• Journal of Fisheries and Marine Sciences Education
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• v.28 no.3
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• pp.667-677
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• 2016

Nursing students are exposed to a variety of stressors. The purpose of this study was to identify the factors influencing nursing students' college adjustment related to calling, work values and adaptation resources. The survey conducted in three nursing colleges (n=313) from 18th November to 30th December in 2015. The data were analyzed with descriptive statistics, independent t-tests, Pearson's correlation coefficient and multiple regression analyses using SPSS/Win 21 software. 41.9% of variance in college adjustment was accounted for by purpose/meaningfulness(t=6.871, p<.001), emotional stability(t=6.224, p<.001), altruism (t=2.708, p=.007), school year(4th)(t=3.073, p=.002), Hospitals in affiliation(t=2.822, p=.005), GPA(t=2.558, p=.011). The model was statistically significant explaining 41.9% of the variance(F=17.843, p<.001). This study suggests that a strategy increasing college adjustment for nursing students, is needed to consider purpose/meaningfulness, emotional stability, altruism.

• Journal of Animal Science and Technology
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• v.62 no.4
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• pp.475-484
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• 2020

This study was conducted to evaluate the effect of the thickness of corn flakes produced by pressurized steam chamber (PSC) on rumen fermentation characteristics and nutrient degradability in Hanwoo and Holstein cows. Corn flakes were treated by PSC, in three groups based on corn flake thickness: < 2.5 mm (T1), 2.5-3.0 mm (T2), and > 3.0 mm (T3). Corn flake thickness significantly influenced pH (p < 0.01) and propionate concentration (p < 0.05) and slightly but not significantly influenced acetate, butyrate, and total-volatile fatty acids (T-VFA) concentrations. The dry matter (DM) degradability increased significantly with a reduction in corn flake thickness (p < 0.01), being significantly greater in T1 and T2 than T3 groups (p < 0.01) and similar between T1 and T2 groups throughout whole incubation time. Also, starch degradability was the lowest in T3 groups than others (p < 0.01). Thus, the present results showed that considering the production efficiency and economic feasibility, the optimal thickness of corn flakes produced in a PSC is recommended to be 2.5-3.0 mm.

• Journal of the Korean Chemical Society
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• v.39 no.5
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• pp.384-392
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• 1995

Steady-state sublimation vapour pressures of anhydrous bismuth trichloride have been measured by the continuous gravimetric Knudsen effusion method from 370.6 to 488.8 K. Additional effusion measurements have also been made from 438.2 to 495.7 K by the torsion effusion method. Based on a correlation of ${\Delta}_H0298$.15 and ${\Delta}_H0298$.15, a recommended p(T) equation has been obtained for BiCl3(s); log(p/Pa)=－C/(T/K)－2.838log(T/K)－8.097${\times}$10-2(K/T)2＋22.588, where p is in Pa, T in Kelvin and ${\Delta}_H0298$.15 in kJmo1-1 and C=(${\Delta}_H0298$.15＋5.9988)/1.9146${\times}$10-2. Condensation coefficients and their temperature dependence have been derived from the effusion measurements.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.131-140
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• 2018

This study is a descriptive research study for analyzing the relevance among stress, anxiety, and ego-resilience in nursing college students before clinical practice. The survey was conducted targeting the second-year students in a K college who were anticipating their first clinical practice. The survey result showed that female students showed higher stress levels than male students (t=-5.51, p<.001) before clinical practice. Female students also showed higher anxiety levels than male students (t=-3.30, p=.001) before clinical practice. The students showed higher anxiety levels before clinical practice as they felt more strongly that they were in bad health (F=3.27, p=.041), as their personality was less outgoing (t=-3.32, p=.001), and as they had a lower satisfaction level in their major (F=7.25, p=.001). The students showed higher ego-resilience levels before clinical practice as they felt more strongly that they were in good health (F=3.74, p=.026) and as their personality was more outgoing (F=3.19, p=.002). The stress and anxiety levels before clinical practice also had a positive correlation (r=.211, p=.010) and the ego-resilience and anxiety before clinical practice had a negative correlation (r=-.313, p<.001). Based on the finding, it is necessary to develop the competence improvement program that can reduce the anxiety of nursing college students before clinical practice in order to improve their ego-resilience.

• Journal of The Korean Society of Grassland and Forage Science
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• v.15 no.1
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• pp.52-60
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• 1995

This experiment was carried out to determine the effect of nitrogen application level of cattle sluny(T1:150, T3:250, T53.50 kglha) and chemical fertilizer(T2:150, T4:250, T6:350 kg/ha) on the growth characteristics, dry matter yield and chemical soil property of Sorghum-Sudangrass hybrid [Sorghum bicolor L. Moench]. The results obtained are summarized as follows: Mean stem diameter was significantly increased by increasing nitrogen application level of cattle slurry and chemical fertilizer. Especially, T6 treatment was the highest as 11.1 mm, while T1 treatment w a the lowest as 0.3 mrn. According to the same level of nitrogen application, cattle slurry treaunent(T1, T3 and T5) were showed a lower mean stem hardness than chemical fertilizer treatment(T2, T4 and T6). Especially, T3 treatment was the softest at 0.7 kg/$cm^2$. The dead stubble and tiller number were increased by increasing nitrogen level of cattle slurry and chemical fertilizer(P

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.115-121
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• 2019

The purpose of this study was to examine relation between perception on hospice and attitude toward death to provide baseline data for the development of programs for hospice or death-related education for university students. The survey was performed on 150 students in four universities in B metropolitan city. The data was collected from July 30 to August 13, 2019. Data were analyzed using descriptive analysis, t-test, ANOVA Pearson's correlation coefficient with the SPSS/WIN 26.0 program. The mean of perception on hospice score was 3.06 out of 4, of the attitude toward death, 'neutral acceptance', 'fear of death', 'death avoidance', 'approach acceptance', and 'escape acceptance' had average scores of 5.31, 3.77, 3.56, 3.15, and 3.06, respectively. There were significant differences in perception on hospice according to gender, major, and experience of hospice-related education and in attitude toward death according to gender, major, religion, subjective health status, experience of hospice-related education. The relationship between perception on hospice and neutral acceptance showed a significant positive correlation, and fear of death and death avoidance showed a significant negative correlation. Therefore, we need consider these variables to develop a hospice or death-related education program to enhance university students' attitudes to death and their perception of hospice.

• Journal of Animal Science and Technology
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• v.55 no.1
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• pp.33-39
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• 2013

This study was conducted to investigate the effects of feeding patterns of concentrates on growth performance, blood parameters and carcass characteristics in Hanwoo cows. Randomly-allocated groups, restricted concentrate feeding (T1), restricted concentrate feeding for 6 months and ad libitum 2 months (T2), restricted concentrate feeding for 4 months and ad libitum 4 months (T3), were contained with 9 animals. According to feeding patterns of concentrate, growth performance was not significantly different among the treatment groups. However, ADG tended to be higher in T2 group (0.75 kg/d) compared to the other groups (T1: 0.62 kg/d, T3: 0.72 kg/d). DMI was not significantly different among the treatment groups, interestingly, rice straw intake was significantly higher in T1 group compared with others (p<0.05). There were significant difference among feed conversion ratio, which are 17.8, 12.8, and 14.1 kg for T1, T2, and T3 (p<0.05), respectively. The serum level of albumin, triglyceride, glucose and GPT were greater in T3 group compared to other groups at fattening 6 to 8 months (p<0.05). The results of yield traits, carcass weight, back fat thickness and rib eye area were not differ among treatment groups, but yield index was significantly greater in T2 group compared to T1 group (p<0.05). The 'A' appearance rate (%) of meat yield grade was highest in T2 group for 78%. The marbling score, meat color, fat color, texture and maturity in quality traits were not differ among the treatment groups. However, marbling score and appearance rate (%) of over 1st meat quality grade were tend to be increased at T3 rather (4.0, 56%) group compared with other groups (T1: 3.4, 56%; T2: 3.6, 33%). Thus, the present study suggested that restricted concentrate feeding (1.6% of BW) for 4 months during early fattening periods and ad libitum feeding for 4 months during late fattening periods are recommendable.

• Journal of Animal Science and Technology
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• v.63 no.4
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• pp.790-798
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• 2021

The objective of this study was evaluation of pig behavior changes related to temperature, relative humidity, volatile organic compounds (VOCs), and illuminance. A total of 24 growing pigs ([Yorkshire × Landrace] × Duroc) were used in the experiment. A sensor was installed at a height of 0.5 m in the center of the pig house. In experiment 1, temperature was changed every four days to 18℃ (T1), 22℃ (T2), 26℃ (T3), and then 30℃ (T4). In experiment 2, relative humidity was adjusted to 45% (low humidity [LH]), 60% (middle humidity [MH]), and then 75% (high humidity [HH]) for four days. In experiment 3, after cleaning the pig house just before experiment, only minimal ventilation was provided. VOCs and pig behaviors were observed for 7 days without cleaning the pig house. In experiment 4, three light bulbs of 40 W (470 lumens / 45 lx; low illuminance [LI]), 75 W (1,055 lumens / 103 lx; middle illuminance [MI]), and 100 W (1,521 lumens / 146 lx; high illuminance [HI]) were used for four days each. Pig behavior analysis was performed for following criteria : Feed intake, Standing, Lying, Sitting, Drink water, Rooting, Posture transition (lying-standing), Posture transition (standing-lying), Wallowing, and Biting. In experiment 1, feed intake time was lower (p < 0.05) for the T3 than other treatment groups. Standing time was highest (p < 0.05) for the T1 and lowest (p < 0.05) for the T3. Lying time was shorter (p < 0.05) in T1 and T2 compared to T3 and T4. Drinking frequency was higher (p < 0.05) for the T4 than other treatment groups. In experiment 2, the frequency of rooting and wallowing increased (p < 0.05) with increasing humidity. LH showed the lowest (p < 0.05) rooting frequency and HH showed the highest (p < 0.05) rooting frequency. In experiment 3, VOCs concentration did not (p > 0.05) change pig behavior. In experiment 4, lying time was the longest (p < 0.05) at LI and shortest (p < 0.05) at HI. Therefore, pig behavior is heavily influenced by the environment, especially temperature and humidity. However, correlation between pig behavior to VOCs and illuminance seems to be needed more research.

• Clinical and Experimental Reproductive Medicine
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• v.37 no.3
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• pp.231-237
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• 2010

Objective: To evaluate whether T helper 1 (Th1) immune response is predominant in women with reproductive failures (recurrent spontaneous abortion and recurrent implantation failure) and the activation of T cell is related to Th1 propensity. Methods: Women with a history of recurrent implantation failure or recurrent spontaneous abortion comprise the study group (n=37). Controls are normal fertile women without a history of infertility or pregnancy losses (n=11). Th1/Th2 ratios of interferon (INF)-$\gamma$/interleukin (IL)-10 and tumor necrosis factor (TNF)-$\alpha$/IL-10 expression on $CD3^+/4^+$ cells, CD154, and CD69 expression on T cells are measured by flow cytometric analysis. Results: The ratios of TNF-$\alpha$ to IL-10 expressing on $CD3^+/4^+$ cells (Th1/Th2 cell ratios) are significantly higher in study group ($42.1{\pm}2.3$) as compared with that of controls ($28.7{\pm}2.7$) (p=0.002). The overall trend of CD154 and CD69 expression on T cells are elevated in study group than those of controls. The proportion (%) of $CD3^+/4^+/154^+$ cells ($1.7{\pm}0.5$ vs. $0.3{\pm}0.2$, p=0.038) and the % of $CD3^+/8^+/154^+$ cells ($0.6{\pm}0.2$ vs. $0.1{\pm}0.0$, p=0.024) are significantly higher in study group. The % of $CD3^+/69^+$ cells ($5.6{\pm}1.9$ vs. $1.3{\pm}5.4$, p=0.046) and % of $CD3^+/8^+/69^+$ cells ($4.8{\pm}1.3$ vs. $1.8{\pm}0.2$, p=0.035) among $CD3^+/8^+$ cells are significantly increased in study group. Conclusion: Women with reproductive failures have Th1 propensity with increased T cell activation. These finding means that activated T cell has a harmful effect on early pregnancy and implantation by induction of Th1 immunity.

• Korean Journal of Poultry Science
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• v.29 no.4
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• pp.265-270
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• 2002

This study was conducted to determine the effect of aluminum sulfate[Al$_2$(S0$_4$)$_3$$.$14H$_2$O], commonly referred to as ALUM, addition to broiler litter on 3 and 6 week old broiler performance and the nitrogen content of the litter at 6 weeks of age. The two treatment groups were 134 identical diets with the same protein levels, but one group(T$_1$) had ALUM added as a top dressing to the litter at a rate of 200 g ALUM / kg of rice bran, while T$_2$ did not have ALUM added to the litter. Feed consumption for T$_1$ was higher in the 22 to 42 day-old and 0 to 42 day-old periods (P<0.05). Body weight in T$_1$ was also higher in the 0 to 42 day -old period (P<0.0l). There was no difference, however, in the feed : gain ratio between T$_1$ and T$_2$ During the first 5 weeks, T$_1$ had significantly less(P<0.05 or 0.01) ammonia emission from the litter than T$_2$ but at 6 weeks there was no difference in ammonia concentration between the two groups. At 6 weeks, T$_1$ had a lower litter pH than Ta (P<0.05) and total Kjeldahl nitrogen(TKN) was higher far T$_1$ than T$_2$ (P<0.05). However,71 did not show any difference from T$_2$ in the content of NH4-N and NO3-N. In summary, the addition of ALUM to broiler litter improved broiler performance at 6 weeks, while increasing nitrogen content from the litter used as the nitrogen fertilizer although ammonia emission was increased in T$_1$ at 6 weeks.