• Food Science and Preservation
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• v.10 no.3
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• pp.293-296
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• 2003

This study was carried out to obtain physical characteristics of paper board and to measure bulge of 1,000 mL carton pak by different storage conditions. Water holding capacity of paper boards were mean of 5.6～7.0％, stiffness of machine direction(MD) was 243.3～266.7 g/cm and cross direction(CD) was 99.2～109.2 g/cm, respectively. The weight of 1,000 mL carton pak were in the range of 29.17～31.26 g. The bulge of carton paks were 6.33～6.93 mm after 7 days at 6$^{\circ}C$ storage, 7.26～8.56 mm after 7 days at 10$^{\circ}C$ and was 8.66 mm after 7 days at 10$^{\circ}C$ treated with 1 hour heat shock per day, respectively. According to this result, the bulge length of 1,000 mL carton pak was showed increased pattern upon increasing the storage temperature and the order was 6$^{\circ}C$ < l0$^{\circ}C$ < 10$^{\circ}C$＋ heat shock. To prevent bulge occurence, it was thought to control storage temperature and humidity of paper board or carton pak and to minimize their shock on cold chain system after filling process.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.26 no.2
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• pp.170-177
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• 2016

Objectives: This study was conducted to evaluate the total heavy metals contents and chemical forms in the animal manure compost. Materials and methods: A total of 109 compost samples were collected throughout the country and classified into three groups in accordance with the raw materials; pig manure, poultry manure and mixed(pig+poultry+cattle) manure. The compost samples were analyzed for total metal content and sequential chemical extraction to estimate the quantities of metals. Results: Concentrations of Zn and Cu in several compost samples were higher than the maximum acceptable limits by the Korea Compost Quality Standards. Concentrations of Zn, Cu, and Cd in compost samples were 257~5,102, 68~1,243, and 0.02~2.54 mg/kg respectively, while Cr, Ni, As, and Pb were < 20 mg/kg. The concentrations of heavy metals in pig manure compost were higher than those of both the poultry and the mixed manure compost. The predominant forms for extracted metals were Cr, Ni, Zn, As, and Pb, residual; Cu, organic; and Cd, carbonate. Conclusions: Results indicate that the Zn and Cu contents in compost were higher than other heavy metals and the heavy metal contents were greater in pig manure compost followed by mixed and poultry manure compost. To prevent the accumulation of heavy metals in soil where animal manure compost is applied, strategy for reducing heavy metal concentrations in animal manure and compost must be considered.

• Journal of Internet Computing and Services
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• v.2 no.4
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• pp.101-109
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• 2001

In recent year, the use of digital picture information and general picture information has been increased, However, numerous copyright infringement and pirate copy of picture information through Internet and CD-ROM happen very often, As a result, several methods of watermarking have been presented to solve and verify distortion of the original data, In addition, watermark data have been suggested to resolve the vastness of the original data, Watermarking methods are often used to protect the right of ownership of a copyright, However, these Watermarking methods have brought the obscurity of recognition caused by the complexity of verification procedure and the increase of magnitude computation occurrence, This paper mainly mentions about the local optimization of scaling parameter, the maximization of hiding of Watermark information and maximization of watermark information in case of restoration that determine the amount of inserted information which is used for preventing distortion and transformation of the original data caused by insertion and hiding of Watermark information on compounding Autostereogram into JPEG picture information.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.22 no.53
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• pp.99-109
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• 1999

The International Organization for Standardization(ISO) is a worldwide federation of national standards bodies. Through ISO Technical Committees(TC), various International Standards are being carried out. Each member body interested in a subject for which a TC has been established has the right to be represented on that committee. ISO collaborates closely with the International Electro-technical Commission(IEC) on all matters of electro-technical standardization. ISO established the ISO 9000 Family standard in 1987, and International Standard ISO 9000-3 was worked by ISO/TC 176, Quality management and quality assurance, Subcommittee 2(SC 2), Quality systems, in accordance with the ISO/IEC Directives, Part 3: 1997 Rules for the structure and drafting of International Standards, Many organizations have applied the ISO 9000-3 for their quality system standard in the software sector. That means that ISO 9000-3: 1991 and ISO 9000-3: 1997 have been used successfully by the software industry as the internationally accepted interpretation of ISO 9001 for the development and maintenance of computer software. Additionally ISO 9000-3: 1997 involved how the software life cycle processes defined in ISO/IEC 12207: 1995, Information Technology - Software Life Cycle Processes related to the requirements of ISO 9001:1994. After having performed full reviews of the WD3, CD1, CD2 and DIS drafts of the future ISO 9001:2000, this document will partly replace the part of ISO 9000-3: 1997 for measurement analysis and improvement of quality management system in computer software industry, as an interpretation for organizations and certification bodies, which will be withdrawn when ISO 9001:1994 is replaced by ISO 9001:2000,.

• Journal of Environmental Science International
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• v.27 no.2
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• pp.109-122
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• 2018

This study was conducted to investigate the removal characteristics of heavy metals and sulfate ion from acid mine drainage by porous zeolite-slag ceramics (ZS ceramics) that was prepared by adding wood flour as pore-foaming agent while calcining the mixtures of natural zeolite and converter slag. The batch test showed that the removal efficiency of heavy metals by pellet-type porous ZS ceramics increased as the particle size of wood flour was decreased and as the weight mixing ratio of wood flour to ZS ceramics was increased. The optimal particle size and weight mixing ratio of wood flour were measured to be $75{\mu}m$ and 7~10%, respectively. The removal test with the porous ZS ceramics prepared in these optimal condition showed very high removal efficiencies: more than 98.4% for all heavy metals and 73.9% for sulfate ion. Relative to nonporous ZS ceramics, the increment of removal efficiency of heavy metals by porous ZS ceramics with $75{\mu}m$ and 10% wood flour was 5.8%, 60.5%, 36.9%, 87.7%, 10.3%, and 57.4% for Al, Cd, Cu, Mn, Pb, and Zn, respectively. The mechanism analysis of removal by the porous ZS ceramics suggested that the heavy metals and sulfate ion from acid mine drainage are eliminated by multiple reactions such as adsorption and/or ion exchange as well as precipitation and/or co-precipitation.

• The Journal of Korean Society for Radiation Therapy
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• v.8 no.1
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• pp.109-114
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• 1996

PURPOSE : To investigate the effect of asymmetric jaws for delivering a uniform accurate dose of radiation to the junctions. METHODS & MATERIALS : A linear accelerator with a set of asymmetric jaws(varian 600C, 2100C, 2100CD with 4mev, 10mev, 10mev). Dose disribution was measured at the junctions with films in phantom. Total $10{\times}20cm^2$ with each $10{\times}10cm^2$ in deviation of ${\pm}1mm$ jaws. RESULTS : Film dosimetry showed the accuracy of asymmetric jaws depending on the machine. CONCLUSION : Understanding the mechanical characteristics of the use of half-beam at the junctions, without hot or cold regions.

• Korean Journal of Soil Science and Fertilizer
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• v.50 no.5
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• pp.472-481
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• 2017

Agricultural field near at the abandoned metal mine and industrial area has a high possibility to be polluted by heavy metals. However, concern about chemical properties including heavy metal concentration has been increased and biological properties such as soil respiration has been minimal in heavy metal polluted field. Therefore, main objective of this research was to evaluate soil respiration as an indicator of heavy metal pollution in agricultural field. Total of 60 sampling sites including each 30 sites of abandoned metal mine and industrial area were selected and heavy metal concentration, soil respiration, and chemical properties were measured. Results showed that heavy metal concentration in metal mine area was ranged Cu: $6.21~85.23mg\;kg^{-1}$, Pb: $23.84{\sim}1,044.72mg\;kg^{-1}$, As: $1.88{\sim}691.44mg\;kg^{-1}$, Zn: $18.72{\sim}527.55mg\;kg^{-1}$, Cd: $0.58{\sim}4.27mg\;kg^{-1}$, and Cu: $0.29{\sim}30.62mg\;kg^{-1}$, Pb: $4.41{\sim}19.77mg\;kg^{-1}$, As: $2.23{\sim}11.76mg\;kg^{-1}$, Zn $39.98{\sim}109.59mg\;kg^{-1}$, Cd $0.29{\sim}0.57mg\;kg^{-1}$ for industrial area respectively. While no sampling site was exceed the threshold value of each heavy metals in industrial field, metal mine area was highly polluted with Pb, As, Zn, and Cd. Soil respiration in the metal mine and industrial area was ranged $12.05{\sim}299.80mg\;O_2\;kg^{-1}$ and $27.68{\sim}330.94mg\;O_2\;kg^{-1}$, respectively. Correlation analysis between heavy metal concentration in soil and soil respiration showed that negative correlation was observed in metal mine area while no correlation was observed in industrial area. This result might indicate that as heavy metal concentration was increased, microbial activity in soil was decreased resulting decrease of soil respiration rate. Overall, soil respiration can be used as indicator of heavy metal pollution in soil and more biological properties need to be evaluated to better understand heavy metal pollution in soil.

• Korean Journal of Veterinary Research
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• v.36 no.2
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• pp.371-378
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• 1996

Three and 2 strains of E coli O157 were isolated from fecal materials of cattle (390) and pigs (420) in Korea, respectively. One strain of O157:H7 isolated from cattle and 2 strains of O157:H7 isolated from pigs were identified as verotoxin-1 (VT-1) produing strains and 2 strains (O157:H7 and O157:H-) isolated from cattle were identified as verotoxin-2 (VT-2) producing strains by neutralization test on HeLa and Vero cells. Culture supernatants of the isolates were cytotoxic to HeLa and Vero cells. The levels of cytotoxin produced by isolates were $10^2{\sim}10^4$ cytotoxic dose($CD_{50}$)/ml. Also, VT-2-converting bacteriophage was isolated from KSC109 strain which had been isolated from cattle. Molecular weight of the phage DNA was determined as approximately 45 Kb in 0.8% agarose gel electrophoresis, and morphology of the phage stained with phosphotungstic acid was observed by transmissible electron microscopy.

• Environmental Analysis Health and Toxicology
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• v.25 no.2
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• pp.99-109
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• 2010

The distribution of ambient air particles varies according to climate, industries, and other sources. In this study, ambient air particles (less than 12.1 ${\mu}m$) were monitored from February to August, 2007 as 12 different fractions sorted by a cascade impactor. Particles in the size range from 0.33 ${\mu}m$ to 0.76 ${\mu}m$ comprised the main fraction of ambient air particles in Seoul, Korea. On the day of an Asian dust event, the particle fraction size increased to 1.25~2.5 ${\mu}m$. The different sized particle fractions were also monitored for metals and were found to contain toxic heavy metals including Pb, Cd, Hg, Cr and As. Particle preparations were significantly cytotoxic when exposed to cultured BEAS-2B cells. Microarray analysis of the treated cells indicated a significant up-regulation of a number of genes associated with oxidative stress, including metallothionein, heme oxygenase-1, heat shock protein 70, and NAD(P)H dehydrogenase-1.

• Journal of East-West Nursing Research
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• v.17 no.2
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• pp.103-109
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• 2011

Purpose: The purpose of this study was to examine the effects of music therapy on the anxiety and distress in patients taking thoracentesis. Methods: The quasi-experimental design was used with a nonequivalent control group pre-post test time series. Participatns were divided into the experimental (n=20) or control group (n=20). Music therapy was given to the experimental group with a CD that was made by the investigator by themes. The research tools included the VAS Anxiety Inventory, and the Subjective and Objective Distress Inventory. Data were analyzed using SPSS 14.0 program by ${\chi}^2$-test and t-test. Results: There were statistically significant differences in state (VAS) anxiety and subjective distress between two groups. Conclusion: The music therapy was effective in reducing the anxiety and subjective distress of patients taking thoracentesis. In the future, music therapy will be useful in the field of nursing as a nursing intervention to alleviate stress and enhance well-being.