• 한국식품과학회지
• /
• 제33권2호
• /
• pp.184-189
• /
• 2001

팥과 녹두의 가해해충 살충을 위한 감마선과 methyl bromide(MeBr) 훈증 처리가 두류의 수침 시 용출 성분에 미치는 영향을 비교 검토하였다. 팥과 녹두를 $20^{\circ}C$에서 16시간 침지시킨 후 용출액의 성분을 분석한 결과, 고형분과 환원당 함량은 감마선 조사선량에 따라 증가하였는데 녹두에 비해 팥이 두드러졌다. 그리하여 5 kGy 이상 조사구에서는 유의적으로 증가하였으나 살충선량인 2.5 kGy 범위에서는 변화가 크지 않았다. MeBr 처리된 팥의 고형분 함량은 7.5 kGy 조사구와 유사한 수준의 변화를 보였으나 전반적으로 대조구와 거의 유사한 함량을 보였다. 용출액의 pH는 처리구에 따라 일정한 변화를 보이지 않았다. 용출액의 색도는 감마선 조사선량의 증가에 따라 두 시료에서 명도(L)의 감소와 적색도(a) 및 황색도(b)의 증가현상이 점차 나타났으며, 훈증처리 시료에서는 이 같은 현상이 매우 심하여 전반적 색차(${\Delta}E$)가 팥은 10 kGy, 녹두는 30 kGy 이상 조사된 시료와 유사한 값을 보였다. 수침에 따른 유리아미노산의 용출은 팥의 경우 asparagine, glutamic acid, alanine, valine 등이, 녹두의 경우asparagine, glutamic acid, proline, valine 등이 용출 비율이 높았으며, 조사선량이 증가함에 따라 총 유리아미노산의 용출 함량은 높게 나타났다. 그러나 MeBr 훈증 처리구의 유리아미노산 함량은 대조구보다 낮은 값을 보였다. 팥과 녹두 용출액의 고형분과 환원당 함량은 감마선 조사선량과 매우 높은 정의 상관관계를 보여주었다.

• 천문학회지
• /
• 제53권1호
• /
• pp.9-26
• /
• 2020

At q = 1.81 ± 0.20 × 10^-5, KMT-2018-BLG-0029Lb has the lowest planet-host mass ratio q of any microlensing planet to date by more than a factor of two. Hence, it is the first planet that probes below the apparent "pile-up" at q = 5-10 ×10^-5. The event was observed by Spitzer, yielding a microlens-parallax π_E measurement. Combined with a measurement of the Einstein radius θ_E from finite-source effects during the caustic crossings, these measurements imply masses of the host M_host = 1.14^+0.10_-0.12 M_⊙ and planet M_planet = 7.59^+0.75_-0.69 M_⊕, system distance D_L = 3.38^+0.22_-0.26 kpc and projected separation a_⊥ = 4.27^+0.21_-0.23 AU. The blended light, which is substantially brighter than the microlensed source, is plausibly due to the lens and could be observed at high resolution immediately.

• 한국식품영양과학회지
• /
• 제44권11호
• /
• pp.1759-1762
• /
• 2015

시판 막걸리에서 분리한 균주(Lactobacillus paracasei ssp. paracasei M13-65-3)로 타락을 제조하였다. M13-65-3균주를 이용하여 제조한 타락 추출물에 의하여 T lymphocyte인 Jurkat 세포의 증식이 촉진되었고 피부세포의 멜라닌 생성이 억제되었다. 본 연구의 결과는 타락이 면역 증강 기능성과 피부색소 조절 기능성을 보유할 가능성을 제시하고 있다.

• 한국식품과학회지
• /
• 제49권1호
• /
• pp.28-34
• /
• 2017

본 연구를 통하여 P. aeruginosa PR3를 이용하여 DOD를 생산하기 위해 저가의 기질로서 필리핀 너트유가 효과적으로 사용될 수 있음을 확인하였으며 배지에 첨가되는 여러 영양인자들의 영향을 조사하여 DOD 생산성을 크게 향상시킬 가능성이 있음도 확인하였다. 따라서 DOD 생산에 이용되는 올레산을 식물성오일로부터 별도의 생산과정을 거쳐 생산하지 않고 식물성오일자체를 직접 기질로 사용함으로서 PR3 균주를 이용하여 고부가가치의 DOD를 효율적으로 생산할 수 있다는 것을 확인하였다.

• 한국수산과학회지
• /
• 제38권1호
• /
• pp.20-28
• /
• 2005

Species composition and seasonal variation of decapod crustacean assemblage in Hampyeong Bay, Korea were examined. Sampling was monthly made by a shrimp trawl between March 2003 to February 2004. A total of 39 species of 20 families were collected. Of these, Latreutes planirostris, Palaemon gravieri, Parapenaeopsis tenella, Exopalaemon carinicauda, Charybdis japonica, Trachysalambria curvirostris and Palaemon macrodactylus were dominant species comprising $84.3\%$ of the total number of individuals. Charybdis japonica, P. gravieri, Oratosquilla oratoria, E. carinicauda, T curvirostris, Metapenaeus joyneri and P. tenella represented $90.6\%$ of the total biomass. While total abundance (number of individuals) was high in spring, total biomass and species richness (number of species) and diversity were high in summer. Cluster analysis, based on monthly abundance data of the 14 most common species, showed that the species were separated into three different groups. Group A composed of Leptochela gracilis, Alpheus japonicus, Crangon uritai, P. macrodactylus, E. carinicauda, P. gravieri, O. oratoria, C. japonica, which were year round residents, group B M. joyneri, T. curvirostris and P. tenella, which were abundant in summer, and group C Crangon hakodatei, Latreutes anoplonyx and L. planirostris, which were abundant in winter. Principal component analysis revealed that seasonal variation in the decapod crustacean assemblage was attributed to the abundance of temporal species such as penaeid shrimps, which were abundant in summer, due to seasonal variation of water temperature and reproductive pattern.

• 산업경영시스템학회지
• /
• 제28권2호
• /
• pp.109-116
• /
• 2005

In the previous C/S publishing system, the editor or contributor can arbitrarily modify the document created by the author, in which case it is difficult to identify the changes made in the document. Another shortcoming is in that when the document is in need of tracking or editing, the client must have the respective editing system. To solve this problem, the gist of the document must be preserved along with the document itself, and the process of handling the document must be standardized. Publishing on the web ensures a more stable and accurate result in processing documents. The significance of web publishing is made clear, when we consider the importance of information per se and the growing demand for immediate publication in the present day. The need for a simple and straightforward apache-based PDF publishing system, in which HTML and CSS are supported, and a converting engine provides PDF standard security application support, is prominent. This provides a library in which one can directly create a PDF via Windows, Linux, or Unix without having to rely on a client, allowing high-speed PDF creation. The development of a web-accessed PDF converting engine forms the basis for e-transactions, online brochures, electronic B/L, and many other industrial sectors.

• 천문학회지
• /
• 제33권1호
• /
• pp.37-45
• /
• 2000

We have investigated the properties of the high-latitude cloud MBM 7 using the 3 mm transitions of CO, CS, HCN, $HCO^+,\;C_3H_2,\;N_2H^+$, and SiO. The molecular component of MBM 7 shows a very clumpy structure with a size of $\le$0.5 pc, elongated along the northwest-southeast direction, perpendicularly to an extended HI component, which could be resulted from shock formation. We have derived physical properties for two molecular cores in the central region. Their sizes are 0.1-0.3 pc and masses 1-2 M$\bigodot$ having an average volume density $\~2{\times}10^3 cm^{-3}$ at the peak of molecular emission. We have tested the stability of the cores using the full version of the virial theorem and found that the cores are stabilized with ambient medium, and they are expected not to be dissipated easily without external perturbations. Therefore MBM 7 does not seem to be a site for new star formation. The molecular abundances in the densest core appear to be much less (by about one order of magnitude) than the 'general' dark cloud values. If the depletions of heavy elements are not significant in the HLCs compared with those in typical dark clouds, our results may suggest different chemical evolutionary stages or different chemical environments of the HLCs compared with dense dark clouds in the Galactic plane.

• 한국가구학회지
• /
• 제22권3호
• /
• pp.199-207
• /
• 2011

Examined the color of ten species of Korean broadleaf trees were experimented based on $L^*a^*b^*$ values and color difference (${\Delta}E^*ab$) between sapwood and heartwood, in order to analyze and determine the color, a critical visual and decorative factor of the broadleaf trees that can be used for making woodcraft and furniture. According to the result, the entire sapwood and heartwood, except the heartwood of Populus tomentiglandulosa, showed positive value in whiteness, redness, and yellowness and therefore contained yellow and red. None of the species showed color difference between sapwood and heartwood that was trace (0~0.5), slight (0.6~1.5), or very much; whereas Populus maximowiczii showed noticeable color difference (1.5~3.0); Salix koreensis, Betula platyphylla var japonica, Carpinus laxiflora, and Castanea crenata, appreciable and Populus tomentiglandulosa, Juglans mandshurica, Betula schmidtii, Alnus japonica, and Quercus variabilis, much. The color characteristics of heartwood and sapwood of the ten Korean broadleaf tree species studied in this research can be used as basic data for woodcraft or furniture production, especially when replacing foreign woods with Korean ones, and also contribute to convergence researches for science, engineering, and design fields.

• 산업경영시스템학회지
• /
• 제31권2호
• /
• pp.112-121
• /
• 2008

Nowaday the supply chain competitiveness is emphasized more and more than a company's own competitiveness. One of the most important processes in import and export is a publication over the Bill of Loading. In the publication of those bills S/R(shipping request) and check B/L for reviewing are circulated among consignors, forwarders, shipping companies and airlines by fax and e-mail. Or there should be expensive a One to One system, like an EDI. Each party has to re-input S/R data to their own systems and check it several times. The S/R data are converted digital to analog type and analog to digital repeatedly to check in the process. As the process goes by there can be not only input data errors but also waste of time and cost. ECR(electronic character recognition) is a technology can solve the Problem. Considering the data structure of documents in many systems used ECR samples SIR data from documents written in the digital type. But it is not enough with it only. To make N to N composition in reality more efficient we make a documents hub on the web reengineering the existing process to One to One relation. The ECR documents hub system has given us beneficial effects over a year throughout a field test.

• 대한조선학회지
• /
• 제12권2호
• /
• pp.43-58
• /
• 1975

There are many reports on fatigue crack of metallic materials but most of them relate crack propagation rate to stress intensity factor. The problem of crack propagation is not yet clarified, especially the bridge between micro and macro phenomena In this experiment rotating bending fatigue tests have been carried out with smoothed specimen of rolled steel plates including 0.2% carbon under application of three stress conditions to investigate the slip band and the crack propagation behaviour. The results obtained are as follows; 1) The length of cracks which have grown at initial crack tips can be expressed as follows; $l=Ae^{BNr}$(A,B: constant, $N_r$: cycle ratio) $\frac{dl}{dN}=\frac{AB}{N_f}{\cdot}e^{BNr}$($N_f$:fatigue life) 2) The ratio of slipped grain number to total grain number is $S_f=7{\sigma}-5.6$-5.6{\sigma}_c$($\sigma$: stress amplitude) (${\sigma}_c$: fatigue limit) 3) When the fatigue process transfers from Stage I to Stage II, the crack which propagates into specimen changes its direction from that of the maximum shear stress to the direction of perpendicular to principal stress and this is same in the circumferential direction of specimen. the crack propagation behaviors of both sides of a crack are different each other when they approach to the grain boundary.