• Title/Summary/Keyword: concentration control

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Effects of Taraxaci Herba on Surgically Induced Endometriosis in Rats (포공영(浦公英) 추출물이 자궁내막증 유발 백서(白鼠)에 미치는 영향)

  • Lim, Eun-Mee;Lee, Eun;Park, Jun-Sik
    • The Journal of Korean Obstetrics and Gynecology
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    • v.19 no.3
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    • pp.69-82
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    • 2006
  • Purpose : Taraxaci Herba is a herb with an effect on extravasated blood and is widely used in gynecology. This study examined the effects of Taraxaci Herba on endometriosis. Methods : Rats with surgically induced endometriosis were given an oral dose of Taraxaci Herba for 40 days. The size of the ectopic uterine implants at the serosal wall and the concentration of progesterone, estradiol, tumor necrosis factor-${\alpha}$(TNF-${\alpha}$) and interleukin(IL)-2, 4, 6, and 10 in the blood were examined and compared with the control group. Results : The size of the ectopic uterine implants in the treated group was much smaller than that in the control group. The estradiol concentration was significantly lower in the experimental group than in the control group. The IL-10 level was higher and the TNF-${\alpha}$, IL-2 and IL-4 concentration were lower in the experimental group than in the control group and there was statistically significant difference. There was no significant difference in the IL-6 level between the experomental and the control group. Conclusion : These results indicate that Taraxaci Herba reduces the size of ectopic uterine implants at the serosal wall and inhibits the growth of ectopic uterine implants. This suggests that Taraxaci Herba is an effective treatment for endometriosis.

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A Study of the Effective Weed Control by Herbicides in a Nursery and Forests(I) -Weed Control in a Nursery for Silviculture and Landscape Architecture- (묘포장 및 산지에서 제초제를 이용한 효과적인 잡초방제에 대한 연구(I) -조림.조경용 수묘포장의의 제초관리-)

  • 서병수;김세천;박종민;이창헌
    • Journal of the Korean Institute of Landscape Architecture
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    • v.27 no.1
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    • pp.29-38
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    • 1999
  • Three kinds of soil surface applied herbicides and three kinds of foliage applied herbicides were used to study weed control effect, appropriate concentration, phyto-toxicity against trees and economical efficiency of weed control on trees, Pinus thunbergii, Picea abies, Chamaecyparis obtusa, Quercus accutissima, and Fraxinus rhynchopylla in a nursery. The results were obtained as follows; 1.The control effect of the soil surface applied herbicides showed that the three herbicides; Alachlor, Pendimenthalin and Simazine were alike in their holding effect of weed development, and the sensibility of weed spp. on the herbicides was different. The mean control effect was 58~89%. 2. The weed control effect of the foliage applied herbicides demonstrated that Paraquat dichloride was the best of 84~95% and followed by Glufosnate ammonium and Glyphosate. Especially when the half of its standard amount was treated, the effect of Paraquat dichloride was higher than the other herbicides. 3. Generally, the weed control effect became better as the concentration of the herbcide getting higher. As the concentration of the herbicide got higher, the restraining effect of weed development was continued for a long time in the soil surface applied herbicides, while the weed control effect appeared earlier in the foliage applied herbicides. 4. As the result of the soil surface treatments, 20% of short seedings of Fraxinus rhychopylla treated with twice amount of standard Alachlor died and the rest seeding showed low growth. In the other treatments, there was neither harmful effect of herbicides on the seedings nor growth decrease of them compared to those weeded by men. 5. When treated with foliage applied herbcides, leaves were partially of and discolorated in most treatments. About 0.4~6.2% of Fraxinus thynchopylla, which had short seedings died, and there was no difference in growth with the other treatments. 6. The herbicides showed better economical efficiency over 68% than weed control by men. Especially, Alachlaor of the soil surface applied herbicides showed the highest efficiency(77.6%), while Paraquat dichloride of the foliage applied herbicides was the best(70.3%)..

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Statistical process control of dye solution stream using spectrophotometer

  • Lee, Won-Jae;Cho, Gyo-Young
    • Journal of the Korean Data and Information Science Society
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    • v.21 no.6
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    • pp.1289-1303
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    • 2010
  • The need for statistical process control to check the performance of a process is becoming more important in chemical and pharmaceutical industries. This study illustrates the method to determine whether a process is in control and how to produce and interpret control charts. In the experiment, a stream of green dyed water and a stream of pure water were continuously mixed in the process. The concentration of the dye solution was measured before and after the mixer via a spectrophotometer. The in-line mixer provided benefits to the dye and water mixture but not for the stock dye solution. The control charts were analyzed, and the pre-mixer process was in control for both the stock and mixed solutions. The R and X-bar charts showed virtually all of the points within control limits, and there were no patterns in the X-bar charts to suggest nonrandom data. However, the post-mixer process was shown to be out of control. While the R charts showed variability within the control limits, the X-bar charts were out of control and showed a steady increase in values, suggesting that the data was nonrandom. This steady increase in dye concentration was due to discontinuous, non-steady state flow. To improve the experiment in the future, a mixer could be inserted into the stock dye tank. The mixer would ensure that the dye concentration of the stock solution is more uniform prior to entering the pre-mixer ow cell. Overall, this would create a better standard to judge the water and dye mixture data against as well.

Growth of Three Sprout Vegetables and Absorption Characteristics of Vanadium according to Jeju Water Concentration (제주 Water 농축에 따른 3종 새싹채소의 생장 및 Vanadium의 흡수 특성)

  • Park, Sung-Hwan;Yun, Ji-Hyun;Lee, Jin-Ha;Lee, Ok-Hwan;Cho, Ju-Hyun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.7
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    • pp.816-821
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    • 2017
  • Vanadium is a trace mineral present in dietary sources, most commonly vegetables. The aim of this study was to investigate the growth and vanadium absorption characteristics of Brassica napus L., Fagopyrum esculentum, and Hordeum vulgare L. using different Jeju water concentrations. The growth of three sprout vegetables and absorption characteristics of vanadium were different depending on Jeju water concentration containing vanadium. In the case of B. napus L. and H. vulgare L., germination rate was inhibited by increasing Jeju water concentration, whereas in F. esculentum, the best germination rate (60.7 %) was obtained at 40 times concentration of Jeju water (vanadium, 1.34 mg/L). For the sprout growth, growth of shoots increased with increasing Jeju water concentration, but root growth was gradually inhibited by increasing Jeju water concentration. For the absorption of vanadium by Jeju water concentration, vanadium was not detected in H. vulgare L. The vanadium contents of B. napus L. and F. esculentum were 4.2 mg/kg and 2.9 mg/kg at 10 times concentration of Jeju water (vanadium, 0.46 mg/L), respectively.

Effects of Administration of CCl$_{4}$ on Liver Function in Rats 1. Clinical Signs and Blood Chemical Values (사염화탄소(CCI$_{4}$)의 투여가 쥐의 간기능에 미치는 영향 1. 임상증상 및 혈액화학치)

  • 강정부;이은석;허주헝
    • Journal of Veterinary Clinics
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    • v.14 no.2
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    • pp.268-272
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    • 1997
  • This study was performed to estimate the clinical signs and biochemical para meters of indicator on acute hepatic injury induced by the administration of CCl$_{4}$ in rats. Minor behavioral changer brittleness of skin hair and decreased volume of water and food intake were observed in rats after 2 hours of $CCl_{4}$ administration compared to control group. Concentration of serum albumin has shown lower than that of control group. However concentration of total bilirubin has shown higher than that of control group. As times go onto serum LDH activity was significantly increased compared to control Broup. Serum CPK activity hasn't shown change compared to control group. Passive hemagglutination that of afetoprotein was shown negative reaction in all the treatment groups and control group.

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Effects of Administration of 2,2'-Azobis(2-amidinopropane) Dihydrochloride(AAPH) on Liver Function in Rats 1. Clinical Signs and Blood Chemical Values (2,2'-Azobis (2- amidinopropano) Dihydrochloride(AAPH)의 투여가 쥐의 간기능에 미치는 영향 1. 임상증상 및 혈액 화학치 소견)

  • 강정부;손호상;김철호
    • Journal of Veterinary Clinics
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    • v.15 no.1
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    • pp.75-78
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    • 1998
  • This study was performed to estimate the clinical signs and changes of biochemical parameters in rats with hepatic injury induced by the administration of 2, 2'-azobis(2- amidinopropane)dihydrochloride (AAPH) . Minor behavioral change, brittleness of skin hair and decreased volume of water and feed intake were observed in ra% 2 hours after AAPH administration compared to control group. Concentration of serum albumin showed lower than that of control group. However, concentration of total bilirubin has shown higher than that of control group. As time goes on, . serum LDH activity increased significantly compared to control group, but senun CPK activity did not change compared to control group. Passive hemanglutination of $\alpha $-fetoprotein was negative in all the treaDent groups and control group.

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The Comparison of Blood Retinol and $\alpha$-Tocopherol Concentrations between Diarrhea and Normal Calves (정상과 설사증 송아지에서 혈중 retinol과 $\alpha$-tocopherol의 비교)

  • Suh, Jung-Won;Yun, Young-Min;Kim, Byung-Sun;Choi, Gui-Cheol;Han, Chang-Hoon;Lee, Kyoung-Kap
    • Journal of Veterinary Clinics
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    • v.24 no.4
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    • pp.537-541
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    • 2007
  • The purpose of this study is to examine and compare the concentrations of blood retinol and $\alpha$-tocopherol in normal and diarrhea calves. The subjects of the experiments are from three groups. Each group consists of 5 calves(diarrhea, treatment and control group). The CBC, serum chemistry, serum retinol and a-tocopherol concentrations were estimated in each group. Blood retinol concentration was $13.3{\pm}7.0{\mu}g/100ml$ in diarrhea group, $31.5{\pm}6.9{\mu}g/100ml$ in treatment group and $28.1{\pm}11.8{\mu}g/100ml$ in the control group. The blood concentration in diarrhea group was significantly lower than that of the control group in the case of retinol(p<0.05). However, there were no significance between the treatment poop and the control group. The $\alpha$-tocopherol concentration in blood was $266.0{\pm}127.6{\mu}g/100ml$ in diarrhea group, $432.2{\pm}172.7{\mu}g/100ml$ in the treated group and $579.3{\pm}145.8{\mu}g/100ml$ in the control group. In the case of $\alpha$-tocopherol, the laboratory group were significantly lower than the control group(p<0.05), except for the treatment group. As in retinol concentration there were no significance between treatment group and the control group. In the test of CBC, PCV was significantly lower in the group with diarrhea than the control group(p<0.05). Fibrinogen concentrations in diarrhea calves were significantly higher than the treatment and control group. In conclusion, the blood retinol and $\alpha$-tocopherol concentration in diarrhea calves are lower than normal calves. Medication of retinol and $\alpha$-tocopherol on calves with diarrhea is recommended.

열수화법으로 성장시 성장 온도에 따른 ZnO 나노 구조의 표면 형상 변화

  • Bae, Yeong-Suk;Kim, Dong-Chan;Jo, Hyeong-Gyun
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2009.11a
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    • pp.238-238
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    • 2009
  • In this work, we investigated the effect of the Zn complex concentration and growth temperature on the growth of ZnO nanorod by hydrothermal method. The ZnO nanorods were performed at condition of the various Zn complex concentration and growth temperature, 0.02 ~ 0.08 M and 60 ~ 80 $^{\circ}C$, respectably. We found from the SEM results that the diameter and length of ZnO nanorods were with increasing the growth temperature and Zn complex concentration. However, the growth condition in the two parameters wasmore than sensitive compared to Zn complex concentration on increasing the growth rate. From photoluminescence(PL) analysis, the strong band-edge emission for ZnO nanorod grown at 80 $^{\circ}C$ with 0.08 M indicated the fine crystallinity. Therefore, the diameter and length of ZnO nanorods have been able to control through the control of front growth parameters. Also, these ZnO nanorods grown low temperature will be available as building block for transparence flexible device applications.

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Effect of Water Extract from Stem Bark of Rhus verniciflua Stokes on the Concentrations of Lipid and Lipid Peroxidation in Mice (옻나무 수피 추출물이 마우스의 지질농도 및 지질과산화에 미치는 영향)

  • 차재영;조영수
    • Journal of Life Science
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    • v.10 no.5
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    • pp.467-474
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    • 2000
  • Male mice (ddY strain) were fed a laboratory chow diet containing the water extract from stem bark of Rhus verniciflua Stokes (RVS) for 14 days. There were no significant difference in body weight gain, feed intake, the hepatic lipid profile and serum total cholesterol and phodpholipid concentrations. The concentration of triglyceride in serum was significantly lower in the RVS group than that in the control group. The concentration of high-density-lipoprotein cholestrol in serum was significantly higher in the RVS group than that in the control group. The methanol extract from RVS stem bark effectively inhibited the formation of thiobarbituric acid-reactive substances as a marker of lipid peroxidation of liver microsomes in a concentration-dependent manner. This study showed that the water extract from stem bark of RVS decreased the serum triglyceride concentration and methanol extract has an antioxidative activity.

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Coating formation of water supply pipes by inhibitor and water quality improvement effect (부식억제제에 의한 상수도관의 피막 형성 및 수질개선 효과)

  • Lim, Jae-Cheol;Kim, Jin-Keun;Koo, Ja-Yong
    • Journal of Korean Society of Water and Wastewater
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    • v.26 no.1
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    • pp.97-106
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    • 2012
  • To investigate the application of corrosion inhibitor on water supply pipes, turbidity, magnitude of corrosion, composition of scale and concentration of metals from an old steel pipe were analysed under inhibitor addition. The concentration of turbidity, iron and copper from the pipes under inhibitor application was 12 ~ 14% of the case which no inhibitor was applied, which suggests the application of inhibitor was very effective for internal corrosion control. In addition, SEM, EDX, XRD and XRF test results showed that application of inhibitor was effective for the decrease of iron concentration and increase of oxygen, phosphorus and calcium concentration, which suggested the existence of protective layer. Therefore, the occurrence of red water will be significantly decreased when inhibitor was applied to the old steel pipes.