• 한국의학물리학회지:의학물리
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• 제11권2호
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• pp.147-155
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• 2000

Patient dose verification is one of the most important parts in quality assurance of the treatment delivery for radiation therapy. The dose distributions may be meaningfully improved by modulating two dimensional intensity profile of the individual high energy radiation beams In this study, a new method is presented for the pre-treatment dosimetric verification of these two dimensional distributions of beam intensity by means of a charge coupled device video camera-based fluoroscopic device (henceforth called as CCD-VCFD) as a radiation detecter with a custom-made software for dose calculation from fluorescence signals. This system of dosimeter (CCD-VCFD) could reproduce three dimensional (3D) relative dose distribution from the digitized fluoroscopic signals for small (1.0$\times$1.0 cm$^2$ square, ø 1.0 cm circular ) and large (30$\times$30cm$^2$) field sizes used in intensity modulated radiation therapy (IMRT). For the small beam sizes of photon and electron, the calculations are performed In absolute beam fluence profiles which are usually used for calculation of the patient dose distribution. The good linearity with respect to the absorbed dose, independence of dose rate, and three dimensional profiles of small beams using the CCD-VCFD were demonstrated by relative measurements in high energy Photon (15 MV) and electron (9 MeV) beams. These measurements of beam profiles with CCD-VCFD show good agreement with those with other dosimeters such as utramicro-cylindrical (UC) ionization chamber and radiographic film. The study of the radiation dosimetric technique using CCD-VCFD may provide a fast and accurate pre-treatment verification tool for the small beam used in stereotactic radiosurgery (SRS) and can be used for verification of dose distribution from dynamic multi-leaf collimation system (DMLC).

• 한국산업융합학회 논문집
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• 제20권5호
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• pp.377-383
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• 2017

In this research, the improvement of Korean rice wine (makgeolli) with pine (Pinus koraiensis) extract addition was evaluated due to the increase in alcoholic Korean traditional beverage. Makgeolli fermentation was prepared using Korean rice and nuruk (traditional starter) supplemented by pine needle (MPN) and pine sprout (MPS) extract. The average of initial pH level for MPN was 3.95 and MPS was 4.55, the average of initial sugar content for MPN was 0.4% and MPS was 0.3%. The sugar content and pH level behavior were investigated every 24h during fermentation period. The observation of microbial colony was done at days 8 of fermentation period with three time sample dilution. Afterward, the physical appearance of fermentation solution and microbial development were investigated in the final of fermentation period. The number of yeast and LAB ($402{\times}103\;CFU/mL$) in MPN was greater than the yeast and LAB count in MPS ($224{\times}103\;CFU/mL$). The pH level obtained by addition pine sprout have value of R2 higher than addition of pine needles (leaf), the sugar content (%) behaviour was opposite with pH level behaviour.

• 한국산업융합학회 논문집
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• 제20권5호
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• pp.351-357
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• 2017

Growing plant in potting media without soil is known as Soilless cultivation. This method is used mostly in greenhouse cultivation to increase horticultural commodities production. Peat moss is commonly utilized as potting media substrate because of its characteristic. However, peat moss price is high because of the quantity of peat moss in nature has been decreased. Recently, most of the research is conducted to find the alternative growing medium to cultivate horticulture plant in potting media. Perlite and rice husk ash were mentioned that had a potent as alternative growing media for seasonal plants to increase agriculture production due to the lack of production area. This study aimed to determine the effect of using different substrate and growth performance of chili. The method used was the soilless cultivation. The chili was planted in the pot with perlite media, rice husk ash media, and peat moss media. The chili was measured after 65 days after planting. The result showed that rice husk ash and perlite were more potentials in chili growth performance than peat moss. Rice husk ash had the significant result of plant height. While, Perlite effect on root length, plant weight, leaf length, and stem diameter. The best alternative for cultivation chili without substrate based on this research was perlite then rice husk ash and peat moss.

• 대한기계학회논문집
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• 제14권1호
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• pp.13-22
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• 1990

본 연구에서는 일반적인 셸 요소에 대해 von Mises의 항복조건에 입각한 탄소 성 구성방정식과 total Lagrangian식을 바탕으로한 비선형 해석이론에 Lagrange Mult- iplier식을 이용한 구속조건(constraints)을 도입하여, 중첩된 비선형 구조물이 갖고 있는 제반 비선형성을 고려할 수 있도록 수식화하였으며, 이를 엄밀해를 구할 수 있는 두개의 외팔보가 중첩된 경우에 적용하여 엄밀해와 비교하였으며, 또한 실제적으로 국 산 핵연료 집합체에 사용되는 각 홀드다운 스프링 집합체에 대한 특성 해석을 수행하 여 그 결과를 실험치와 비교하여 그 비교치가 근사함을 보임으로써 본 방법의 신뢰성 과 효용성을 보였다.

• Journal of Crop Science and Biotechnology
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• 제11권1호
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• pp.75-82
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• 2008

Functional stay-green is a beneficial trait that may increase grain yield through the sustained photosynthetic competence during monocarpic senescence in cereal crops. The temporal changes of photosynthesis and related characteristics throughout the grain filling period of a stay-green japonica rice "SNU-SG1" was compared in growth chamber conditions with three high-yielding cultivars(HYVs) and their $F_1$ hybrids with SNU-SG1. SNU-SG1 exhibited a typical characteristic of functional stay-green in terms of chlorophyll degradation and photosynthetic competence during grain filling. According to the photosynthesis-light response curve measured at 10 and 35 d after heading for the flag leaf, SNU-SG1 exhibited higher initial light conversion efficiency and thus higher gross photosynthetic rate at light saturation compared to HYVs. Light saturation point was not different among genotypes, ranging from 1000 to 1500 ${\mu}mol$ photon $m^{-2}s^{-1}$. Net photosynthetic rate at light saturation($P_{max}$) of the upper four leaves in SNU-SG1 was much higher and sustained longer throughout grain-filling than HYVs and $F_1$ hybrids. The sustained high photosynthetic competence of SNU-SG1 during grain filling was ascribed to the longer maintenance of high mesophyll conductance that resulted from not only high chlorophyll content and its delayed degradation but also the slow degeneration of photosystem II(PS II) as judged by chlorophyll fluorescence($F_v/F_m$) of flag leaves. $F_1$ hybrids showed slow degeneration of photosystem II similar to the male parent SNU-SG1 while chlorophyll degradation pattern close to female parents, thus exhibiting a little higher $P_{max}$ than female parents. These results suggest that SNU-SG1 has a typical functional stay-green trait that can be utilized for increasing rice yield potential through the improved dry matter production during grain filling.

• Applied Biological Chemistry
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• 제22권1호
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• pp.39-41
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• 1979

우리나라 재래종(在來種)갓의 anthocyanin 색소(色素)의 구명(究明)을 위(爲)한 실험(實驗)에서 제일보(第一報)의 구조추정(構造推定)에 이어서 이들 색소(色素)의 함량(含量)을 측정(測定)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 채취시기(採取時刻)의 구별(區別)에 의한 전(全) anthocyanin의 함량(含量)은 peonidin-3-glucoside로 표시(表示)하여 봄갓이 175.5mg% 가을갓이 192.7mg%로 가을갓이 약간(若干) 더 많은 함량(含量)을 보였다. 2, 착색정도(着色程度)의 구별(區別)에 의한 전(全) anthocyanin의 함량(含量)은 peonidin-3-glucoside로 표시(表示)하여 잎의 양면착색(兩面着色)갓이 290.2mg%, 한면(面)만의 착색(着色)이 73.6mg%, 양면(兩面)모두 무착색(無着色)갓이 40.0mg%이었다. 3. 신선(新鮮)한 갓에서 peonidin-3-glucoside로 표시(表示)하여 40mg%이하의 anthocyanin 함량(含量)으로는 육안(肉眼)으로서는 전혀 갓특유(特有)의 착색(着色)을 감지(感知)할 수 없었다. 4. 갓에 존재(存在)하는 이종(二種)의 anthocyanin의 조성비(組成比)는 채취시기(採取時期)및 착색(着色)의 정도(程度)에 따라서도 거의 일치(一致)하였으며 그 조성(組成)은 peonidin-3-glucoside가 55.3% 그리고 peonidin-3-galactoside가 44.7%이었다.

• 식물분류학회지
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• 제42권1호
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• pp.1-12
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• 2012

본 연구에서는 한국산 갈퀴덩굴속(Galium L.) 18 분류군에 대하여 줄기, 잎, 꽃, 열매 등의 외부형태학적 33개의 형질에 대하여 분계분석을 실시하였다. 외부형태학적 형질을 이용한 분계분석 결과 얻어진 계통도에서 갈퀴덩굴속은 외군과 분리되어 단계통을 형성하였으며, 크게 2개의 그룹으로 구별되었다. Sect. Cymogaliae과 Sect. Leptogalium의 분류군들은 다계통군으로 확인되었으며, 나머지 절은 단계통으로 확인되었다. 한국산 갈퀴덩굴속의 속내 분류에서는 줄기의 형태와 화피편의 수, 윤생엽의 수 등은 절을 구별하는데 유용한 형질로 인식되었다. 특히, 화피편 정단이 굽어지거나 편평한 형태는 속내 절 분류에 중요한 형질로 인식되었다. 또한, 절내 분류군간의 구별에는 줄기의 털의 형태, 잎의 형태, 화피편의 색, 화서, 엽두의 모양, 열매 표피면의 털의 형태 등이 유용한 식별형질이었다. 기존의 분류 동정에 이용되었던 종자표면의 털의 형태는 속내 분류에 중요한 인식 형질이였으며 특히, 윤생엽의 수, 잎의 형태는 종 분류에 중요한 것으로 나타났다. 본 연구에서 측정한 33개의 형태 형질 중 31개의 형질은 한국산 갈퀴덩굴속 식물의 유연관계를 파악하고 절(section) 분류 및 종 분류에 유용한 것으로 확인되었다.

• 한국의류산업학회지
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• 제13권6호
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• pp.838-847
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• 2011

The object of this study is as follows. First, according to the silhouette of clothes, I will search the relationship with the embroidery design. Second, I will investigate the relation of coloration about the clothes color and embroidery color. Third, I will search the relation with the image in clothes and embroidery design characteristic. The data acquisition is selected to the total 447 pictures of embroidery clothing design from the www.style.com, www.samsungdesign.net which are the related information site. The data are limited from S/S season in 2004 till F/W season in 2008 in the Paris, Milano, and New York collection. The analytical method was made through the analyze method and statistical method. First, on the relation with the clothes silhouette and embroidery design, if the satin stitch technique is utilized as the X-shaped or A-line silhouette in the one-piece and dress, the image which is elegant and feminine can be expressed. if the satin stitch technique is utilized as the H-line silhouette in jacket and court, the mannish image can be expressed. Second, the embroidery color showed up as the contrast combination of the monotone when the clothes color was the monochrome. And the embroidery color showed up as the tone in which is bright and sober when clothes color had 2 or 3 or 4. So, if the embroidery color is utilized as the similar color scheme, it will be effective. Third, if the embroidery technique of the one-piece and dress is utilized as the the satin stitch technique and the bloom and leaf motive being stylized pattern is used in the all-over and border pattern, It will be effective to express the romantic/feminine, ethnic/folklore, active, and classic image.

• 한국식품조리과학회지
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• 제20권3호
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• pp.310-316
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• 2004

본 연구는 소비자들이 잘 알고 있고 널리 섭취하고 있는 산채류 중 취나물의 일종인 참취의 이용가치를 높이기 위해 실시하였다. 품질특성을 알아보기 위하여 섬유소, 탄닌, 무기질, 색도, texture를 측정하였다 참취에는 섬유소가 0.68g/100g 함유되어 있었고, 수렴작용을 갖는 탄닌은 35.6ppm/g 함유 되어있는 것으로 나타났다. 무기질 함량을 측정한 결과 Fe가 많이 함유되어 있어 참취에서 290.98mg/kg으로 나타났다. 또한 고부가 식품이용화 가치를 판단하기 위해서 참취를 생잎, 나물과 샐러드로 제조해서 관능검사를 시행한 결과 참취 나물에 대한 전반적인 선호도가 다른 군에 비해 높게 나타났으며, 20대보다는 30대, 40대 이상에서 전체적인 선호도가 높게 나타났다. 참취 곰취 추출물을 이용하여 현대인의 건강증진에 이바지할 수 있는 음료를 개발하였다. 참취ㆍ곰취 음료의 제조조건 확립을 위하여 관능검사를 통해 recipe를 결정하였다. 결정된 recipe로 음료를 제조한 후 유통기한 설정을 위해 가용성 고형물, optical density, pH, 적정산도 및 미생물 등의 품질분석을 실시하여 유통기한을 18개월로 정하였다.

• Asian Journal of Atmospheric Environment
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• 제6권4호
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• pp.275-280
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• 2012

To understand the effect of aerosols on the growth and physiological conditions of trees in forests, it is important to know the state of aerosols that are deposited on the surface of the leaves or needles. In this study, we developed methods of visualization of submicron-sized aerosols that were artificially deposited from the gas-phase or liquid phase onto tree leaves or needles in trees. Firstly, we used field-emission scanning electron microscopy (FE-SEM) to observe black carbon (BC) particles that were artificially sprayed onto the leaves or needles. The distribution of BC particles deposited on the leaves and needles were distinguished based on the size and morphological features of the particles. The distribution and agglomerates size of BC particles differed between two spraying methods of BC particles employed. Secondly, we tried to visualize gold (Au) particles that were artificially sprayed onto the leaves using energy dispersive X-ray spectrometry (EDX) coupled to FE-SEM. We detected the Au particles based on the characteristic X-ray spectrum, which was secondarily generated from the Au particles. In contrast to the case of BC particles, the Au particles did not form agglomerates and were uniformly distributed on the leaf surfaces. The present results show that our methods provide useful information of adsorption and/or behavior of fine particles at the submicron level on the surface of the leaves.