• Journal of Korean Biological Nursing Science
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• v.11 no.2
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• pp.157-166
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• 2009

Purpose: The purpose of this study was to determine the effects of self-care program using Short message service (SMS), e-mail, or telephone call on self-care compliance and nutritional status in maintenance of hemodialysis patient. Methods: Nonequivalent pretest-posttest control experimental design was used. Ninety-six patients were allocated to control (n=24), SMS (n=24), e-mail (n=24), or telephone (n=24) group from four hospitals. Experimental groups received self-care program about hemodialysis diet, drug administration, exercise, and fistula care by SMS, e-mail, or telephone call respectively at 3 times a week for 4 weeks. Results: Subjective self-care compliance, and objective self-care compliance including interdialytic weight of SMS and telephone groups were significantly increased than those of control groups. However, nutritional status of SMS and e-mail groups were significantly improved than those of control groups in albumin and protein level. Conclusion: Self-care program using SMS and telephone call were effective on promoting self-care compliance, while SMS and e-mail were effective on improving nutritional status. The pop-up remaining effect and easy accessible effect of SMS message in busy daily life was considered as an alarm to control fluid and diet.

• The Korean Journal of Food And Nutrition
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• v.8 no.4
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• pp.344-356
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• 1995

This study was performed to Investigate the nutritional knowledge and dietary patterns of 450 high school girls in some areas of Seoul. The survey conducted from September 20 to 25, 1993. The results obtained were summarized as follows ; The average height and weight of the subjects were 160.2$\pm$5.Ocm and 52.3$\pm$6.7kg respectively. The average obesity index of the subjects was 96.8$\pm$11.7%. Menarche was at 13 years of age in 35.6% of the subjects and at after 14 years of age in 37.3% of them. The average score of nutritional knowledge was 60.04 $\pm$ 14.49 and the average score of Perceived nutritional knowledge was 83.9$\pm$ 14.44. The mean score of nutritional knowledge was 49.61 $\pm$ 13.45. 35.6% of subjects ranked lecture of score as their primary sources of nutritional information. Major dietary problems of subjects were eating rapidly, skipping breakfast, unbalanced Inlet and choice of snacks according taste. Underweight group showed significantly higher than other groups In unbalanced diet(P<0.01) and showed significantly higher than other groups in taking a medicine(P<0.001). Obese group showed significantly lower than other groups in remaining meals and unbalanced diet (P<0.05) and showed significantly higher than other groups In voereating.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.28 no.7
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• pp.580-583
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• 2017

To compensate the degraded SAR image due to the residual errors and the spatial variant errors remaining after the motion compensation in the airborne SAR, we have introduced the autofocus method based on the partition processing. Thus, after we perform the spatial partition for the spotlight SAR data and the time partition for the stripmap SAR data, we reconstruct the subpatch images for the partitioned data. Then, we perform the local autofocus with the suitability analysis process for the phase errors estimated by the autofocus. Moreover, if the estimated phase errors are not properly compensated for the subpatch images, we perform the phase compensation method with the weight to the estimated phase error close to the degraded subpatch image to increase the SAR image quality.

• Applied Biological Chemistry
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• v.41 no.4
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• pp.235-240
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• 1998

The myristoyl-acyl carrier protein (ACP) specific thioesterase from Iris tectorum was purified to a considerable homogeneity and characterized. The enzyme was eluted with a considerable stability by double-gradients using Triton X-100 and low ionic KCl or Na-phosphate through DEAE-52, Octyl-Sepharose, Q-Sepharose, and hydroxyapatite chromatoraphy. SDS-PAGE analysis showed a single band of 39 kDa. The native molecular weight was estimated to be 82 kDa by Sephacryl S-200 chromatography, indicating that the enzyme was a dimer. The thioesterase showed a chain-length specificity to myristoyl-ACP in preference to other-ACPs. The enzyme activity decreased by 1.0 mM myristate to about 27% of the original activity, whereas the remaining activity with decanoate was about 90%. The purified thioesterase was inhibited by myristoyl-CoA more than by myristate, suggesting that the myristoyl-AGP thiolesterase might be controlled by myristic acid and/or a subsequent product myristoyl-CoA. In addition, some biochemical characteristics of the enzyme were described.

• Macromolecular Research
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• v.10 no.2
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• pp.103-107
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• 2002

High purity water soluble chitosans (WsCs) were employed as a flocculant to remove heavy metal ions from wastewater of industrial plating wastewater treatment complex. Their weight average molecular weights and polydispersities were 272,000~620,000 g/mol and 1.4~1.9 range, respectively and were readily soluble in water in the pH range of 3~11. Heavy metal ions such as chromium, iron and copper were removed well by WsCs. When WsCs was blended with either sodium N, N-diethyldithiocarbamate trihydrate (SDDC$_{T}$) or sodium salicylate (SSc), the removal efficiency was further increased primarily due to the excess amount of hydrophilic sulfonic and carboxylic groups. Especially, in the case of WsCs-SSc the remaining chromium and copper concentrations were 0.1 mg/L and 9.5 mg/L, which are 1/15 and 1/3 compared with that of pure WsCs, respectively. The former is within the acceptable limit, but the latter is not. Therefore, the effective copper flocculant remains to be studied.d.

• The Korean Journal of Ecology
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• v.21 no.4
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• pp.337-344
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• 1998

To select tolerant species among the Korean major woody plants for restoring disturbed ecosystems by air and soil pollution, we transplanted the seedlings of 56 species in control and polluted sites within Yeocheon industrial complex area, and compared their aboveground growth characteristics such as total branch length, total leaf weight, and maximum photozynthetic rate. Tolerant species growting better in polluted site than in control site was Quercus variabilis, Pinus thunbergii, Q. aliena, P. densiflora, Styrax japonica, Alnus firma, Celtis sinensis, Elaeagnus umbellata, Q. serrata, japonica, Sorbus alnifolia, and Q. acutissimia in local tree occuring within polluted area group (80%), Ailanthus altissima in street tree group (20%), Populus tomentiglandulosa and A. hirsuta var. sibirica in fast growing tree group (50%), Acer ginala and Abies holophylla in late successional tree group (20%), Betulla platyphylla var. japonica, Acer truncatum, A. palmatum, Syringa dilatata, and Rosa multifora in garden tree group (38%), and Q. rubura, and Robinia pseudoacacia in foreign restoring tree group (20%), respectively. The remaining plant species, 37 species (57% of total species), were classified into sensitive species to pollution. Those tolerant species can be utilized for restoration of the degraded ecosystem in this polluted area.

• The Korean Journal of Ecology
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• v.4 no.1_2
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• pp.33-37
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• 1981

This study was carried out to investigate the changes of flower properties due to decomposition in the course of time and results obtained are as follows; 1. The flower shape of Salix babylonica changed so rapid that it was difficult to recognize fragments after 40 days. 2. Total weight decreased by 50% after about 40 days. Loss on ignition changed rapidly for 40 days and then steadily. 3. Remaining carbon content decreased by a half only for first 20 days, then did steadily. 4. The content of phosphorus and total nitrogen slowly during the early period and then rapidly. 5. Above phenomena are supposed to be responisble for water content, nitrogen, and phosphorus.

• The Korean Journal of Ecology
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• v.21 no.3
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• pp.217-224
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• 1998

The heavy metal concentrations of seawater collected from the Onsan coastal zone in February and July 1996 and mussels(Mytilus edulis) in February 1997 were analysed. The concentrations of cadmium in seawater were in the range of 0.008-2.988 ${\mu}g/L$, while the ranges of copper and zinc concentrations were 0.08-2.55, and 0.21-35.12 ${\mu}g/L$, respectively. The metal concentrations decreased gradually with increasing distances from Daejeong stream, indicating that this stream was the major source of heavy metal input into the Onsan coastal zone. The concentrations of cadmium, copper and zinc in mussels were in the ranges of 1.40-25.09, 8.5-64.5, and 46.8-291.2 ${\mu}g/g$, respectively. The metal concentrations decreased gradually with increasing distances from Daejeong stream. Among organs of mussels, gill showed the highest concentrations of cadmium and the digestive gland showed the highest concentrations of copper and for zine the kidney showed the highest concentrations. The digestive gland and kidney revealed high proportion of cadmium in cytosolic fraction and the percentage of copper was high in the kidney and that of zine was high in the digestive gland. Metal-binding protein of mussels collected from the mouth of Daejeong stream was separated, using gel-filtration chromatography. In the kidney and gill of mussels, most of cadmium was associated with metal-binding protein. In contrast, most of the metal in the digestive gland and remaining tissues is bound to high molecular weight protein rather than metal-binding protein.

• Journal of Korea Foundry Society
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• v.38 no.3
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• pp.55-59
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• 2018

To optimize the conductivity and to reduce the weight by as much as possible, Al-Cu composites were prepared through a suction-casting procedure. Pure copper metal foam was infiltrated by melted aluminum with the use of the vacuum, after which warm rolling was conducted to remove several remaining pores at the interface between the Cu foam and the aluminum matrix. Despite the short casting time, significant dissolution of Cu into the melt was observed. Moreover, it was found that various Al-Cu intermetallic compounds arose at the interface during the isothermal heating process after the casting and rolling steps. The average thickness of the Al-Cu intermetallic compound tended to increase in proportion to the heating time. The electrical and thermal conductivity levels of the cast composites were found to be comparatively low, mainly due to the dissolution of the Cu foam and the formation of intermetallics at the interface.

• Proceedings of the IEEK Conference
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• 2001.10a
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• pp.225-229
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• 2001

There are about 41% (by weight) of scrap tires were pulverized to produce rubber powder and granules in the tire recycling industry of Taiwan. However, the reuse of the by-products, steel and fiber, of the scrap tires still needs to be improved. It is difficult to remove the remaining rubber on the surface of steel or fiber. This problem reduce the availability for further reuse of steel and fiber. In addition to the improvement of magnetic, gravity separation techniques or carbonization process, using cryogenic shredding process to separate rubber and fiber (or steel) had been used as another alternative. Cryogenic shredding process for scrap tires showed many advantages, the objective of this paper is to explore the mechanisms for the cryogenic shredding process of scrap tires. Cryo-SEM is used to investigate the topographic information, in-situ, from room temperature to -195$^{\circ}C$ . One square inch shredded tire chips are prepared for SEM study. The percentage of the shrinkage of rubber is also estimated, ca. 6.7%. Mechanisms of cryogenic shredding effects on the tire chips are discussed. The proper practice of cryogenic shredding process far scrap tires is also suggested.