• Title/Summary/Keyword: Wash-out

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A Study on the Evaluation of the Residential Facilities Satisfaction in the D-University Dormitory (D-대학교 기숙사 거주시설에 대한 만족도 평가에 관한 연구)

  • Kim, Dong-Young;Hwang, Yong-Woon
    • Journal of the Korean housing association
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    • v.19 no.2
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    • pp.63-72
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    • 2008
  • In general, the function of university dormitory includes residental, educational and many other functions for students who need quite environment and energetic living life. This functions influence the residental satisfaction of university dormitory. So this study attempts to evaluate many functions of the D-university dormitory according to the residents (students) needs and satisfaction. In the present work, SPSS window version 12.0 programs Anova (duncan, scheff, T-test. etc.) was used for analysis of statistical data which obtained from survey. The field surveys carried out for a total samples of 159 residents such as male (86), female (73), in the D-university dormitory. The result appears that the most dissatisfied factor of resident was the space and facilities of wash room. and students demand that various room and program in the dormitory except main space (unit room).

Natural Dyeing of Cotton Fabrics Using Charcoal (숯을 이용한 면직물의 천연염색)

  • Jo, Won-Joo;Lee, Jeong-Sook
    • Fashion & Textile Research Journal
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    • v.6 no.6
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    • pp.803-809
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    • 2004
  • In order to activate the characteristics of charcoal in fiber systems, this was carried out to experiment with the particle size from two micrometers to ten micrometers of charcoal powders on cotton fabrics. The results obtained were as follows; The fabrics were dyed with gray colors by charcoal. The K/S values, that were indicative of the dye affinity, became higher as the increase of dyeing temperature, dyeing time, and dyeing concentration. Also it was confirmed the morphology of the fiber surfaces adsorbed with the particle size from two micrometers to four micrometers of charcoal powder by scanning electronmicronscope. The cotton fabrics dyed by charcoals generally recorded 3-4 degree of wash fastness, 4-5 degree of dry-cleaning fastness, 4-5 degree acidic and alkaline perspirations and water fastness. In connection with the functional properties, cotton fabrics dyed with charcoal appeared that antibacterial, deodorization, far infrared emissivity were improved. Especially the deodorization was improved greatly by using charcoal.

Highly purified chitosan reduce blood alcohol concentration, aspartate aminotransferase, and alanine aminotransferase levels in human

  • Chung, Hwan-Suck;Koo, Hyun-Na;Moon, Young-Hoe;Kim, Hyung-Min
    • Advances in Traditional Medicine
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    • v.3 no.1
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    • pp.18-20
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    • 2003
  • The purpose of this study was to examine the effect of supplementary highly purified chitosan (HPC) on blood alcohol concentration in healthy human. The human study was performed with two sections. Each section of the study was conducted by two-phase cross-over design with a week wash-out period. All volunteers took HPC in one phase, and took a placebo in the next phase. Blood alcohol concentrations were different between in those taking HPC and in those taking the placebo in the human. And the concentration of serum aspartate aminotransferase (AST, GOT) and alanine aminotransferase (ALT, GPT), the indicator of liver cell damage, was lowered in those taking HPC, compared to those taking the placebo. In conclusion, taking HPC prior to drinking alcohol can somewhat reduce alcohol concentration in human blood and liver cell damage.

Study of membrane fouling in the crossflow MBR system (교차흐름 막결합형 생물반응기에서의 막오염 연구)

  • 최중구;김인철;최남석;홍서표;탁태문
    • Proceedings of the Membrane Society of Korea Conference
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    • 1998.10a
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    • pp.150-152
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    • 1998
  • Now the lack of water is serious problem all over the world because of the growth of population and expansion of industrial activities. So wastewater recycle and reuse is essential in many countries. One of the most popular wastewater treatment processes is conventional activated sludge system. In spite of significant degree of treatment rate the biological process has some operational difficulties and capital disadvantages. In conventional activated sludge process, sludge settling condition is getting worse in case of sludge bulking, it is common that overall process fails due to wash-out of biomass causing low concentration of MLSS in the aeration tank. Because of the absence of claifier the membrane bioreactor(MBR) process is less affected by such problems.

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Anti-lipopolysaccharide antibody mitigates ruminal lipopolysaccharide release without acute-phase inflammation or liver transcriptomic responses in Holstein bulls

  • Mizuguchi, Hitoshi;Kizaki, Keiichiro;Kimura, Atsushi;Kushibiki, Shiro;Ikuta, Kentaro;Kim, Yo-Han;Sato, Shigeru
    • Journal of Veterinary Science
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    • v.22 no.3
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    • pp.34.1-34.7
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    • 2021
  • Anti-lipopolysaccharide (LPS) antibody administration has the potential benefits of neutralizing and consequently controlling rumen-derived LPS during subacute ruminal acidosis. Four Holstein bulls were used in this crossover study with a 2-week wash-out period. Anti-LPS antibody (0 or 4 g) was administered once daily for 14 days. Significantly lower ruminal LPS and higher 1-h mean ruminal pH were identified in the 4 g group. However, blood metabolites, acute-phase proteins, cytokines, and hepatic transcriptomes were not different between the two groups. Therefore, anti-LPS antibody administration mitigated ruminal LPS release and pH depression without accompanying responses in acute-phase inflammation or hepatic transcriptomic expression.

The Effect of Emission Control Using Electrolytic Seawater Scrubber

  • An, Suk-Heon
    • Journal of Advanced Marine Engineering and Technology
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    • v.33 no.3
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    • pp.373-377
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    • 2009
  • It is well known that SOx and NOx concentration has a considerable influence on the $N_2O$ emission of the greenhouse gas properties. The quantity of SOx generated during combustion, on fuel specific basis, is directly related to the sulfur content of the fuel oil. However, restricting the fuel oil sulfur content is only a partial response to limiting the overall quantity of SOx emissions, as there remains no over control on the fuel oil consumption other than the commercial pressure which have always directed the attention. This study was carried out as a new basic experiment method of emission control, manly targeted to the vessel. In the experiment, where the scrubbing was achieved through spray tower with high alkaline water made from the electrolysis of seawater, the combined action was to neutralize the exhaust gases (SOx, PM, CO etc.), dilute it, and wash it out. The results showed that SOx reduction of around 95 percent or over could be achieved when using in the high alkaline water, and also leaded to a reduction in the stability of the each pollutant components including the PM (Particulate Matter). The results suggest that the seawater electrolysis method has a very effective reduction of emissions without heavy cost, or catalysts particularly on board.

Study on Runoff Characteristics of Nonpoint Sources during Rainfall in Anyangchun Watershed (안양천 유역의 강우시 비점오염원에 따른 유출부하특성에 관한 연구)

  • Hwang, Byung-Gi;Yu, Se-Jin;Cha, Young-Ki
    • Journal of Environmental Impact Assessment
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    • v.10 no.3
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    • pp.223-234
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    • 2001
  • In this study, we conducted a survey to examine the runoff characteristics of nonpoint sources, which wash off pollutants from the surface of basin during rainfall and affect water pollution of streams. An Anyangchun basin in the region Ewiwang City was selected as a study site. The basin divided into several subbasins such as Wanggokchun, Ojeonchun, and Anyangchun based on the tributaries, which confluence to the main stream of Anyangchun. Four times of field examination had been carried out between July and August of 2000, and water quality data collected from the surveys had been analysed. The survey includes in-situ flow, DO and PH measurements in the outlet of catchment. Laboratory analysis includes BOD, TN, TP. From the result, pollutant by runoff of nonpoint sources were washed out along with stormwater in the beginning of rainfall, and flowed into streams resulted in stream pollution. In case of BOD, the load from Ojeonchun catchment, most of which included urban areas, took up 50% of the total load from the entire watershed. Thus, by the results, it is clear that runoff load by urban nonpoint sources plays an important role in the control and management of nonpoint sources for the watershed.

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Cook Supervisors' Perceived Performance of Safety Management for Vegetables at Korean Food Restaurants in Daegu (대구지역 한식 식품접객업소 조리책임자의 채소류 위생관리 수행도 인식)

  • Lee, Gwi-Sook;Kim, Choon Young;Ryu, Kyung
    • Journal of the Korean Dietetic Association
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    • v.22 no.4
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    • pp.320-339
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    • 2016
  • This study was conducted to identify risk factors to ensure food safety by evaluating cook supervisors' perceived performance of vegetable safety management at Korean food restaurants in Daegu. Recognition of the potential foodborne illness caused by vegetables was 2.60/5 on average. Inspection items with low scores by respondents during food safety inspection by government agencies were "Wash and sanitize vegetables" and "Keep washed and cut vegetables in the refrigerator". As for storage, perceived performance of "Store vegetable in the refrigerator less than 70% of the refrigerator capacity" scored less than 4 out of 5. About 86% of respondents answered "Water-only washing" for vegetable washing. For perceived performance of vegetable cooking, service, and leftover handling, 11 and three items out of 13 were significantly different depending on the size of restaurants and possession of culinary arts certificates, respectively. Based on results, it is necessary to provide food safety training programs for handling vegetables in order to increase knowledge of cook supervisors. In addition, intensive on-site guidance for safety management of vegetables is needed.

Protocol Optimization of Coronary CT Angiography (심혈관 CT 조영술의 프로토콜 최적화)

  • Lee, Hae-Kag;Yoo, Heung-Joon;Lee, Sun-Yeob;Goo, Eun-Hoe;Seok, Jong-Min;Han, Man-Seok;Lee, Kwang-Sung;Cho, Jae-Hwan;Kim, Bo-Hui;Park, Cheol-Soo
    • Journal of the Korean Society of Radiology
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    • v.5 no.2
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    • pp.51-58
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    • 2011
  • This research compared and analyzed the heart rate of the patient in which the LVEF value is 40% less than and normal patient. When as for LVEF 40% or less becomes to each heart rate and LVEF in a relation, we can know that the time to reach 100HU hangs long. Therefore, in patients, that is 40% less than, when setting up the Premonitoring delay, we could know to could give 5 primary solid phrases. It is seen that subsequently an addition injected 40cc as to Saline, to all patients by 4cc/sec speeds after injecting the capacity of Scan time ${\times}$ 4cc + 30cc with 4cc/sec speeds. And HR excludes 80 or greater in 40% less than, the contrast agent shows the large-scale difference. In addition, in 40% less than, it could predict that the time difference was big and the contrast agent was already out in the Left ventricle Wash- when the contrast agent reached 100HU and Scan was started There is a wide difference between under 40% LVEF and normal. when starting scan from low LVEF patients. So, Injection contrast media protocol Should be determined to CCTA. And then In case of low LVEF is recommended to more low Pitch than routine Pitch because we should reduce scan failed in accordance with low LVEF.

Quality Stability of Powdered Soup Using Powder from Oyster Wash Water (굴 세척액 유래 분말수프의 품질안정성)

  • Heu, Min-Soo;Lee, Jung-Suck;Kim, Poong-Ho;Cho, Moon-Lae;Ahn, Hwa-Jin;Shim, Hyo-Do;Kim, Jin-Soo;Kim, In-Soo
    • Applied Biological Chemistry
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    • v.44 no.4
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    • pp.224-229
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    • 2001
  • This study was carried out to examine the quality stability of powdered soup using powder from oyster wash water (PSW). To compare the quality stability, powdered soup from oyster hot-water extracts (PSE) was also prepared by mixing hot-water extract powder (15 g), table salt (5 g), cream powder (19 g), milk replacer (12 g), wheat flour (20 g), corn flour (15 g), starch (5 g), glucose (7.5 g), and onion powder (1.5 g). In preparing PSW, powder from oyster wash water, instead of powder from oyster hot-water extracts, was added and other additives were the same proportion as PSE. The PSW and PSE were packed with laminated film bag (OPP,$20\;{\mu}m$; PE, $20{\mu}m$; paper, $45\;g/m^3$; PE, $20\;{\mu}m$; Al, $7\;{\mu}m$; PE, $20\;{\mu}m$), and then stored at ambient temperature for 12 months. The moisture content, water activity, peroxide value, and fatty acid composition showed little changes during storage of the PSW, The pH, volatile basic nitrogen content, and brown pigment formation increased slightly, while white index decreased slightly during storage of PSW. No significant difference was observed in the changes of food components between PSW and PSE during storage. According to a sensory evaluation, the change in quality of PSW was negligible during 12 months of storage. From the results of the chemical experiment and sensory evaluation, PSW packed with laminated film bag (OPP, $20\;{\mu}m$; PE, $20\;{\mu}m$; paper, $45\;g/{\mu}m$; PE, $20\;{\mu}m$) was revealed to be preserved in good quality during 12 months of storage.

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