin과 batacyanin은 비대기 전 농도에 관계없이 후기 처리 농도가 낮을수록 높았다. 따라서 비트에 가장 알맞은 농도는 초기에 1-2배액, 후기에 2배액을 쓰는 것이 좋다고 본다.

• 한국조경학회지
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• 제31권5호
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• pp.1-10
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• 2003

The purpose of this study was to verify the shore margin protection effect of a root system developed from direct sticking of Salix gracilistyla Miq., focusing on the reinforcement of soil shear strength. The materials were 20cm long sticks whose average diameter and weight were 7.52mm and 14.58g respectively, and sandy loam(Sand 60.36%, Silt 28%, Clay 11.64%), whose maximum dry weight(${\gamma}$$_{dmax}$) was 1.59gf/㎤ at the water ratio( $W_{opt}$) 13.8%. The direct shearing test(KS F 2343) was applied to cylindric columms(diameter 132mm) of pure soil and two years old root reinforced soil. At each condition of vertical stress, 10N/$ extrm{cm}^2$, 14.41N/$\textrm{cm}^2$ and 18.82 N/$\textrm{cm}^2$, five soil+root columns were sheared. After shear tests, the root area ratio and soil moisture on the shear plane were measured. The results of this research were as follows: 1. The average of root area ratio was 1.86% and the soil moisture 14.67%. 2. Two years old root system was found to increase the soil shear strength of pure soil in terms of Cohesion(C) and Inner friction Angle($\phi$) as follows. 3. The relationship between root area ratio and the increased shear strength can be presented with the following equation, $\Delta$S ≒ 0.33ㆍ TrㆍAs/A $\Delta$S : Increased Shear Strength Tr : Average Tension Strength of Root, Ar/A : Root Area Ratioioage Tension Strength of Root, Ar/A : Root Area Ratio

• 한국지역사회생활과학회지
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• 제28권2호
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• pp.203-215
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• 2017

This study was carried out to compare the major nutrient components and antioxidant activities of Stachys sieboldii Miq leaf and root powders. For proximate compositions, crude protein and crude fat contents of leaf powder were higher than those of root powder, whereas contents of crude ash and carbohydrates were lower in leaf powder. The content of glutamic acid was greater in amino acids of leaf and root powders, and contents of total amino acids and essential amino acids were higher in leaf powder compared with root powder. Root powder contained a higher level of total unsaturated fatty acids than leaf powder. Total contents of organic acids were higher in leaf powder; tartaric acid was the major organic acid in leaf powder, and malic acid was the major organic acid in root powder. The content of vitamin A was higher in leaf powder than in root powder. However, vitamin E content was higher in root powder than in leaf powder. Total mineral contents of leaf powder were higher than those of root powder, and mineral contents of leaf and root powders were in the order of K>Ca>Mg. Extract yields of leaf and root powders were 27.21% and 58.51%, respectively. Total polyphenols and total flavonoids of leaf extract were 236.35 mg/g and 1.90 mg/g, respectively, which were higher than those of root extract. The $IC_{50}$ values of leaf and root ethanol extracts based on DPPH hydroxyl scavenging were 0.69 mg/mL and 5934.31 mg/mL, respectively, and antioxidative activities of ethanol extracts from all Stachys sieboldii Miq parts dose-dependently increased. These results suggest that Stachys sieboldii Miq can be recommended as an edible functional food material.

• Journal of Ginseng Research
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• 제31권3호
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• pp.142-146
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• 2007

본 시험은 경흔적수 측정법으로 수삼의 연근을 판별하기 위하여, 4, 5, 6년근의 경흔적수 발생실태를 조사하였다. 경흔적수를 이용한 연근판별법은 3년근 경흔적부터 식별가능하여 경흔적수에 2를 더하면 년근판별이 가능하였다. 년근별 경흔적수가 4년생에서 2개 발생율이 89.5%, 5년생에서 3개 발생율이 79.7% 6년생에서 4개 발생율이 46.3%로, 4, 5년근의 판별은 가능하였으나, 6년근 판별은 정확도가 낮아 보조자료로 활용함이 타당하였다. 경흔적을 이용한 연근 판별의 제한요인으로 뇌두파손과 다경발생임을 확인하였고, 뇌두파손율과 다경발생율은 년근이 증가함에 따라 증가되었다.