• Title/Summary/Keyword: 세정수

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The effects of Family Leisure Ritual and Positive·Negative Outcomes of Family Leisure Ritual on Marital Satisfaction with the Married (기혼자의 가족여가의례와 가족여가의례 후 긍정적·부정적 효과가 결혼만족도에 미치는 영향)

  • Bae, Jae-Hyun;Park, Se-Jeong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.11
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    • pp.168-176
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    • 2016
  • This study investigated the effects of family leisure ritual and positive negative outcomes of family leisure ritual on marital satisfaction of the married. A survey questionnaire was completed by 216 married people. SPSS Win program was used to perform MANOVA and Hierarchical Regression Analysis. The main study findings are as follows. (1)In the family leisure rituals, the main activity was 'going out in the suburbs' and the main difficulty was 'lack of mutually available time for all family members'. (2)The family leisure ritual was significantly different according to age. Over 30 years participated in more family leisure ritual than over 50 years. The positive negative outcomes of family leisure ritual were significantly different according to gender. Men evaluated more positive outcomes of family leisure ritual than women whereas women evaluated more negative outcomes of family leisure ritual than men. (3)The family leisure ritual and positive negative outcomes of family leisure ritual affected marital satisfaction. This study indicated that it is necessary to make a positive outcome effort of family leisure ritual for increasing marital satisfaction in the married.

Serum interleukin-6, tumor necrosis factor-α and adiponectin levels in Kawasaki disease (가와사키병 환자의 혈청 interleukin-6, tumor necrosis factor-α, Adiponectin 치에 대한 연구)

  • An, Jung;Kim, Han Gyu;Sohn, Sejung;Hong, Young Mi
    • Clinical and Experimental Pediatrics
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    • v.53 no.1
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    • pp.41-47
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    • 2010
  • Purpose : Adiponectin is an endogenous modulator of vascular remodeling that suppresses vascular inflammation. However, the role of adiponectin in Kawasaki disease (KD) has not been elucidated. The purpose of this study is to investigate the correlation between serum adiponectin level and several parameters, such as interleukin (IL)-6, tumor necrosis factor $(TNF)-{\alpha}$, lipid profile, and C reactive protein (CRP), and to clarify the association between adiponectin and cardiac function. Methods : Twenty-two KD patients (22 patients in acute phase and 20 patients in subacute phase) were enrolled in the study group. The control group consisted of 31 subjects (13 febrile patients and 18 healthy children). Both groups underwent blood sampling and tissue Doppler imaging (TDI). Results : CRP was significantly increased in the KD group compared with the control group. There were no significant differences in serum $TNF-{\alpha}$, IL-6, and adiponectin levels between groups. However, a negative correlation was found between adiponectin level and CRP level or platelet count. Systolic myocardial velocity and A myocardial velocity measured by TDI were decreased significantly in the acute KD group compared with the subacute KD group and control group. Positive correlations were found between adiponectin level and systolic myocardial velocity or A myocardial velocity. Conclusion : In acute KD patients, low adiponectin level was related to severe inflammatory reactions and decreased left ventricular functions.

A combined sewer design method using tractive force considering wastewater flow on non-rainy days and its application for improvement methods of sewer (청천시 오수량을 고려한 합류식 하수도 소류력 설계법과 이를 활용한 하수관거 개보수방안)

  • Ji, Hyon Wook;Yoo, Sung Soo;Song, Homyeon;Kang, Jeong-Hee
    • Journal of Korean Society of Water and Wastewater
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    • v.34 no.3
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    • pp.211-220
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    • 2020
  • When domestic sewage and rainwater runoff are discharged into a single sewer pipe, it is called a "combined sewer system." The sewage design standards in Korea specify the flow velocity based only on the volume of rainfall; therefore, sedimentation occurs on non-rainy days owing to the reduced flow rate and velocity. This sedimentation reduces the discharge capacity, causes unpleasant odors, and exacerbates the problem of combined sewer overflow concentration. To address this problem, the amount of sewage on non-rainy days, not just the volume of rainfall, should also be considered. There are various theories on sedimentation in sewer movement. This study introduces a self-cleansing velocity based on tractive force theory. By applying a self-cleansing velocity equivalent to the critical shear stress of a sand particle, sedimentation can be reduced on non-rainy days. The amount of sewage changes according to the water use pattern of citizens. The design hourly maximum wastewater flow was considered as a representative value, and the velocity of this flow should be more than the self-cleansing velocity. This design method requires a steeper gradient than existing design criteria. Therefore, the existing sewer pipelines need to be improved and repaired accordingly. In this study, five types of improvement and repair methods that can maximize the use of existing pipelines and minimize the depth of excavation are proposed. The key technologies utilized are trenchless sewer rehabilitation and complex cross-section pipes. Trenchless sewer rehabilitation is a popular sewage repair method. However, it is complex because the cross-section pipes do not have a universal design and require continuous research and development. In an old metropolis with a combined sewer system, it is difficult to carry out excavation work; hence, the methods presented in this study may be useful in the future.

Effect of pH on Physical Properties of Triethanolamine-Ester Quaternary Ammonium Salt Cationic Surfactant System (수용액의 pH가 Triethanolamine-Ester Quaternary Ammonium Salt 양이온 계면활성제 시스템의 물성에 미치는 영향에 관한 연구)

  • Kim, JiSung;Lim, JongChoo
    • Applied Chemistry for Engineering
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    • v.20 no.5
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    • pp.479-485
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    • 2009
  • In this study, basic physical properties were measured for ASCO EQ85 cationic surfactant of triethanolamine-ester quaternary ammonium salt and effect of pH on softening performance on fabrics was investigated using zeta potential measurement and adsorption experiment by quartz crystal microbalance. The CMC of the surfactant was near $3{\times}10^{-3}mol/L$ and the surface tension at CMC was about 40 mN/m. The interfacial tension measurement between 1 wt% aqueous solution and n-dodecane measured by spinning drop tensiometer showed that interfacial tension slightly increased with an increase in pH but the equilibration time was not affected by pH. The surfactant adsorption was found to increase with an increase in surfactant concentration and was also affected by pH of surfactant solution. The friction factor for fabrics treated with ASCO EQ85 surfactant was shown to increase with pH and better softening effect was found under acidic conditions. Half-life for foams generated with ASCO EQ85 surfactant solution increased with pH, which indicated an increase in foam stability with pH.

Studies on the scouring of raw silk by the application of bacterial enzyme of sericinase -(Part 1.) Isolation and selection of proper bacteria and some studies of properties of this bacterial enzyme- (세균성(細菌性) Sericin 분해(分解) 효소(酵素)에 의(依)한 생사정련(生絲精練)에 관(關)한 연구(硏究) -(제1보(第1報)) 유용세균(有用細菌)의 분리(分離) 세정(選定) 및 생성(生成) Sericinase 의 효소학적(酵素學的) 성질(性質)에 대(對)하여-)

  • Ki, Woo-Kyung;Seu, Jung-Hwn
    • Applied Biological Chemistry
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    • v.12
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    • pp.75-81
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    • 1969
  • In order to obtain a method of scouring of raw silk and degumming of cocoon by the appling of bacterial enzyme of sericinase, a strain of proper bacteria was isolated and some properties of the enzyme produced by the isolated bacteria were studied and the following results were obtained. 1) Optimum pH and temperature were indicating 7.5 and $50^{\circ}C$. and on these conditions, the silk fibroin will get no modification at all. 2) Sericinase activity was inhibited by calcium ion in the free incubation but same ions reacted as an activator in the reaction with substrate. So, degumming of Tussah cocoon which contains calcium oxalate in the cocoon layer will be possible by the treatment of this enzyme. 3) This bacterial sericinase never gives any affection to the fibroin layer of the silk. 4) The factors of smooth-surface condition, damage of fibroin layer, touching, luster and degumming effect of the silk resulting by the enzyme treatment were more appropriate than the results of other scouring methods, saponin, alkali and saponin-alkali using methods. We expect to get the same scouring result that compared with the papain or pancreatin were applied.

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Review of property and utilization of oil crop for biodiesel (바이오디젤 원료작물의 기름 및 지방산 특성에 따른 활용방안 고찰)

  • Jang, Young-Seok;Kim, Kwang-Soo;Lee, Yong-Hwa;Cho, Hyeon-Jun;Suh, Sae-Jung
    • Journal of Plant Biotechnology
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    • v.37 no.1
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    • pp.25-46
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    • 2010
  • The demand for fuel and energy resources continues to grow due to increased consumption and emerging economies in all parts of the world. With this increase in demand, crude oil prices in the international market has jumped dramatically. Global warming, which is a consequence of increasing greenhouse gas (GHG) emissions, has become scientific, social, and political concerns. To cope with global warming and energy crisis, cost-competitive biofuels are urgently needed. In addition, development of an infrastructure, which supplies energy stably and diversifies energy resources, as well as new cost-saving technologies should be developed to reduce the costs of producing biofuels. Due to high oleic acid content, rapeseed (Brassica napus L.) is currently the potential feedstock for biodiesel production in temperate zone region and the production and use of rapeseed oil is already commercialized in Europe. In Korea double-cropping (rice and rapeseed) became more prevalent because it reduces competitions from land constraints. Production of rapeseed as a biodiesel feedstock may reduce the influence of rising oil prices and nation's dependence on imported petroleum and increase job opportunities and farm incomes.

NF-${\kappa}$ B Activation and Cyclooxygenase-2 Expression Induced by Toll-Like Receptor Agonists can be Suppressed by Isoliquiritigenin (Isoliquiritigenin의 toll-like receptor agonists에 의해서 유도된 NF-${\kappa}$B 활성화와 cyclooxygenase-2 발현 억제)

  • Park, Se-Jeong;Yang, Seung-Ju;Youn, Hyung-Sun
    • Korean Journal of Food Science and Technology
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    • v.41 no.2
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    • pp.220-224
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    • 2009
  • Toll-like receptors(TLRs) are pattern recognition receptors(PRRs) that recognize pathogen-associated molecular patterns(PAMPs) and regulate the activation of innate immunity. All TLR signaling pathways culminate in the activation of NF-${\kappa}$B, leading to the induction of inflammatory gene products such as COX-2. Licorice (Glycyrrhiza uralensis) has been used for centuries as an herbal medicine. Isoliquiritigenin(ILG), a simple chalcone-type flavonoid, is an active component present in licorice and has been used to treat many chronic diseases. However, the mechanism as to how ILG mediates health effects is still largely unknown. In the present report, we present biochemical evidence that ILG inhibits the NF-${\kappa}$B activation induced by TLR agonists and the overexpression of downstream signaling components of TLRs, MyD88, IKK${\beta}$, and p65. ILG also inhibits TLR agonists-induced COX-2 expression. These results suggest that anti-inflammatory effects of ILG are caused by modulation of the immune responses regulated by TLR signaling pathways.

Changes of the Chemical Constituents and Antioxidant Activity During Microbial-fermented Tea (Camellia sinensis L.) Processing (미생물발효차(Camellia sinensis L.) 제조과정 중의 품질특성 변화)

  • Han, Seon-Kyeong;Song, Yeon-Sang;Lee, Jun-Seol;Bang, Jin-Ki;Suh, Sae-Jung;Cho, Jeong-Young;Moon, Jae-Hak;Park, Keun-Hyung
    • Korean Journal of Food Science and Technology
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    • v.42 no.1
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    • pp.21-26
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    • 2010
  • Microbial-fermented tea (MFT), which is made by microorganisms through fermentation, is a popular beverage in Asia, especially in the Yunnam province, China. In this study, changes of the chemical constituents and antioxidant activity during the manufacturing process of MFT were investigated. MFT were respectively prepared from fresh leaves of three different tea species (Yabukita, Daecha, and Korean wild cultivar) and a processed green tea (Korean wild cultivar). The color of the tea infusions gradually changed to red and yellow as a function of fermentation time. Total nitrogen and caffeine contents were not significantly changed. Whereas, the chlorophyll, tannin, and total catechins contents gradually decreased. Interestingly, the epicatechin and epigallocatechin contents increased up to 25 days of fermentation and then decreased. Change of the chemical constituents of all samples showed the same patterns. The antioxidant activity of MFT from Daecha and Yabukita slightly decreased as increasing fermentation time. However, the range over which the antioxidant activity of MFT from Korean wild cultivar and green tea were not changed. This research suggests that it may be possible to manufacturing possibility of MFT using Korean wild cultivar and processed green tea.

Factors Related to Patients' Satisfaction Level of Treatment Outcome of Oral Malodor (구취치료 후 만족도에 영향을 미치는 예견인자)

  • Lee, Jeong-Yun;Kho, Hong-Seop;Kim, Young-Ku;Chung, Sung-Chang;Lee, Sung-Woo
    • Journal of Oral Medicine and Pain
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    • v.26 no.1
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    • pp.27-38
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    • 2001
  • 본 연구에서는 환자들에 의해 구취와 관련이 있다고 일반적으로 믿어지고 있는 여러 요인들이 치료 후의 환자의 만족도에 미치는 영향에 대해 알아봄으로써 환자의 만족도의 예후를 판단할 수 있는 자료를 마련하고자 하였다. 서울대학교 치과병원 구강진단과에 구취를 주소로 내원한 환자 194명을 대상으로 설문지를 이용하여 구취와 관련성이 있는 것으로 알려져 있는 항목들을 조사하였다. 조사 항목으로는 1) 본인확인가능여부, 2) 타인확인가능 여부, 3) 구취의 기간, 4) 구취의 빈도, 5) 축농증, 6) 비염, 7) 코수술 병력, 8) 콧물이 목뒤로 넘어감, 9) 코막힘, 10) 비호흡 곤란, 11) 구강건조감, 12) 편도선부종, 13) 가래, 14) 신물의 역류, 15) 소화불량, 16) 흡연여부가 포함되었다. 구취의 평가는 portable sulfide monitor인 $Halimeter^{(R)}$(Interscan Co., Chatsworth, CA, USA)를 이용하여 치료 전, 후에 각각 측정하였고, 혀배면의 세정, 치면 세균막 조절, 0.25% $ZnCl_2$ 양치액의 사용을 내용으로 하는 구취의 치료를 시행한 뒤 자신의 구취개선정도에 대해 %로 질문하여 치료 후 만족도를 조사하였다. 각 조사 항목과 치료 후 만족도 사이의 상관관계 및 실제 $Halimeter^{(R)}$ 수치의 개선정도와 만족도 사이의 상관관계를 분석하였으며, Symptom Checklist - 90 Revised(SCL-90R)의 분석결과에 따라 환자를 두 그룹으로 분류하고 두 그룹 사이의 치료 후 만족도의 차이를 조사한 결과 다음과 같은 결론을 얻었다. 1. 본인 및 타인 확인가능여부, 구취가 항상 나는지 여부, 구취의 기간, 축농증, 비염, 코수술 병력, 코막힘, 비호흡 곤란, 콧물이 목뒤로 넘어감, 흡연여부에 따른 치료 후 만족도의 유의한 차이는 없었다. 2. 신물의 역류(p=0.003), 소화불량(p=0.007), 구강건조감(p=0.016), 편도선 부종(p=0.018), 가래(p=0.033)에 따른 치료 후 만족도는 통계적으로 유의한 수준의 차이를 보였다. 3. $Halimeter^{(R)}$ 수치의 개선정도와 만족도 사이의 유의한 상관관계는 관찰되지 않았다(r=0.092, p=0.201).

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The Optimization of Ozone Solubility and Half Life Time in Ultra Pure Water and Alkaline Solution on Semiconductor Wet Cleaning Process (반도체 습식 세정 공정 중 상온의 초순수와 염기성 수용액 내에서 오존의 용해도 최적화)

  • Lee Sang-Ho;Lee Seung-Ho;Kim Kyu-Chae;Kwon Tae-Young;Park Jin-Goo;Bae So-Ik;Lee Gun-Ho;Kim In-Jung
    • Journal of the Semiconductor & Display Technology
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    • v.4 no.4 s.13
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    • pp.19-26
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    • 2005
  • The process optimization of ozone concentration and half life time was investigated in ultra pure water and alkaline solutions for the wet cleaning of silicon wafer surface at room temperature. In the ultra pure water,. the maximum concentration (35 ppm) of ozone was measured at oxygen flow rate of 3 liters/min and ozone generator power over 60%. The half life time of ozone increased at lower power of ozone generator. Additive gases such as $N_2$ and $CO_2$ were added to increase the concentration and half life time of ozone. Although the maximum ozone concentration was higher with the addition of $N_2$ gas, a longer half life time was observed with the addition of $CO_2$. When $NH_4OH$ of 0.05 or 0.10 vol% was added in DI water, the pH of the solution was around 10. The addition of ozone resulted in the half life time less than 1 min. In order to maintain high pH and ozone concentration, ozone was continuously supplied in 0.05 vol% ammonia solutions. 3 ppm of ozone was dissolved in ammonia solutions. The static contact angle of silicon wafer surface became hydrophilic. The particle removal was possible alkaline ozone solutions. The organic contamination can be removed by ozonated ultra pure water and then alkaline solution containing ozone can remove the particles on silicon surface at room temperature.

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