• 펄프종이기술
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• 제45권5호
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• pp.44-48
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• 2013

Ultrasonic treatment of KOCC was tried to explore the possibility for improvement of KOCC quality as a raw material for making industrial packaging paper and paperboard. The effect of pH, stock consistencies and treatment times on the ultrasonic response of KOCC were investigated. WRV, apparent density, tensile index and burst index were improved as pH of KOCC slurry is increased. However highest tear index and stiffness were obtained at pH 8. It was also found that the highest WRV and strength properties could be obtained at 0.5% of KOCC consistency during ultrasonic treatment. WRV and most strength properties were improved with ultrasonic treatment time. It was found that ultrasonic treatment can be used as a useful mean for KOCC modificaton.

• Journal of Astronomy and Space Sciences
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• 제15권1호
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• pp.53-58
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• 1998

The $H{\beta}$ and some metal line indices, such as Mg2, Fe52 of single-age and single-metallicity populations are computed based on the method of evolutionary population synthesis, with careful consideration of the variation of the horizontal-branch morphology with metallicity and age. We find (a) that while metal lines are little af-fected, the $H{\beta}$ index is severely enhanced (up to 30%)by the presence of the blue horizontal-branch stars, frustrating the current age-estimations from this index with out careful consideration of these stars, and (b) that there is a systematic trend in the sense that the globular clusters in giant elliptical galaxies appear to be older than those in our Galaxy by several billion years. We also calculate these indices for the stellar populations with a metallicity spread, by adopting metallicity distribution functions predicted by chemical evolution models. The comparison of the models with the observed indices of the central regions of the early-type galaxies yields the results (a) that the ages of the giant elliptical galaxies would be older than the previous estimations by several billion years, and (b) that there is a considerable age spread among elliptical galaxies, in the sense that the giant elliptical galaxies are older than small ones.

• Advances in Traditional Medicine
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• 제7권2호
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• pp.205-210
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• 2007

The objectives of the study were (1) To evaluate the safety and tolerability of Damtab. (2) To characterize hypoglycemic effect of Damtab, if any. (3) To evaluate insulin sensitivity effect of Damtab, if any. Hypoglycemic effect of Damtab (700 mg and 1,400 mg) were examined. Gliclazide (80 mg) was used as an active control. Placebo was used as control. Breakfast was given, half an hour before dosing whereas lunch, snacks and dinner were given at 6, 10 and 14 h post dose. An oral glucose tolerance test was conducted to calculate the insulin sensitivity index from the values of glucose and insulin during oral glucose tolerance test. Both giclazide 80 mg and Damtab 1,400 mg significantly lowered plasma glucose level up to 6 h. Insulin sensitivity index of Damtab (1,400 mg) was found to be similar to that of placebo. A significant increase in insulin level at 1 h post dose of Damtab (1,400 mg) was observed. Damtab 700 mg shows placebo like effect whereas Damtab 1,400 mg possesses hypoglycemic effect.

• 대한전자공학회논문지SD
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• 제37권7호
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• pp.29-35
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• 2000

다양한 수소처리 조건에 의하여 수소 처리된 광섬유에 광섬유 격자를 제작하여, 광섬유 코어 내에 포화된 수소분자 농도와 광섬유 격자의 굴절률 변화폭(photoinduced index modulation)과의 관계를 분석하여 보았다. 실험으로 측정된 광섬유 결자의 굴절률 변화폭은 코어 내에 수소분자 농도가 100ppm 증가함에 따라서 ${\sim}2{\times}10^{-5}$만큼 증가하였다. 그리고 광감도현상에 관여하는 전체결함, 즉 GeE' 센터와 GeH결함은 포화된 수소농도 100ppm 당 대략 $3.8{\times}10^{17}/cm^3$ 만큼 많아지는 것으로 추정된다.

• 한국축산식품학회지
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• 제38권6호
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• pp.1273-1285
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• 2018

The aim of this study is to determine the some physicochemical (proximate composition, pH and $a_w$ values) and reconstitution (wettability, dispersibility and solubility index (SI)) properties of spray-dried bone broth powder (BBP) along with the effects of the addition of different carrier agents. Subsequently, the powdered products were stored to determine the storage stability (pH, lipid oxidation, color, browning index) for 3 mon at $-18^{\circ}C$. For this purpose, firstly marrow-containing bones (Os femur and Os humerus) have been boiled to get the bone broth. Three different emulsions were respectively prepared (1) 20% maltodextrin (MD) added BBP, (2) 20% whey powder isolate (WPI) added BBP and (3) 10% MD and 10% WPI added BBP and the emulsions were dried using a spray-dryer with $185^{\circ}C$ inlet and $95^{\circ}C$ outlet temperature. The proximate composition and reconstitution properties of BBP were found statistically different (p<0.05) depending on the use of different carrier agents. MD added BBP showed uniform and smooth morphology. The color, browning index, thiobarbituric acid reactive substances (TBARS) and pH values of BBP significantly changed (p<0.05) during storage. In conclusion, both the results of physicochemical and storage period analyses showed that the most suitable encapsulation material in the production of the bone broth powder is MD.

• 디지털융복합연구
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• 제14권6호
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• pp.157-165
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• 2016

본 연구의 목적은 해운실물경기 지수가 국내 해운선사 주가에 미치는 영향을 분석하는 것이다. 분석에 사용된 변수는 한국 H회사의 주가와 해운실물경기 지수인 BDI(Baltic Dry Index), CCFI(China Containerized Freight Index), HRCI(Howe Robinson Containership Index)다. 분석기간은 2012년부터 2015년이며, 해운선사 주가지수, BDI, CCFI, HRCI의 4년간의 주간 데이터를 활용하였다. VAR 모형을 이용하여 CCFI와 HRCI가 국내해운선사의 주가지수에 미치는 영향을 분석하였고, VECM 모형을이용하여 BDI가 국내해운선사의 주가지수에 미치는 영향을 분석하였다. VAR 모형 분석결과, CCFI, HRCI는 주가지수에 부(-)의 영향을 미치는 것으로 분석되었으며, VECM 모형 분석결과, BDI는 주가지수에 부(-)의 영향을 미치는 것으로 나타났다. 해운실물경기지수에 부의(-) 영향을 받은 국내 해운선사는 해운실물경기지수에 부의(-) 영향을 받은 국내 해운선사는 해운시황에 적절한 대응을 하지 못한 것을 의미한다. 따라서 국내 해운기업은 중장기적인 모니터링을 통해 해운시황에 대처하는 전략이 필요하다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XII)
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• pp.611-614
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• 2003

p-KG03의 고유점도는 65.22 및 50.75 $d{\ell}/g$ 이며, 사슬강도성은 0.170이였고, 특성화 농도는 0.114 g/l이었다. p-KG03은 non-Newtonic fluid로 Power-Low Model에 의한 pseudoplastic한 물성을 갖으며, 유체성으로 p-KG03 1%의 constancy index (K)는 2,172 cp, flow behavior index (n)는 0.52이었다. 특히 pH, 염 및 열에 안정하며 기존 다당류와의 혼합이용 가능성이 있을 것으로 생각된다.

• Toxicological Research
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• 제11권1호
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• pp.127-131
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• 1995

Sequential changes in cell proliferation during the development of epitherial kidney tumors induced in rats were investigated by autoradiographic determination of the $^3H$-thymidine-labeling index. Renal cell tumors were induced in male Sprague-Dawley rats by oral administration of N-nitrosomorpholine at the concentration of 120 mg/l in the drinking water for 7 weeks. At different times between 12 and 34 weeks after withdrawal of the carcinogen (stop model) animals were sacrificed. According to cytological criteria, neoplastic lesions were classified into clear cell, acidophilic cell, basophilic cell and oncocytic tumors. The labeling index was found to be increased in all types of preneoplastic tubules as compared to their corresponding original tubules. A much stronger elevation of cell proliferation was ocurred during the development of renal cell tumors from preneoplastic tubules. Of four tumor types, acidophilic cell tumor showed the highest labeling index while oncocytoma exhibited the lowest proliferative activity. These findings are in good accordance with the clinical observations that acidophilic cell tumors have a worse prognosis than oncocytoma. The data presented in this study suggest that the individual proliferation rates may be an objective biological marker of kidney tumor aggressiveness.

• Environmental Analysis Health and Toxicology
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• 제24권3호
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• pp.231-240
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• 2009

We explored collective behaviors of indicator species to elucidate the effect of the chemical stress. After the treatments of an insecticide, diazinon, at low concentrations (1.0 and 10.0 ${\mu}g/L$), spatial dispersion patterns of Daphnia magna were checked in a test chamber. The I-index was used to characterize the movement data before (0~1 h) and after (1~2 h) the treatments in laboratory conditions. The slopes of the frequency distribution of I-index in semi-log scale decreased significantly, and the test populations appeared to be more dispersed with a lower degree of aggregation after the treatments. The index was feasible in indicating decrease in the ability of the specimens to keep desirable distances with neighbor individuals under chemical stress and showed a possibility of monitoring presence of toxic chemicals in environment through group behavior measurement.

• 한국염색가공학회지
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• 제25권4호
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• pp.241-246
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• 2013

The color properties of a white or nearly colorless fabric are represented by whiteness index (WI) or yellowness index (YI). These two indexes relate to a white fabric's color quality. The purpose of this study was to identify the properties of WI and YI on the CIELAB through the simulations of estimation data for a systemization of color quality control. The results indicated that the relationship between WI and YI was a negative correlation, however the coefficients of correlation function between WI and YI were depended on hue. There were two hue transition points of the rate of changes in WI and YI. These hue transition points were the reference points to divide the hue contribution to WI and YI. These points were not the point of h=0 and h=180 and asymmetric. In addition, where the colors were same distance from the white point on the CIELAB, the rate of changes in WI and YI by ${\Delta}$Ew were depending on hue. Specifically, when WI decreased, YI of reddish and yellowish tinted colors decreased more than bluish tinted colors.