• Nuclear industry
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• v.7 no.12 s.58
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• pp.84-87
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• 1987

• Nuclear industry
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• v.21 no.5 s.219
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• pp.20-25
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• 2001

• Journal of Digital Convergence
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• v.14 no.5
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• pp.11-19
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• 2016

SNS users are continuously increasing and SNS is emerging as a major PR channel of government. In particular, SNS can be a useful tool, but also the challenges for risk communication. This study is examined how nuclear regulatory organizations' SNS management and visitors' responses to the facebook pages in Korea and U.S.. Results indicated that both organizations frequently used information-oriented posting. Concerning the types of PR, NSSC tended to mainly use 'Relationship-Management PR', NRC mainly use 'Image PR.' In addition, our analyses on visitors' responses showed that visitors usually in response to participational and visual(ex. video, card news) typed contents. Based on its' results, this study provides practical suggestions for government's future SNS management strategies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.6
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• pp.473-477
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• 2005

In the study of foaming a general waste glass, sample 1 to 5 were made in a various foaming conditions, measurements of pH, density, compressive strength, thermal conductivity, and the sound absorption rate were carried out. Sample I showed the most small pore, and sample 5 showed pores of 3 times larger than that of sample 1. In terms of pore size, Sample 5 was foamed mostly well, but except lower density compressive strength, efficiency of sound absorption, testing in sound room were obtained below the minimum values is lower. In the case of Sample 1 it showed $0.58g/cm^3$, but the final target value was $0.8g/cm^3$. In the case of compressive strength it showed $22kg/cm^3$, which is above value of the final target. The efficiency of sound absorption of Sample 1 showed NRC 0.68, which is close to the final target of NRC 0.7.

• Asian-Australasian Journal of Animal Sciences
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• v.13 no.10
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• pp.1440-1444
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• 2000

Two feeding trials were conducted to evaluate the effects of inclusion levels of dietary vitamin and trace mineral (VTM) premixes on growth and nutrient digestibility in growing pigs. A total of 112 pigs ($24.82{\pm}3.22kg$) were employed for 49 days (exp. 1), and 168 pigs ($21.64{\pm}1.41kg$) for 40 days (exp. 2) in completely randomized block designs. Treatments were: 1) 100%, 2) 150%, 3) 200% and 4) 250% NRC (1998) requirement of VTM in exp. 1, and the ratio of vitamins to trace minerals at 1) 100:100%, 2) 100:150%, 3) 150:100% and 4) 150:150% of NRC (1998) requirement in exp. 2. Basal diets for feeding trials were formulated to contain 3,310 kcal ME/kg and 18% crude protein, and contained 0.25% chromic oxide as an indigestible marker for digestibility trials. Increasing dietary VTM premix in growing pigs had linear and quadratic effects (p<0.05) on ADG, and feed conversion ratio was also improved (p<0.05) as VTM premix was increased by 150-250% of NRC (1998) requirements in exp. 1. Adding vitamin to trace mineral premixes at 150% NRC (1998) over the control improved (p<0.05) ADG and feed efficiency in growing pigs, but performances were not improved by vitamin nor by trace mineral premixes alone (p>0.15) (exp. 2). There were no differences (p>0.05) in the digestibilities of energy, crude protein and fat among dietary treatments. However, increasing dietary VTM premix in growing pigs had a linear effect (p<0.05) on the digestibilities of calcium and phosphorus. The 200 or 250% fed group showed improved (p<0.05) calcium digestibility, and 250% fed group also showed improved (p<0.05) phosphorus digestibility as compared to 100% or 150% fed group (exp. 1). The digestibilities of Ca and P were higher (p<0.05) in 150% addition of vitamins than in 150% addition of trace minerals in the diet (exp. 2).

• Journal of Animal Environmental Science
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• v.8 no.2
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• pp.87-98
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• 2002

This study was conducted to determine nutritional values of different sources of food residues(FR) released in autumn and to compare them with nutrient requirements on NRC standard feeding system of swine. Hospital or cafeteria FR contained more cooked rice and side dishes residues and less vegetable residues and fruit peel, resulting in higher energy and lower fiber contents, compared to apartment complex FR, which had opposite patterns to these results. Chemical composition between hospital and cafeteria FR was almost similar. Salt(NaCl) content was more than 9 folds of NRC swine requirement, but much lower than the maximum tolerant level. Essenial and non-essential amino acids profile was similar among FR sources. Hospital or cafeteria FR protein had a similar pepsin digestibility to soybean meal protein. Apartment complex FR protein, however, had a much lower pepsin digestibility. When NRC nutrient requirements are considered, FR in swine diets could satisfy requirements of protein and all the essential amino acids, 75${\sim}$111% of digestible or metabolizable energy, and most of the major and minor minerals. All the FR contained extremely low levels of toxic heavy metals, indicating that they are completely safe from these toxic substances. It was concluded that hospital or cafeteria FR could be a nutritionally excellent and balanced feed source for swine.

• Asian-Australasian Journal of Animal Sciences
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• v.17 no.2
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• pp.228-236
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• 2004

Two varieties of alfalfa (Medicago sativa L cv. Pioneer and Beaver) and timothy (Phleum pratense L cv. Climax and Joliette), grown at different locations in Saskatchewan (Canada), were cut at three stages [1=one week before commercial cut (early bud for alfalfa; joint for timothy); 2=at commercial cut (late bud for alfalfa; pre-bloom head for timothy); 3=one week after commercial cut (early bloom for alfalfa; full head for timothy)]. The energy values of forages were determined using three approaches, including chemical (NRC 2001 formula) and biological approaches (standard in vitro and in situ assay). The objectives of this study were to determine the effects of forage variety and stage of maturity on energy values under the climate conditions of western Canada, and to investigate relationship between chemical (NRC 2001 formula) approach and biological approaches (in vitro and in situ assay) on prediction of energy values. The results showed that, in general, forage species (alfalfa vs. timothy) and cutting stage had profound impacts, but the varieties within each species (Pioneer vs. Beaver in alfalfa; Climax vs. Joliette in timothy) had minimal effects on energy values. As forage maturity increased, the energy contents behaved in a quadratic fashion, increasing at stage 2 and then significantly decreasing at stage 3. However, the prediction methods-chemical approach (NRC 2001 formula) and biological approaches (in vitro and in situ assay) had great influences on energy values. The highest predicted energy values were found by using the in situ approach, the lowest prediction value by using the NRC 2001 formula, and the intermediate values by the in vitro approach. The in situ results may be most accurate because it is closest to simulate animal condition. The energy values measured by biological approaches are not predictable by the chemical approach in this study, indicating that a refinement is needed in accurately predicting energy values.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2003.11a
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• pp.124-129
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• 2003

In case that the mixing weight ratio of waste form between boric acid and paraffin was 3.3/l, which had been adopted in the concentrate waste drying system (CWDS) of domestic nuclear power plants. Using several specimens with different diameters and heights, 50/100mm specimens. compressive strength were measured. The experiment result showed that the small diameter specimens of compressive strength are increased more than large diameter specimens. (d=50＞75＞100mm) The average compressive strength of specimens showed that the range from 22.43 $\kg/textrm{cm}^2$ to 38.57$\kg/textrm{cm}^2$ (NRC standard$\geq$4.1 $\kg/textrm{cm}^2$). NRC standard is recommended that the compressive strength test specimens be right circular cylinders, 2 to 3 inches in diameter, with a height-to-diameter(H/D) ratio of approximately two. and compressive strength were increased more than large loading rate. As test result, this conditions are a good agreement, and estimated.

• Korean Journal of Agricultural Science
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• v.47 no.4
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• pp.783-789
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• 2020

This study was conducted to evaluate growth performance of weaned pigs using diets based on ideal protein of the Korea swine feeding standard (KFS) and US the nutrient requirements of swine (NRC). A total of 96 weaned (initial body weight of 6.12 ± 1.21 kg) pigs were randomly allocated into 2 dietary groups with 12 pens per diet (4 pigs·pen-1) in a completely randomized design. The dietary treatments were corn and soybean meal-based diets formulated by the KFS and NRC nutrient requirements estimates for weaned pigs. Experimental diets were fed for 6 weeks in 2 phases feeding program based on age: 1) Phase 1 = week 1 to 3 (21 days); 2) Phase 2 = week 4 to 6 (21 days). During Phase 1 and 2, there were no differences (p > 0.05) for the initial and final body weights between the KFS and NRC groups. Additionally, the average daily gain (ADG), average daily feed intake (ADFI), and gain to feed ratio (G : F) during overall experimental period were not different between the groups. In conclusion, weaned pigs fed the diet based on the KFS had a similar body weight and growth performance to those fed the diet based on the NRC. This suggests that the Korea swine feeding standard may be used for the diet formula of weaned pigs in Korea swine production compared with the US nutrient requirements of swine.

• Journal of The Korean Society of Grassland and Forage Science
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• v.40 no.2
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• pp.111-116
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• 2020

This study was conducted to determine the maintenance energy requirements of growing goats in order to establish an appropriate energy benefit system, to reduce feed costs and improve livestock productivity of goat farmers, and to present basic data for detailed specifications afterwards. This experiment was conducted as a group specification test for a total of 3 months, with 32 goats of three months age and conducted by four treatments with different energy levels (T1: NRC+0%, T2: NRC+10%, T3: NRC+20%, and T4: NRC+30%). The average daily gain was the highest in the treated with NRC + 10% of the energy level of the experimental diet, and the feed conversion ratio was in the range of 6.3 g to 7.3 g in the group feeding experiment. Although there was no significant difference in digestibility between treatments, the digestibility of dry matter, crude protein, and crude fat was higher in T2 treated with NRC + 10% than the other treatments. Through the regression equation of the values of MEI and ADG obtained through the experiment (Y=0.5439X+111.51, R²=0.712), the maintenance energy requirement of the goat in the growing period was estimated to be 111.51 kcal/kgBW^0.75.