• Title/Summary/Keyword: quality of contents

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Vertical Distribution and Potential Risk of Particulate Polycyclic Aromatic Hydrocarbons in High Buildings of Bangkok, Thailand

  • Pongpiachan, Siwatt
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.3
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    • pp.1865-1877
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    • 2013
  • Vertical variations of polycyclic aromatic hydrocarbon (PAH) concentrations in $PM_{10}$ were investigated in order to assess the factors controlling their behavior in the urban atmosphere of Bangkok City, Thailand. Air samples were collected every three hours for three days at three different levels at Bai-Yok Suit Hotel (site-1 and site-2) and Bai-Yok Sky Hotel (site-3) in February $18^{th}-21^{st}$, 2008. The B[a]P concentration showed a value 0.54 fold, lower than the United Kingdom Expert Panel on Air Quality Standard (UK-EPAQS; i.e. 250 pg $m^{-3}$) at the top level. In contrast, the B[a]P concentrations exhibited, at the ground and middle level, values 1.50 and 1.43 times higher than the UK-EPAQS standard respectively. PAHs displayed a diurnal variation with maximums at night time because of the traffic rush hour coupled with lower nocturnal mixing layer, and the decreased wind speed, which consequently stabilized nocturnal boundary layer and thus enhanced the PAH contents around midnight. By applying Nielsen's technique, the estimated traffic contributions at Site-3 were higher than those of Site-1: about 10% and 22% for Method 1 and Method 2 respectively. These results reflect the more complicated emission sources of PAHs at ground level in comparison with those of higher altitudes. The average values of incremental individual lifetime cancer risk (ILCR) for all sampling sites fell within the range of $10^{-7}-10^{-6}$, being close to the acceptable risk level ($10^{-6}$) but much lower than the priority risk level ($10^{-4}$).

Apparel production methods of domestic fashion brands for the activation of K-fashion (K-패션 활성화를 위한 국내 패션브랜드의 의류생산 방식 고찰)

  • Ahn, Young-Sill;Kim, Hee-Sun
    • Journal of the Korea Fashion and Costume Design Association
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    • v.20 no.3
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    • pp.115-128
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    • 2018
  • The purpose of this study is to systematize various clothing production methods that domestic fashion brands are utilizing to produce fashion products, and to propose effective clothing production methods according to the characteristics. The research methods are contents analysis method of the literatures, articles, reports, and interviewing method of the practitioners who are in charge of the production of fashion. First, the clothing production methods of the domestic fashion brands are categorized as follows. It is divided into a fashion brand management method and a promotion company entrustment method based on who carries out the clothing production and management. The fashion brand management method is subdivided into the 'rental-production', 'CMT', and 'self-production' methods. All three methods are performed at domestic and global sourcing, but the CMT method is more utilized at the global sourcing. The promotion company entrustment method is subdivided into the 'full consignment production method', the 'CMT method involving promotion company', and 'direct buying method by promotion company'. All methods are performed at domestic and global sourcing. Second, the results of reviewing effective clothing production methods, according to characteristics are as follows. If fashion brands control the production and management, they use all three fashion brand management methods. The fashion brands use the promotion company entrustment method when they wants to offer special products, or the number of items is large, or the production management is difficult, or the manpower and equipment size is reduced. The domestic sourcing is utilized by fashion brands and promotion companies when production management is required for high quality apparel production, in case of trendy and complex designs, spot production, and in small quantity production. The global sourcing is utilized by fashion brands and promotion companies when it comes to lowering the production cost, fashion brands preferred the mass production of apparel with design that can be pre-planned.

Preparation and Characterization of PEG-impregnated Aloe Gel through DIS Processing of Aloe vera Leaf Slice (DIS 공정에 의한 Polyethylene Glycol 함침 알로에 베라 겔의 제조 및 특성화)

  • Kwon, Hye Mi;Hur, Won;Lee, Shin Young
    • KSBB Journal
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    • v.28 no.6
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    • pp.356-365
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    • 2013
  • The novel Aloe gels were prepared with dewatering and impregnation by soaking (DIS) processing of Aloe vera leaf slice at four different temperatures (25, 35, 45 and $55^{\circ}C$), using dehydration solution of 40% (w/v) polyethylene glycol (PEG4000). The PEG-impregnation to Aloe vera leaf slice during DIS was observed depending on immersion temperature, and the PEG-impregnated Aloe vera gel (PEG-i-AVG) obtained was characterized using $^1H$ NMR, FT-IR, GPC, XRD and TGA. The PEG-i-AVG had the higher levels of Aloe bioactives (glucomannan and O-acetyl contents) and better quality indices by $^1H$ NMR and FT-IR spectroscopy than those of native Aloe gel. Also, the obtained Aloe gel maintained the bimodal patterns in higher molecular weight region by GPC indicating no degradation of polysaccharide from native Aloe gel. The result observed by SEM confirmed a surface modification by forming the porous structure, and TGA result exhibited better thermal stability than that of native Aloe gel. XRD result revealed that the crystalline structure in Aloe gel was led by incorporation of PEG. Significant decrease of %insolubility and high enhancement of water solubility index were observed, respectively, and highly ordered conformation such as a helix structure was also indicated by Congo red reaction. We concluded that the modification effect for enhancing function of native Aloe gel was successfully obtained by DIS process using PEG as a dehydrating agent. These results suggested that this DIS process had a high potential for developing a new minimally processed product from Aloe vera leaf.

Effect of Carbon Amino Silica Black Contained Superplasticizer on the Engineering Properties and Chromaticity of Black Color Concrete (카본 아미노 실리카 블랙 기반 고성능 감수제가 블랙 컬러 콘크리트의 공학적 특성 및 발색도에 미치는 영향)

  • Han, Min-Cheol;Hong, Seok-Min
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.1 no.3
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    • pp.181-188
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    • 2013
  • This paper is to investigate experimentally an effect of carbon amino silica black-superplasticizer(CASB-SP)on the engineering properties and chromaticity of black color concrete with 0.45 of W/C(water to cement). CASB-SP and carbon black were applied for pigment of the concrete. To prevent efflorescence of concrete, four different water repellent agents were also applied. As results, it was found that use of CASB-SP increased the slump and air contents. Furthermore, the use of CASB-SP increased the compressive strength. As CASB-SP dosages increased, chromaticity was well developed. For the effect of water repellent agent, the use of epoxy type was effective for protection from efflorescence. Based on test results, it was evaluated that 0.5% of CASB-SP effectively improve the concrete quality as well as enhance the chromaticity with proper dosage.

Development of Open Clinical Training Program to Improve Radiology-Major Students' Clinical Competency (방사선(학)과 재학생의 임상적응 향상을 위한 개방형 임상실습 프로그램의 제안)

  • Kim, Seon-Chil
    • Journal of radiological science and technology
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    • v.33 no.3
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    • pp.193-201
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    • 2010
  • This study aimed to develop an open clinical training program to improve radiology graduates' clinical competency in the hospital setting to raise quality of patient-centered medical service. Development of the training program is similar to that of an instructional system design model. The program was developed according to the ADDIE model. Elements of each phase were collected. Draft of the program was constructed from literature review and clinical demands. Preliminary training program was implemented to sample students with the draft. After consultation with related professionals, the program was modified and completed. Professional groups assessed content validity of the program. Five continuous phases of the program - analysis, design, development, implementation, and evaluation - accommodate changes in clinical environment and demands. They also provide adequate learning needs. Effectiveness of the program and appropriateness of contents in each phase achieved a satisfactory level of significance. This program reflected demands from medical fields and effective learning programs. The purpose of the open clinical training program is to train radiological technologists in clinical setting to actively engage in patient-centered medical service and to help utilize their professional knowledge.

The Effects of Self-help Management Program for Post Stroke Patients at Home (재가뇌졸중 환자를 위한 자조관리 프로그램의 효과 연구)

  • Mun, Young-Hee
    • Research in Community and Public Health Nursing
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    • v.15 no.2
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    • pp.218-227
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    • 2004
  • Purpose: The purpose of this study was to determine the effects of 5 weeks self-help management program developed by Kim et al. (2000-b) and reinforced with music therapy for post stroke patients. Method: This was pre-experimental study and the subjects were 14 post stroke hemiplegic patients at home who were registered at the Gunsan Health Center. The program was applied for five weeks and two hours for each session composed of the preparation step, the main step and the finishing step. The contents of the program were ROM exercise, daily activity training, risk factors and aftereffects, nutrition management and stress management. To collect data, all subjects were questioned before and after the application of the program. Collected data were analyzed through frequencies, percentages, Wilcoxen signed rank test and Cronbach's alpha using SPSS-WIN program. Result: After the application of the self-help management program, a statistically significant increase was observed in the subjects' ability to perform activities of daily living (p=.039), ability to perform instrumental activities of daily living (p=.005), self-efficacy (p=.001), self-care behavior (p=.001) and quality of life (p=.001), and a statistically significant decrease was observed in depression (p=.012). Conclusion: The present self-help management program was found to be helpful in improving the subjects' physical and psychological functions after they were attacked by stroke, so to be an effective nursing intervention strategy for post stoke patients. Future researches need to reinforce and materialize music therapy and to develop and apply a self-help management program that includes not only post stroke patients but also their families. In addition, it is necessary to expand the scope of subjects and apply follow-up management in order to continue self-help meetings.

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A Study on the Mode of Address and Meaning Creation of Underlight in Broadcasting Lighting (방송조명에서 언더라이트의 표현 양식과 의미 창출에 관한 연구)

  • Kim, Young-Jin;Park, Gooman
    • Journal of Broadcast Engineering
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    • v.21 no.5
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    • pp.749-759
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    • 2016
  • As image contents in broadcasting have been created in HDTVs and monitors have been commercialized, facial expression of objects in broadcasting lighting has become a very significant task. Figure modeling of objects in HDTVs requires smoother and cleaner video images owing to the expansion of precision of image expression by light. Lighting methods that enlighten characters in the digital generation have come to require a new change. Character modeling methods used on expression features of underlight are receiving attention for aesthetic expression of figures in HD images. Accordingly, the influence of underlight light source intensity, distance, and size on character modeling characteristics was experimentally measured and comparatively analyzed. The experiment results show that good results can be obtained only when the intensity is 17%∼25.5% in contrast to total brightness, distance is beyond 40cm, and the size is at least 20cm, to exhibit the optimum effect of underlight. This data will become material with high usage to gain smoother and cleaner images of characters in future high-quality images.

Improvement in functional properties of conger eel skin gelatin by succinylation (Succinylation에 의한 붕장어껍질 젤라틴의 기능성 개선)

  • Kim, Jin-Soo
    • Applied Biological Chemistry
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    • v.39 no.4
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    • pp.282-286
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    • 1996
  • To effectively utilize fish skin gelatin as a material for quality improvement in surimi gel from fish with a red muscle, conger eel skin gelatin was modified with succinic anhydride, and funtional properties such as emulsifying activity and emulsifying stability were determined. The degree of chemical modification incresed up to 0.3 g of succinic anhydride/g of gelatin, above this adding ratio a nearly constant value was reached. The maximum amount of modification was about 90%. The emulsifying activity and emulsifying stability of gelatin gradually increased up to 89.8% of succinylation extent, little changed above of succinylation extent. The other functional properties as solubility, water holding capacity, foam expansion and foam stability were improved following succinylation with 0.3 g of succinic anhydride/g of gelatin. Amino acid composition of succinylated gelatin was similar to that of unmodified gelatin. Heavy metal contents such as cadmium, lead, copper and zinc of succinylated gelatin were lower than those of unmodified gelatin.

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Nutritional Evaluation of Leafy Safflower Sprouts Cultivated under Different-colored Lights (다른 광원 조사로 재배된 홍화 새싹채소의 영양성분 평가)

  • Kim, Tae-Su;Chang, Moon-Sik;Ju, Young-Woon;Park, Chun-Geon;Park, So-I;Kang, Myung-Hwa
    • Korean Journal of Food Science and Technology
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    • v.44 no.2
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    • pp.224-227
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    • 2012
  • As consumer interest in seed sprouts is increasing throughout the world, there is a need to investigate the potential production of leafy sprouts. Three colors of light; white (WRM), blue (BRM), and red (RRM), were studied to evaluate their effects on the approximate compositions of leafy safflower sprouts and their content of vitamin C. The approximate contents of moisture, ash, and total lipids were higher in sprouts grown with RRM than with BRM or WRM; however, crude protein content was higher in sprouts grown with WRM than with BRM or RRM. Chlorophyll content was higher in sprouts grown with RRM than with WRM or BRM, and ascorbic acid content was 157.57 mg% with WRM, 164.64 mg% with BRM and 158.10 mg% with RRM. Our results indicate that cultivation of leafy safflower sprouts under different-colored lights was an effective process for enhancing their nutritional quality.

Long-term Seasonal and Interannual Variability of Epilimnetic Nutrients (N, P), Chlorophyll-a, and Suspended Solids at the Dam Site of Yongdam Reservoir and Empirical Models

  • An, Kwang-Guk
    • Korean Journal of Ecology and Environment
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    • v.44 no.2
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    • pp.214-225
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    • 2011
  • The objectives of the study were to evaluate seasonal patterns of epilimnetic water quality, and determine interannual eutrophication patterns at the dam site of Yong-dam Reservoir using long-term data during 2002~2009. Ionic dilutions, based on specific conductivity, occurred in the summer period in response to the intense monsoon rain and inflow, and suspended solid analysis indicated that the reservoir was clear except for the monsoon. Seasonality of nitrogen contents varied depending on the types of nitrogen and responded to ionic dilution; Ammonia-nitrogen ($NH_4$-N) peaked at dry season but nitrate-nitrogen ($NO_3$-N) peaked in the monsoon when the ionic dilution occurred. The maxima of $NO_3$-N seemed to be related with external summer N-loading from the watershed and active nitrogen fixation of bluregreens in the summer. $NO_3$-N was major determinant (>50%) of the total nitrogen pool and relative proportion of $NH_4$-N was minor. Long-term annual $NO_3$-N and TDN showed continuous increasing trends from 2004 to 2009, whereas TP and TDP showed decreasing trends along with chlorophyll-a (CHL) values. Empirical model analysis of log-transformed nutrients and N : P ratios on the CHL showed that the reservoir CHL had a stronger linear function with TP ($R^2$=0.89, p<0.001) than TN ($R^2$=0.35, p=0.120). Overall results suggest that eutrophication progress, based on TP and CHL, is slow down over the study period and this was mainly due to reduced phosphorns, which is considered as primary nutrient by the empirical model.