Bioterrorism is becoming more attractive to terrorist groups owing to the dramatic increase in the utility and lethality of biological weapons in line with today's cutting-edge biological science and technology. The Republic of Korea is facing both internal and external terrorist threats, as well as the possible biological warfare by North Korea. Therefore, it is essential to establish an effective bioterrorism response system in the ROK. In order to come up with the adequate response system for the ROK, an in-depth study has been conducted on the current bioterrorism response system of the U.S. whose preparedness is considered relatively adamant. As a result, the following facts have been found: (1)the legislation with regard to bioterrorism has been established or amended according to the current situation in the U.S., (2)the counter terrorism activities have been integrated with the Department of the Homeland Security as the central agency in order to maximize the national CT capacity, (3)Specific procedures and instructions to cope with bioterrorism have been made into manuals so as to enhance the working-level response capabilities. Next, the analysis on the ROK's bioterrorism response system has been performed in various categories, including the legislation system, task role distribution, cooperative relations, and resource application. It turned out that the ROK's legislation basis is relatively weak and it lacks the apparatus to integrate the bioterrorism response activities on the national level. The shortage of the adequate response facilities and resources, as well as the poor management of manpower have also emerged as problems that hinder the effective CT implementations. Through an analytical and comparative study of the U.S. and the ROK systems, this paper presents several ways to ameliorate improve the current system in the ROK as follows: (1)establish the anti-terrorism law, which would be the basic legal basis for the bioterrorism-related matters; and make revisions to the disaster-related legislation, relevant to bioterrorism response activities, (2)establish an integrated body that has a powerful authority to coordinate the relevant CT agencies; and converge the decentralized functions to maximize the overall response capacity, (3)install the laboratories with a high biosafety level and secure enough of the strategic medical stock-pile, (4)enhance the ability of the inexperienced response personnel by providing with a manual that has detailed instructions.
Travel by airplane using airport in globalized modern society is familiar to our life but such airport can be a target of terrorists who would threaten our safety. However, aviation terrorism which is represented by 9.11 terror gives horror beyond our imagination to modern people. Since the first airplane hijacking in Peru in 1931 happened, security organization in each nation has taken various prevention measures to block aviation terrorism. The most realistic measures to prevent aviation terrorism would be security check activity to control approach of terrorist that passengers on airplane and cargos are checked to find out dangerous article like explosive etc. But security check activity in Korea shifted to security check activity focused on private security for efficiency of airport operation differently from security check activity in advanced countries where public interests is strengthened according to risk of terror after 9.11 system. That is, since Incheon airport opened in March 2001, security check system focused on the police was changed. Now Incheon international airport Corporation instructs and supervises security check job and private security personnel are in charge of actual security check activity. But this check system has limitation in blocking terror activity by terrorists which is systematized and intelligent as time passes due to deteriorated job satisfaction of private security personnel and confusing supervising system. Accordingly, it is suggested to introduce risk management skill which is one of management strategy of private corporation for security check activity to prevent terror activity. With this skill, risk factors of aviation terror are identified and analyzed regularly, and each process such as setting of priority, activity to reduce risk, and assessment of security is carried out. And it would be necessary to do efforts, for example, to properly change level of security check according to threat of terror such as to place policeman at airport security in case threat of terror is severe. On the other hand, it is necessary to establish national police organization for good communication of security check activity in field and supervising function, which can encourage systematization and specialization of aviation security job.
Vegetation can make not only to lower the urban ambient air temperature (UAAT) by crop evapotranspiration (ET) and increasing solar radiation albedo, but also to reduce the urban air pollution by $CO_2$ uptake and $O_2$ emission in addition to the reducing ozone concentrations by aid of lower the UAAT. To evaluate the effect of vegetation on urban heat island mitigation (UHIM), the climate change of 6 cities during 30 years are analysed, and the amount of ET, $CO_2$ uptake, $O_2$ emission and ozone concentrations are estimated in Korea. The most hot season is the last part of July and the first part of August, and the highest average UAAT of a period of ten days was $35.03^{\circ}C$ during 30 years (1979 - 2008). The mean values of maximum ET of rice and soybean in urban area during urban heat island phenomena were 6.86 and $6.00mm\;day^{-1}$, respectively. The effect of rice and soybean cultivation on lowering the UAAT was assessed to be 10.5 and $3.0^{\circ}C$ in Suwon, respectively, whereas the differences between the UAAT and canopy temperature at urban paddy and upland in Ansung were 2.6 and $2.2^{\circ}C$. On the other hand, the urban-garden in Suwon city had resulted in lowering the UAAT and the surface temperature of buildings to 2.0 and $14.5^{\circ}C$, respectively. Furthermore, the amounts of $CO_2$ uptake by rice and soybean were estimated to be 20.27 and $15.54kg\;CO_2\;10a^{-1}day^{-1}$, respectively. The amounts of $O_2$ emission by rice and soybean were also assessed to be 14.74 and $11.30kg\;O_2\;10a^{-1}day^{-1}$, respectively. As other cleaning effect of air pollution, the ozone concentrations could be also estimated to reduce 21.0, 8.8, and 4.0 ppb through rice-, soybean cultivation, and urban gardening during most highest temperature period in summer, respectively.
Lee Suk;Seong Jinsil;Kwon Soo I1;Chu Sung Sil;Lee Chang Geol;Suh Chang Ok
Radiation Oncology Journal
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v.21
no.1
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pp.100-106
/
2003
Purpose : To develop a patients' setup verification tool (PSVT) to verify the alignment of the machine and the target isocenters, and the reproduclbility of patients' setup for three dimensional conformal radiotherapy (3DCRT) and intensity modulated radiotherapy (IMRT). The utilization of this system is evaluated through phantom and patient case studies. Materials and methods : We developed and clinically tested a new method for patients' setup verification, using digitally reconstructed radiography (DRR), simulation, porial and digital images. The PSVT system was networked to a Pentium PC for the transmission of the acquired images to the PC for analysis. To verify the alignment of the machine and target isocenters, orthogonal pairs of simulation images were used as verification images. Errors in the isocenter alignment were measured by comparing the verification images with DRR of CT Images. Orthogonal films were taken of all the patients once a week. These verification films were compared with the DRR were used for the treatment setup. By performing this procedure every treatment, using humanoid phantom and patient cases, the errors of localization can be analyzed, with adjustments made from the translation. The reproducibility of the patients' setup was verified using portal and digital images. Results : The PSVT system was developed to verify the alignment of the machine and the target isocenters, and the reproducibility of the patients' setup for 3DCRT and IMRT. The results show that the localization errors are 0.8$\pm$0.2 mm (AP) and 1.0$\pm$0.3 mm (Lateral) in the cases relating to the brain and 1.1$\pm$0.5 mm (AP) and 1.0$\pm$0.6 mm (Lateral) in the cases relating to the pelvis. The reproducibility of the patients' setup was verified by visualization, using real-time image acquisition, leading to the practical utilization of our software Conclusions : A PSVT system was developed for the verification of the alignment between machine and the target isocenters, and the reproduclbility of the patients' setup in 3DCRT and IMRT. With adjustment of the completed GUI-based algorithm, and a good quality DRR image, our software may be used for clinical applications.
Lee Yang-Suk;Kim Jong-Bong;Shin Seung-Ryeul;Kim Nam-Woo
Food Science and Preservation
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v.13
no.3
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pp.375-381
/
2006
This study was carried out to analyze the nutritional component of Lepista nuda in order to estimate its nutritional and functional values. The content of moisture were $90.90{\pm}0.09%$ carbohydrate $4.34{\pm}0.07%$, crude protein $3.70{\pm}0.03%$, ash $0.55{\pm}0.04%$, and crude fat $0.47{\pm}0.01%$, respectively The reducing sugar was $636.17{\pm}7.50mg$. Total amount of free sugar was 97.32 mg, which were mainly composed of galactose (51.98 mg) and trehalose (22.48 mg). In the results of mined analysis, the content of K was the highest as $103.10{\pm}0.18mg$, followed by $56.01{\pm}0.20mg$ of Mg. The total content of hydrolyzed amino acid was 310.39 mg which consist of essential amino acids including valine (25.40 mg), leucine (22.52 mg), lysine (21.34 mg) and 198.89 mg of non-essential amino acids including glutamic acid (60.72 mg), aspartic acid (30.17 mg), and alanine (29.72 mg), as the major amino acids. free amino acids were 220.86 mg which were composed of essential amino acids (36.21 mg) inclusive of isoleucine (21.57 mg) and threonine (11.20 mg) and non-essential amino acids (184.65 mg) including glutamic acid (42.78 mg) and aspartic acid (32.44 mg) as major amino acids. Total content of amino acid derivatives was 187.85 me and that of hydroxyproline was highest as 121.50 mg.
Kim, Guy-Min;Hong, Ju-Yeon;Woo, Sook-Yi;Lee, Hyun-Suk;Choi, Young-Jun;Shin, Seung-Ryeul
Food Science and Preservation
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v.22
no.4
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pp.567-576
/
2015
The purpose of this study was to evaluate the functionality of ethanol extract of Aster scaber by analyzing anti-oxidant components and anti-oxidant activities, which was grown in wild and culture field. The yields of Aster scaber ethanol extracts were high after blanching treatment. The polyphenol content of dried Aster scaber grown in wild was 35.59 mg/g, which was higher than that of Aster scaber grown in culture field. The electron donating ability in all Aster scaber extracts were increased with increase in extract concentration, and the electron donating ability was the highest in extracts of the dried Aster scaber after blanching. The SOD-like activity of Aster scaber was the highest in its extract grown in wild field. In addition, the SOD-like activities of extracts of the dired Aster scaber after blanching were highest among the extracts of cultivated Aster scaber. The nitrite scavenging ability of extracts was increased at pH 1.2, and those was the highest in wild fresh Aster scaber. The inhibition effects on xanthine oxidase and tyrosinase were increased with increase in extract concentration, and the inhibition effects of extracts of Aster scaber in wild field were higher than those grown in culture field. Therefore, the consumption of Aster scaber would provide beneficiary effects due to its antioxidant activities and prevention of aging. The development of various processed food using Aster scaber will promote the consumption and its values.
To develop a new functional kimchi with antioxidative properties, salted baechu was soaked in black rice water extract for 6 h at room temperature. The antioxidative property of the water extract was $78.75{\pm}1.18%$ that of the control (0.1% [w/v] alpha-tocopherol). The black rice gel was added to the baechu kimchi preparation. The color of baechu kimchi treated with black rice water extract changed to dark violet and/or black. Control kimchi and black rice water-treated kimchi were stored at $4^{\circ}C$ for 30 days. No significant differences were detected between the control and the black rice water-treated group in the early stages of fermentation. As fermentation time increased, pH decreased and titratable acidity increased rapidly in control kimchi. However, such marked changes were not evident in test kimchi. The hardness value of black rice water-treated kimchi was higher than that of control kimchi after the midpoint of the fermentation period. The storage life of baechu kimchi treated with black rice water extract was prolonged by up to 5 days compared with control samples, owing to a decline in lactic acid bacteria and yeast levels during the final fermentation period in black rice water-treated kimchi. The total phenolic levels and the antioxidative capacity of black rice water-treated kimchi (83%) were approximately 1.5-fold higher than in control kimchi (57%). In sensory evaluation, black rice water-treated kimchi scored higher than did control kimchi using a blind test protocol.
Jo, Deokjo;Yoo, Seong-Yeol;Park, Joo-Hyeon;Gao, Yaping;Kim, Seul-Gi;Lee, Jea-Young;Kwon, Eun-Jin;Kwon, Joong-Ho
Food Science and Preservation
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v.21
no.3
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pp.365-372
/
2014
Imported Valencia oranges were evaluated to determine the relationship between the fruit size and its quality. The orange size was classified into three groups on a commercial basis: small ($140{\sim}160g/113{\pm}5$ fruit/box), medium ($190{\sim}220g/88{\pm}5$ fruit/box), and large ($250{\sim}280g/72{\pm}5$ fruit/box). The physicochemical and sensory properties were analyzed to evaluate the orange quality. No significant difference in the peel thickness and flesh ratio was detected across the fruit sizes. The juice yield of the medium-sized orange and the TSS/TA ratios of the medium-sized and large oranges showed the highest value, respectively (p<0.05). The large orange had the highest vitamin C content, which was positively correlated with both its DPPH and ABTS radical scavenging abilities (p<0.05). In the sensory evaluation of the fruits and their juice, the scores for sourness and overall preference were significantly higher in the medium-sized and large oranges than in the small ones. The total soluble solids, total acidity, TSS/TA ratio, and reducing sugar content were significantly related to the sensory properties. Finally, the quality and sensory properties were considered superior in the medium-sized and lager Valencia oranges. Further studies on the effects of the variety and origin of Valencia oranges on their quality and sensory properties are required.
This study was carries out to analyzed the antioxidant activities of extracts extrated from soybean and small black bean for the development of functional materials. Yields of hot-water and ethanol extracts were higher in the soybean than small black bea, and yields of hot-water extracts were higher than ethanol extracts. Total phenol contents were 26.22 mg/g in the ethanol extracts from small black bean, and were higher than those in the soybean extracts. Total flavonoid contents were 30.52 mg/g of hot-water extracts from small black bean. The EDA values were increased by the increase of extract concentrations and were high in the hot-water and ethanol extracts from bean and small black bean The EDA values was high in the extracts of small black bean from low concentrations. The SOD-like activity of hot-water and ethanol extracts from small black bean was higher than those of soybean extracts. The SOD-like activity was 73%, 62% of the hot-water and ethanol extracts from small black bean in 10 ml/mL extract concentration, respectably. The nitrite scavenging ability was high extracts from soybean was 47.60% in pH 1.2, Those of hot-water extracts were higher than in ethanol extracts in 10 ml/mL extract concentration. The xanthine oxidase inhibitory activities were increased by the increase of extract concentrations and were high in ethanol extracts from small black bean of low concentration. The xanthine oxidase inhibitory activities was hot-water extracts from soybean were higher than 5 ml/mL extract concentration than those of other extracts. The inhibitory activities of tyrosinase were increased by increase of extract concentrations and were high each other 42.05%, 45.67% of hot-water and ethanol extracts from small black bean in 10 ml/mL extract concentration. Reducing power was increased by increase of extract concentrations in extracts of small black bean, and were high more than double in hot-water and ethanol from small black bean than extracts of soybean.
Kim, Joo-Seok;Lee, Yea-Ji;Yang, Jinfeng;Sa, Yeo-Jin;Kim, Myeong-Ok;Park, Jong-Hyuk;Park, Dong-Sik;Yu, Chang-Yeon;Kim, Myong-Jo
Korean Journal of Plant Resources
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v.26
no.1
/
pp.111-118
/
2013
The objective of this study was to determine the biological activities of Sorglum bicolor extracts. Organic fractions, including n-Hexane, EtOAc, and n-BuOH fractions were obtained from the methanol extract of Sorglum bicolor M.. In DPPH radical scavenging activity, $SC_{50}$ values of methanol extract and EtOAc fraction were exhibited $0.66{\pm}0.26{\mu}g/mL$ and $1.03{\pm}0.02{\mu}g/mL$, respectively. Contents of total polyphenol and flavonoids in EtOAc fraction, which were much higher than those of other fractions, were 58.12 mg/g and 4.79 mg/g respectively. Also, effects of reducing power was strongly showed in EtOAc fraction. ${\alpha}$-Glucosidase and ${\alpha}$-amlyase inhibition activities were showed the higher effect in D.W. fraction ($2.83{\mu}g/mL$, $36.64{\mu}g/mL$). In MTT assay in the AGS, HT29 and HCT116 cell lines were significantly higher in the n-BuOH fraction than in the other fractions at $50{\mu}g/mL$ concentration of extracts.
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