• Title/Summary/Keyword: Reducing treatment

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Comparison of Biological Activities of Synurus deltoides (Aiton) Nakai Under Different Shading Conditions

  • Jiang, Yunyao;Noh, Heesum;Wang, Myeong-Hyeon
    • Korean Journal of Plant Resources
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    • v.26 no.6
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    • pp.686-694
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    • 2013
  • Shade treatment of Synurus deltoides (Aiton) Nakai was carried out with 0, 35, and 55% shading net, and samples were marked as no shade, 35% shade, and 55% shade, respectively. We examined in vitro antioxidant and anti-inflammatory capacities using a 1,1-diphenyl-2-2-pricylhydrazyl (DPPH) radical scavenging assay, a reducing power assay, a total antioxidant assay, a metal chelating assay, a superoxide radical scavenging assay, and a nitric oxide inhibition assay. As a result, no shade and 35% shade possessed higher DPPH radical scavenging activity and reducing power ability than that of 55% shade. Notably, no shade had significantly higher total phenolic and flavonoid contents than those in the other samples. No shade exhibited significantly higher total antioxidant activity than that of 35% shade and 55% shade. However, the chelating ability of 55% shade was significantly greater than that of no shade and 35% shade; 55% shade also showed significantly higher anti-inflammatory capacity than that of no shade or 35% shade.

점토로부터 철불순물의 생물학적 제거에 미치는 탄소원의 영향

  • Lee, Eun-Young;Cho, Kyung-Suk;Ryu, Hee-Wook;Bae, Moo
    • Microbiology and Biotechnology Letters
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    • v.25 no.6
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    • pp.552-559
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    • 1997
  • Fe (III) impurities in clay could be microbially removed by inhabitant dissimilatory Fe (III) reducing microorganisms. Insoluble Fe (III) in clay particles was leached out as soluble reductive form, Fe (II). The microorganisms removed from 10 to 45% of the initial Fe (III) when each sugar was supplemented to be in ranges of 1 - 5 % (w/w; sugar/clay). The microorganisms reduced 2.1 - 12.8 mol of Fe (III) per 100 mol of carbon in sugars metabolized when sugars such as glucose, maltose, and sucrose were used as sole carbon source. Bacillus sp. IRB-W and Pseudomonas sp. IRB-Y were isolated from the enrichment culture of the clay. The isolates were considered to participate in metabolizing organic compounds to fermentative intermediates with relatively little Fe (III) reduction at initial Fe (III) reduction process. By the microbial treatment, the whiteness of the clay was increased form 63.20 to 79.64, whereas the redness was obviously decreased form 13.47 to 3.55. This treatment did not cause any unfavorable modifications in mineralogical compositions of the clay.

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Quality and Characteristics of Manufacturing Sunsik with Edible Insect(Mealworm) (식용곤충(갈색거저리)을 첨가한 선식의 품질특성)

  • Park, Ki-Hong;Kim, Gun young
    • Culinary science and hospitality research
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    • v.24 no.1
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    • pp.13-23
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    • 2018
  • This study aimed to investigate the characteristics of 3 pre-treatment of mealworm(Tenebrio molitor), and offer basic research data through appropriate pre-treatment method based on the component analysis result. This study was preparing the control group sample No.0(not contain mealworm), and the other sample (Sample No.1,2,3) was using the mealworm prepared in each of the three methods. By using the sample, this study conducted an inspection for component analysis, mineral contents, pH, color value, total amount polyphenols, DPPH radical scavenging activity, reducing power, acceptance test. Each experiments are three times repeated and validated following the one-way ANOVA analysis to verify a significant difference. Acceptance test conducted by 50 consumers indicate consumption decision for sunsik. using the seven point scale, assessment for appearance, flavor, taste, texture, overall acceptance. The research findings showed that sample containing sauted mealworm(SE2) is higher preference and significant in antioxidant activity(total amount polyphenols, DPPH radical scavenging activity, reducing power). Therefore, it is better to use sauted. The result of this study suggest that sauted mealworm is good ingredient for consumer acceptability and functionality of sunsik. According to results of the study, it is suggested to make better use of food, and provide food developer with meaningful date for market targeting. In addition, this study also provides the information for improving awareness of edible insect.

Anion co-doped Titania for Solar Photocatalytic Degradation of Dyes

  • Lee, Young-Seak;Kim, Sang-Jin;Venkateswaran, P.;Jang, Jeen-Seok;Kim, Hyuk;Kim, Jong-Gyu
    • Carbon letters
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    • v.9 no.2
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    • pp.131-136
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    • 2008
  • In order to investigate the effect of doping C, N, B and F elements on $TiO_2$ for reducing the band gap, the heat treatment of $TiO_2$ was carried out with tetraethylammonium tetrafluoroborate. Through XRD and XPS analysis, the C, N, B and F doped anatase $TiO_2$ was confirmed. According to the increase of temperature during treatment, the particle size was increased due to aggregation of $TiO_2$ with elements (B, C, N and F). To investigate the capacity of photocatalyst for degradation of dye under solar light, the degradation of acridine orange and methylene blue was conducted. The degradation of dyes was carried out successfully under solar light indicating the effect of doping elements (B, C, N and F) on $TiO_2$ for reducing the band gap effectively.

Effects of Aroma-foot-reflexology on Premenstrual Syndrome, Dysmenorrhea and Lower Abdominal Skin Temperature of Nursing Students (아로마발반사요법이 간호학생의 월경전증후군, 생리통 및 하복부 피부온도에 미치는 효과)

  • Lee, Young-Mee
    • Korean Journal of Adult Nursing
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    • v.23 no.5
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    • pp.472-481
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    • 2011
  • Purpose: The aim of the study was to identify the effects of aroma-foot-reflexology on premenstrual syndrome, dysmenorrhea and lower abdominal skin temperature of nursing students. Methods: This study used a pretest-posttest quasi-experimental study design. The participants were divided into two groups, a control group with 37 students and a treatment with 24 students. A 35 minute three times a week aroma-foot-reflexology was carried out for the treatment group. The data were analyzed using SPSS/WIN 17.0 program. Results: The results showed that aroma-foot reflexology was significantly effective in reducing premenstrual syndrome and dysmenorrhea, and raised lower abdominal skin temperature of the students. Conclusion: The results of this study indicated that aroma-foot-reflexology is an effective nursing intervention in reducing premenstrual syndrome and dysmenorrhea and in improving lower abdominal skin temperature. It is, therefore, recommended that the aroma-foot reflexology should be a clinical practice as an effective nursing intervention to reduce premenstrual syndrome and dysmenorrhea and to improve lower abdominal skin temperature of nursing students.

Effects of Solar Heating for Control of Pink Root and Other Soil-borne Diseases of Onions

  • Lee, Chan-Jung;Lee, Jong-Tae;Moon, Jin-Seong;Ha, In-Jong;Kim, Hee-Dae;Kim, Woo-Il;Cheon, Mi-Geon
    • The Plant Pathology Journal
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    • v.23 no.4
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    • pp.295-299
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    • 2007
  • These experiments were carried out to examine efficacy of soil solarization for control of pink root disease by means of mulching with transparent polyethylene sheets in the hot season. The effects of soil solarization on incidence of pink-root disease caused by Pyrenochaeta terrestris and on onion growth and on populations of soil fungi were investigated. Solarization was dramatically effective in reducing pink root incidence in onion seedling and harvested onion bulb. A 30-day and 40-day solarization treatment significantly improved seedling survival and increased yield of 'Changnyeong-deago' onion while decreasing incidence of pink root. Populations of soil fungi from fields planted to onion were assayed on selective media. Solarization treatment was effective in reducing populations of P. terrestris, Pythium spp., and Rhizoctonia sp. in soil. Increase of yield of onion bulbs was associated with control of soil-borne pathogenic fungi. Soil solarization had beneficial effects on yield, bulb diameter, or incidence of pink root.

Clinical study on one case of a patient with chronic PID (만성골반염(慢性骨盤炎) 환자에 대한 치험일례(治驗一例))

  • Seo, Ji-Young;Kim, Yoon-Sang;Lim, Eun-Mee
    • The Journal of Korean Obstetrics and Gynecology
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    • v.15 no.4
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    • pp.218-227
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    • 2002
  • Pelvic Inflammatory Disease(PID) is a spectrum of inflammatory disorders of the female genital tract involving at least the endrometrium and may include the fallopian tubes, ovaries, and pelvic cavity. Women with PID acutely experience pain and are at risk for sepsis; however, the long-term complications such as chronic pelvic pain, organic changes like chronic salpingitis, adhesions, etc., and the significant increases in ectopic pregnancy and infertility are more important and hard to control. This study is about one patient who has chronic PID with inflammatory pelvic mass. The patient was treated with retention enema therapy which use herbs effective for reducing inflammation, resolution abdominal mass, promoting blood circulation. Also, treated with herbal medication of Danchisoyosan(丹梔逍遙散) and Moxibution at Zhongwan(中脘), Guanyuan(關元). After total treatment for three months, the patient's symptoms are improved and the size of inflammatory pelvic mass is reduced. This results indicates that the combination treatment, especially the retention enema therapy is effective on reducing symptoms of PID and the size of secondary inflammatory organic changes.

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Improving the Reactivity and Harmlessness of Recalcitrant Contaminants by Reduction-oxidation-linked Process (환원-산화 연계처리를 통한 니트로벤젠의 반응성 향상 및 무해화 연구)

  • Kwon, Hee-Won;Hwang, Inseong;Kim, Young-Hun
    • Journal of Environmental Science International
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    • v.29 no.12
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    • pp.1205-1211
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    • 2020
  • In this study, the applicability of reduction-oxidation-linked treatment was evaluated for nitrobenzene and a by-product by analyzing the reaction kinetics. Nitrobenzene showed very low reactivity to persulfate that was activated using various methods. Nitrobenzene effectively reacted through the reduction process using Zero-Valent Iron (ZVI). However, aniline, a toxic substance, was produced as a by-product. Reduction-oxidation-linked treatment is a method that can allow the oxidative degradation of aniline after reducing nitrobenzene to aniline. The experimental results show improved reactivity and complete decomposition of the by-product. Improved reactivity and decomposition of the by-product were observed even under conditions in which the reduction-oxidation reaction was induced simultaneously. No activator was injected for persulfate activation in the process of reducing oxidant linkage, and the activation reaction was induced by ferrous iron eluted from the ZVI. This indicates that this method can be implemented relatively simply.

Antioxidant Activities and the Effect of Reducing Serum Alcohol Concentration of Lentinus edodes (표고버섯의 항산화능과 알코올분해능에 미치는 영향)

  • Kim, Chae-Hyun;Jeong, Jong-Gil
    • The Korea Journal of Herbology
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    • v.24 no.4
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    • pp.159-164
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    • 2009
  • Objectives : The purpose of this study is to evaluate antioxidant activities and reducing serum alcohol concentration of extract of Lentinus edodes on the alcohol administered rats. Methods : Antioxidant effect was measured by total phenolic compound and DPPH-radical scavenging activity of extract of Lentinus edodes in vitro. Blood alcohol concentration, aldehyde concentration, malondialdehyde concentration, glutathion concentration were measured in vivo. Results : The extract of Lentinus edodes increased DPPH-radical scavenging activity dose-dependently. The water extract with boiling water showed lower antioxidant activity and phenolic content than 70% ethanol extract in vitro. Blood alcohol concentration was significantly reduced by pre-treatment of ethanol extract of Lentinus edodes. The effect was more significant than commercial product used as a positive control. Conclusions : This study suggest that Lentinus edodes can be a potential nature resource for the management of ethanol toxicity although the mechanism of action involved in the treatment remains to be explored.

Economic implications of optimal operating conditions in a full-scale continuous intermittent cycle extended aeration system (ICEAS) (실규모 연속유입간헐폭기 공정(ICEAS)에서 최적운전조건이 경제성에 미치는 영향)

  • Yong-jae Jeong;Yun-Seong Choi;Seung-Hwan Lee
    • Journal of Korean Society of Water and Wastewater
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    • v.38 no.1
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    • pp.29-38
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    • 2024
  • Wastewater management is increasingly emphasizing economic and environmental sustainability. Traditional methods in sewage treatment plants have significant implications for the environment and the economy due to power and chemical consumption, and sludge generation. To address these challenges, a study was conducted to develop the Intermittent Cycle Extended Aeration System (ICEAS). This approach was implemented as the primary technique in a full-scale wastewater treatment facility, utilizing key operational factors within the standard Sequencing Batch Reactor (SBR) process. The optimal operational approach, identified in this study, was put into practice at the research facility from January 2020 to December 2022. By implementing management strategies within the biological reactor, it was shown that maintaining and reducing chemical quantities, sludge generation, power consumption, and related costs could yield economic benefits. Moreover, adapting operations to influent characteristics and seasonal conditions allowed for efficient blower operation, reducing unnecessary electricity consumption and ensuring proper dissolved oxygen levels. Despite annual increases in influent flow rate and concentration, this study demonstrated the ability to maintain and reduce sludge production, electricity consumption, and chemical usage. Additionally, systematic responses to emergencies and abnormal situations significantly contributed to economic, technical, and environmental benefits.