• 제목/요약/키워드: Concetration

검색결과 50건 처리시간 0.024초

세신고가 알레르기성 비염에 미치는 효과 (The anti-allergic effect of SESHINGO(SSG))

  • 김민애;김미보;고우신;윤화정
    • 한방안이비인후피부과학회지
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    • 제21권3호
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    • pp.69-81
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    • 2008
  • Objective : The purpose of this study was find out the anti-allergic effects of SESHINGO on the allergic rhinitis. Methods : Cell viability was evaluated by the MTT assay. Cells were treated with the indicated concentration of SSG. $TNF-\alpha$ concentration was measured from cell supernatants using ELISA method. IL-4 concentration was measured from cell supernatants using ELISA method.$IFN-\gamma$ concentration was measured from cell supernatants using ELISA method. Total RNA was isolated, $TNF-\alpha$ and IL-4 mRNA expression was detected by RT-PCR analysis Total RNA was isolated, COX-1, COX-2 mRNA was analyzed by RT-PCR analysis. Results : 1. $\beta$-hexosaminidase release in RBL-2H3 cells were decresed by SESHINGO attentively. 2. Secreting ration of $TNF-\alpha$was restrained in RBL-2H3 cells by SESHINGO attentively. 3. Secreting ration of IL-4 was restrained in RBL-2H3 cells by SESHINGO attentively 4. Revelation of $TNF-\alpha$ mRNA was decresed in RBL-2H3 cells as concetration. 5. Revelation of.IL-4 mRNA was decresed in RBL-2H3 cells as concetration. 6. Revelation of COX-2 mRNA was decresed in RBL-2H3 cells. Conclusion : According to above results, to evaluate the effect of SSG on the anti-allergic effects.

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반응성 염료에 의한 견날염에 관한 연구(단보) I. 백색발염에 대하여 (A Study on the Silk Printing with Reactive Dye.)

  • 정인모;이용우
    • 한국잠사곤충학회지
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    • 제32권2호
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    • pp.110-112
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    • 1990
  • The influence of the concetration of the discharging agent on some properties of silk fabric dyed with reactive dyes studied. The tensile strength, yellow index and whiteness were investigated as parameters to determine the effect of the dischanging agent. The results were summarized as follows ; 1. The tensile strength and the yellow index decreased with the increase of the concentration of the discharging agents. 2. The whiteness depended on both of the type and the concentration of the discharging agent.

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ASBR에 의한 고농도폐수의 혐기성처리 연구 (Study on the Treatability of High-Concetration Wastewater by ABBR)

  • 김종찬;김요용;김세진;정일현
    • 환경위생공학
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    • 제10권1호
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    • pp.98-105
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    • 1995
  • In the treatment of wastewater or sewage plant sludge with high solid concentration, high rate digestion process in which heating and mixing occur at a time is mainly used, and in the case of wastewater containing solid matter below 1000mg/ℓ the recently developed AF or UASB is developed Recently and commonly utilized. But these processes have weakpoints such as clogging of packing media and need of long period of trial run after microorganism granulation. In this point of view, there are active researches on the ASBR( anaerobic sequence batch reaction ) that is capable of treating of organic matter with reactor that has no packing materials and controlling the inflow time, reaction time sedimentation time and outflow time by time control without loss of microorganisms. The objectives of this study are to evaluate the efficiency of ASBR process according to the reaction time, change of treated water quality and gas output rate in the treatment of wheat plant wastewater.

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분말성제제(粉末性製劑)의 안정성(安定性)에 관(關)한 연구(硏究) -제제중(製劑中)의 Ascorbic Acid의 분해(分解)에 미치는 Talc의 영향(影響)- (Study on the Effect of Talc on the Degredation of Ascorbic Acid in its Diluted Preparation)

  • 정기화;이민화;우종학;김신근
    • Journal of Pharmaceutical Investigation
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    • 제2권1호
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    • pp.52-57
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    • 1972
  • There are many reports on the stability of drugs in powders and various dosage forms. The author studied on the stability of ascorbic acid mixed with talcs. From the result of this experiment, it was considered that talcs markedly accelerated oxidative degredation of ascorbic acid in powders and the acceleration rate depends on the varieties of crude talcs. Iron salts seem to be the principal factor influencing the degradation of ascorbic acid Degradation rate of ascorbic acid mixed with purified talc is significantly slower than that with the crnde talcs. The more the concetration of ascorbic acid is diluted, the faster the degradation rate and degredation rate of Ascorbic acid is the function of tme.

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사용자 참여 디자인을 통한 정보화 오피스 실내디자인 계획 기준 설정에 관한 연구 (A Study on the Interior Design Standards for the Advanced Office based on the User Participication)

  • 윤갑근;김주원
    • 한국실내디자인학회논문집
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    • 제13호
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    • pp.32-36
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    • 1997
  • This study is on the interior design standards which is based on the user participicatiov. The design standards in office planning is relied on user participication with practical method and suitable survey item. On space programming and zonning phase, work relationship, visiting rate and characteristics of work can be applied. The rate to take desk-occupancy, information processing grade, the needs of side work table, visitor table and surplus storage space can help to get workstation unit type. The layout of units can be applied on the grade of communication and work-concetration.

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Sulfamethazine 및 Trimethoprim 이 원유의 TTC 검사에 미치는 경향에 관한 연구 (A Study on Effect of Sulfamethazine and Trimethoprim on T.T.C.(2,3,5-Triphenyl Tetrazolium Chloride) Test in Raw milk)

  • 김영수;황래홍
    • 한국동물위생학회지
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    • 제15권2호
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    • pp.101-108
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    • 1992
  • This study was carried out to investigate the effect of sulfamethazine and trimethoprim on TTC test in raw milk. Ten raw milks which does not contain any antibiotics were collected from milk farms and one hundred twenty raw milks which collected from three raw milk receiving stations and those milk samples were mixed up sulfamethazine and trimethoprim for TTC test. The results were as follows ; 1. Positive reactions of TTC test were shown above the concentration of 3, 000ppm for sulfamethazine and 10ppm for trimethoprim. 2. When the TTC test was conducted with trimethoprim and sulfamethazine mixture, a pair of the concentration of trimethoprim and sulfamethazine shown to positive reaction were 0.1-2, 000ppm, 0.5-1, 000ppm, 1.0-250ppm and 2.0-100ppm, respectively. 3. Of 120 raw milk samples tested, 16 samples(13%) were shown quasi-positive reaction when the trimethoprim at the concetration of 2ppm was added in the samples.

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돼지 분만 시기에 조절에 관하여 III. 자궁 평활근의 운동성에 대한 Histamine의 영향 (Control of Parturition Time on Pig III. Effect of Histamine on Uterine smooth muscle motility)

  • 박상은;황보원;변유성;조광제
    • 한국동물위생학회지
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    • 제18권2호
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    • pp.177-181
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    • 1995
  • The effects of histamine were investigated on the uterine smooth muscle motility in the pig. The results were summarized as fellows : 1. Histamine caused the contraction of the porcine uterine smooth muscle and the contractile responses increased between the concetration of histamine $10^{-8}$ and $10^{-5}$ M with a dose-dependent manner. 2. The contractile response Induced by histamine ($10^{-6}$ M) was completely blocked by pretrevatment with $H_1$-histaminergic receptor blocker, pyrilamine($10^{-6}$ M) 3. The contractile response induced by histamine($10^{-6}$ M) was increased by pretreatment with $H_2$-histaminergic receptor blocker, cimetidine($10^{-6}$ M) From these results, it was concluded that the effects of uterine smooth muscle by histamine were the contraction mediated by $H_1$-histaminergic receptor and the relaxation mediated by $H_2$-histaminergic receptor in pig.

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견의 Tannin처리에 관한 연구(I) -축합형 Tannin을 중심으로- (A Study on Tannin Treatment of Silk Fabrics(I) -Condensed Tannin-)

  • 설정화;최석철
    • 한국염색가공학회지
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    • 제6권1호
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    • pp.19-27
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    • 1994
  • Mimosa and Quebracho are, in general, tanned with leather skin, finished silk fabrics according to temperature, treatment time, tannin concetration, pH, and studies that relation between tannin weighting and various factors. This makes fundamental study on characteristic of tannin treated fabrics. and the results are as fallows : 1. λ$_{max}$ was found at 278.5nm for Mimosa. 279.5nm for Quebracho. Also a stability was good in standing time and heating. 2. The higher tannin treatment temprature was, the better tannin weighting effect was. But they were slightly decreased at over 8$0^{\circ}C$, and K/S was slowly increased. 3. As tannin treatment time increased, tannin weighting effect increased but they were decreased at over 8$0^{\circ}C$, 90min. 4. As tannin concentration increased, tannin weighting was increased. 5. In tannin weighting effect according to various pH conditions, the it's best range of pH were 3.5~5.5 of Mimosa, 2.5~3.5 of Quebracho.o.

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The effects of some natural products on mouse melanoma cells in vitro

  • Cha, Eun-Jung;Kim, An-Keun
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.321.1-321.1
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    • 2002
  • To indentify inhibitors of melanogenesis. we compared the effect of some natural products on mushroom tyrosinase. human melanocytic tyrosinase activity and melanin content. The cytotoxicity of the component were also tested on cultured mouse melanoma cells, Each extract significantly inhibited tyrosinase activity and melanin synthesis in vitro and B 16 melanoma cell lines. In B 16 cell lines, watermelon's inner shell extract inhibited tyrosinase activity as strong as kojic acid at 150${\um}g$/${\mu}\ell$ concentration. And morning glory'seed extract inhibited melanin synthesis more than kojic acid at 150${\um}g$/${\mu}\ell$ concentration. Each extract were strong inhibitors of tyrosinase activity and total melanin synthesis in B 16 mouse melanoma cell lines at less than 100${\um}g$/${\mu}\ell$ concetration. These result show that extract of watermelon's inner shell. lettuce. morning glory's seed and licorice root could be developed as skin whitening component of cosmetics.

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배관내 흐르는 아이스슬러리의 실시간 얼음분율 측정 (A Real Time Measurement of Ice Concentration of Ice Slurry in Pipe)

  • 정해원;백종현;김용찬;강채동;홍희기
    • 설비공학논문집
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    • 제19권8호
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    • pp.599-606
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    • 2007
  • An experimental study was performed to measure a ice concentration of ice slurry flowing in a pipe in a real time. In the present paper, we suggested a measuring method by a refractive index and compared it to other methods by a freezing point and a density. To measure the refractive index of the solution, ice particles in the ice slurry should be completely removed and a hydro-cyclone was introduced instead of a mesh. The measuring method through the refractive index coincided with the density method using the real-time solution density within ${\pm}5%$ error range, having the error range less than the other two methods. In the other hand, the measuring method through the density has a good resolution, but the result using the initial density of the solution was different more than 10% error from that using the real-time density. And it has an error range 1.5 times greater than the method through the refractive index.