• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.8
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• pp.277-286
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• 2020

This study aimed to examine bone health awareness and knowledge and the bone mass-improving behaviors of female nursing college students. The subjects were 172 nursing students attending nursing colleges. The data were collected from March 16 to April 4, 2020, by using bone health awareness, bone health knowledge, and bone mass-promoting behavior assessment tools. Descriptive statistics are presented, and t-tests, ANOVA, Pearson's correlation, and multi-regressions were used for data analysis. Students' bone health awareness was 1.79, bone health knowledge was 8.86, and bone mass-promoting behavior level was 2.78. There were significant negative correlations between bone mass-promoting behavior level and age of menarche (r = 0.21, p = .004) and sun exposure (r = 0.44, p < .000). Also, bone mass-promoting behavior level and knowledge of bone health were negatively correlated (r = 0.21, p = .005). Regression analysis showed that knowledge of bone health (β = 0.21, p = .005), age of menarche (β = 0.20, p = .005), and sun exposure (β = 0.38, p < .000) were significant predictors of bone mass-promoting behaviors and their variance explanation power was 20.6%. Based on these results, education to improve knowledge of bone health will help to improve bone health and increase bone mass-promoting behaviors among young women.

• Korean Journal of Agricultural Science
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• v.22 no.1
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• pp.103-109
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• 1995

The model foods were prepared by simulating mositure, protein and starch, and they were heated for 30 mins, at $80^{\circ}C$ and then cooled at $25^{\circ}C$ in water bath. Their rheological properties were investigated by the use of Brookfield wide-gap rotational viscometer at $30{\sim}60^{\circ}C$, and the rotation speed ranged from 0.6 to 6 rpm and solid content ranged from 8% to 11%, the results obtained were as follows. 1. All the model foods ($P_1S_3$, $P_2S_2$, $P_1S_1$, $P_2S_1$, $P_3S_1$, $P_4S_0$) exhibited pseudoplastic behaviors with yeild stress and were thixotropic foods which showed time - dependent structural decays, but the starch food of 8 ~ 11 % solid content did not show the flow behavior. 2. The correlation between the rheological parameters and the protein content of model foods in various moisture content did not appeared a constant relationship. 3. The change of shear stress against shear rate in high starch foods was larger than that in high protein foods and the structure at initial shear time was decayed with a quatic equation according to the Tiu's Model and structural decay was in parallel with the increase of shear rate. 4. The temperature dependency of the apparent viscosity of $P_1S_2$, and $P_2S_1$ was fully expressed by Arrhenius equation and activation energies of their food were 2.35 and $1.34Kcal/g{\cdot}mol$, respectively.

• Computational Structural Engineering
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• v.10 no.4
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• pp.217-228
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• 1997

The high precision analysis by the p-version of the finite element method are fairly well established as highly efficient method for linear elastic problems, especially in the presence of stress singularity. It has been noted that the merits of the p-version are accuracy, modeling simplicity, robustness, and savings in user's and CPU time. However, little has been done to exploit their benefits in elasto-plastic analysis. In this paper, the p-version finite element model is proposed for the materially nonlinear analysis that is based on the incremental theory of plasticity using the constitutive equation for work-hardening materials, and the associated flow rule. To obtain the solution of nonlinear equation, the Newton-Raphson method and initial stiffness method, etc are used. Several numerical examples are tested with the help of the square plates with cutout, the thick-walled cylinder under internal pressure, and the circular plate with uniformly distributed load. Those results are compared with the theoretical solutions and the numerical solutions of ADINA

• Reproductive and Developmental Biology
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• v.29 no.1
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• pp.43-48
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• 2005

To search of a new porcine pheromonal odorants for biostimulation control system technologies to offer a potentially useful and practical way to improve reproductive efficiency in livestock species, the holographic quantitative structure activity relationship (HQSAR) model between odorants, 2-phenoxytetrahydrofurane (A), 2-cyclohexyl-oxytetrahydrofurane (B), derivatives and binding affinity constants (p[Od.]/sub 50/) for porcine odorant-binding protein (pOBP) as receptor of pig pheromones were derivated and disscused. The binding affinity constants of cyclohexyl substituents (A) for pOBP were higher (A>B) than that of phenyl substituents (B). It was revealed that the optimum HQSAR model XI using PLS analyses had a fragment length (5∼8) with chirality at 5 components and hologram length 97 bin, which had a cross-validated q²(predictablities) of 0.916, and a conventional correlation coefficient r² (fitness) of 0.988, respectively. From the atomic contribution, the C3 and C5 atom in 2-oxyfuryl group contributed to binding affinity constants, whereas the central carbon atom in tert-butyl group on the cyclohexyl ring and the C4 atom of furyl group parts showed no contribution.

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.4
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• pp.612-617
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• 2014

Anti-inflammatory effects of turmeric (Curcuma longa L.) rich in polysaccharides, as well as free of curcuminoids and turmerones were investigated in acute and chronic inflammatory models. Activity against the acute phase of inflammation was evaluated in carrageenan-induced paw edema and xylene-induced ear edema models. The results showed that turmeric extract significantly decreased paw edema volume in the first and third hours after carrageenan injection ($P{\leq}0.05$). Turmeric extract at all dose levels also significantly inhibited xylene-induced ear edema formation ($P{\leq}0.05$). Activity against chronic inflammation was also evaluated in cotton pellet-induced granuloma model. Turmeric extract significantly ($P{\leq}0.05$) decreased the weight of granuloma tissue on cotton pellets in a dose-dependent manner when compared to the vehicle control. Thus, the findings of the study suggest that turmeric extract in effective against both acute and chronic inflammation.

• Korean Journal of Soil Science and Fertilizer
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• v.36 no.4
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• pp.210-217
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• 2003

An alternative method to the empirical approach such as Langmuir and Freundlich model, surface complexation model using thermodynamic database is used to simulate adsorption behavior of cadmium for oxide minerals. Sorption of cadmium onto amorphous silica ($SiO_2$) and synthetic goethite (${\alpha}$-FeOOH) at various conditions of pH, initial cadmium loading, oxide concentration, and ionic strength, were investigated. For both oxide minerals, increasing cadmium concentration resulted in right shifting of the sorption curve of cadmium as the function of pH. The $pH_{50}$, where 50% of cadmium sorbed, of goethite (pH 5.25) was much smaller than that of the silica (pH 7.83). The sorption of cadmium onto both minerals were not affected by the background ion strength from $10^{-1}$ to $10^{-2}$ M of $KNO_3$. It indicated that the binding affinity of goethite surface for cadmium is much stronger than that of silica. The strong affinity of oxide mineral for cadmium can be explained by the existence of coordination or covalent bond between cadmium and surface of it.

• Textile Coloration and Finishing
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• v.4 no.2
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• pp.84-88
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• 1992

셀룰로오스 펄프에 폴리비닐알코올의 블랜드, 가교, 및 카복시메칠화한 아니온성 셀룰로오스계 고분자 흡착제에 대한 모델 카치온 염료, C.I. Basic Red 18의 흡착 및 탈색 성능을 수용액계(pH 4.2)에서 검토하였다. 아니온성 셀룰로오스 고분자 흡착제의 카치온 모델 염료의 흡착등온성은 저농도 영역에서 Sigmoidal 형을 나타내었고 Donnan 흡착 모델 기구로 해석하였다. 하전기 도입에 따라 염료의 흡착능은 증가하였으며 이 흡착능력은 Sodium이온의 첨가에 의하여 저하하였다. 또 아니온 셀룰로오스계 흡착제에 의한 모델 염료의 배수 탈색율은 크게 증가하였으며 입상활성탄보다 우수한 탈색능력을 나타내었다.

• Electronics and Telecommunications Trends
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• v.8 no.4
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• pp.1-12
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• 1993

ATM 망 기술의 발전으로 BISDN 서비스를 공중망에서 제공하게 되면 LAN 의 충분한 보급으로 BISN 을 통한 LAN 간 연결은 첫번째 응용이 될 것이다. 본 고에서는 ATM 망과 LAN 사이에 연동할 IWU에서 고려해야 하는 문제점을 조사하고 이에 대한 해결 방안을 제시한다. 3 개의 연결형-비연결형 모델을 세워 비교 분석한 후 BISDN(Brodband Integrated Services Digital network)에서 비연결형 서비스 모델을 선정한다.이 모델은 BISDN에서 비연결형 서비스를 제공하는 것으로 Direct 방법과 Indirect 방법, AAL(ATM Adaptation Layer) 3/4와 AAL5 등을 비교 분석함으로써 OSI 에 따른 IWU 모델을 제안한다.

• KSBB Journal
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• v.15 no.3
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• pp.299-306
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• 2000

Concern for the effects of toxic chemicals on the environment leads the search for better bioassay test organisms and test procedures. Photobacterium phosphoreum was used successfully as a test organism and the luminometer detection technique was an effective and simple method for determining the concentration of toxic chemicals. With EC50 a total of 14 chlorine substituted phenols benzenes and ethanes were used for the experiments. The test results showed that the toxicity to P. phosphoreum increased in the order of phenol > benzene > ethane and the toxicity also increased with the number of chlorine substitution. Quantitative structure activity relationship (QSARO) model can be used to predict EC50 to save time and endeavor. Correlation was well established with the QSAR parameters such as log P, log S and solvatochromic parameter(Vi/100 $\pi$, ${\beta}$m and am). The QSAR modeling was used with multi-regression analysis and mono-regression analysis. These analyses resulted in the following QSAR : $log EC_{50} =2.48 + 0.914 log S(n=9 R2=85.5% RE=0.378) log EC_{50}=0.35 - 4.48 Vi/100 + 2.84 \pi^* +9.46{\beta}m-4.48am (n =14 R2=98.2% RE=0.012) log EC_{50} =2.64 -1.66 log P(n=5, R2=98.8% RE=0.16) log EC_{50}=3.44 -1.09 log P(n=9 R2= 80.8% Re=0.207)$

• The Journal of the Convergence on Culture Technology
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• v.7 no.3
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• pp.343-351
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• 2021

The purpose of this study was to identify the nursing students' COVID-19 vaccination intention based on health belief model. A total of 169 nursing students who were freshman to senior grade from one college participated in this study. An online self-administered questionnaire was used for data collection from April 5 to 16, 2021 and data were analyzed using the SPSS/Window 21.0 program. Multiple regression analysis conducted to verify the factors on COVID-19 vaccination intention. The significant influential factors for COVID-19 vaccination intention were self-efficacy(β=.345, p<.001), cues to action(β=.307, p<.001), perceived benefits(β =.143, p= .034), and knowledge(β=.116, p=.042). The model explained 50.8% of the variance in the COVID-19 vaccination intention. This result points to the importance of fostering nursing student's self-efficacy, cues to action, perceived benefits, and knowledge to promote COVID-19 vaccination uptake.