• Title/Summary/Keyword: Density Profile

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Antihyperlipidemic Effects of Bupleuri Radix, padix and Uncariae Ramulus et Uncus on Experimental Hyperlipidemia in rats (고지혈증 랫트를 이용한 시호, 작약, 조구등의 항고지혈 효과)

  • 노환성;고우경;박건구;조영환;박형섭
    • Biomolecules & Therapeutics
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    • v.5 no.1
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    • pp.43-47
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    • 1997
  • Effects of Bupleuri Radix, Paeonie Radix or Uncariae Ramulus et rncus on experimental yperlipidemia were studied. Hyperlipidemia was induced on male Wistar rats by feeding them on high holesterol diet for one week, as previously described by the authors. Blood lipid profile was verified on these ats by measuring total cholesterol(TC), triglyceride(TG), high density lipoprotein cholesterol(HDL) and low ensity lipoprotein cholesterol(LDL). Then, the rats were followed by feeding normal diet. At the same time, ethanol extracts of the three individual herb medicines were orally administered to the rats for 4 weeks and the parameters above mentioned were monitored. Methanol extract of 5Bupleuri radix reduced the TC value significantly at 2 week point and Paeoneae Radix reduced the TC value at 4 week point in compare to control group, suggesting the antihyperlipidemic effect of the two herbal medicines in vivo. The extract of Uncariae Ramulus et Uncus however did not show antihyperlipidemic effect in our experiment.

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Effectso f Dehulled Defatted Soy Flour on Postprandial Lipid Profile and Enzyme and Hormone Levels in Rats (탈피 탈지 대두분 식이가 흰쥐에서 식후 Lipid Profile과 효소, 호르몬 농도에 미치는영향)

  • 한정희
    • Journal of Nutrition and Health
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    • v.31 no.2
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    • pp.135-142
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    • 1998
  • This study was undertaken to determine whether dehulled defatted flour has an effect on postprandial plasma lipoprotein composition, hepatic lipid composition, enzyme and hormone levels in rats. Control(casein) and experimental (dehulled defatted soy flour)diets were fed to rats for 7 weeks. all animals (S. D. rats, male) were sacrificed 2 hrs after the feeding of 5g of each diet. Defatted soy flour feeding significantly lowered postprandial plasma total cholesterol, chylomicron/VLDL-cholesterol, hepatic cholesterol and triglyceride(TG) as compared with casein feeding, whereas no significant effect on plasma TG was observed. Intestinal kipase activity was elevated , whereas trypsin activity was suppressed in the dehulled defatted soy flour group. Plasma glucagon, thyroid hormone and hepatic HMG-coA reductase levels were not affected by diet treatment. These results hypothesize that dehulled defatted soy flour affects cholesterol digestion and absorption in guts, thus delaying the appearance of chylomicron cholesterol in plasma or affecting the disappearance of chylomicron remnant to high-density-lipoprotein(HDL).

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ROCKET MEASUREMENT OF MIDDLE ATMOSPHERIC OZONE CONCENTRATION PROFILE BY KSR-II

  • KimJhoon
    • Journal of Astronomy and Space Sciences
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    • v.15 no.2
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    • pp.391-400
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    • 1998
  • KSR-II, a two-stage sounding rocket of KARI was launched successfully at the west coast of the Korean Peninsula at 1000LST, June 11, 1998. For the ozone measurement mission, 8-channel UV and visible radiometers were onboard the rocket. The rocket measured the first in situ stratospheric and mesospheric ozone density profile over Korea during its ascending phase using the radiometer. Comparisons with Dobson spectrophotometer, ozonesonde, and HALOE onboard the UARS are shown together. Our results are in reasonable agreements with others.

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Power t distribution

  • Zhao, Jun;Kim, Hyoung-Moon
    • Communications for Statistical Applications and Methods
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    • v.23 no.4
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    • pp.321-334
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    • 2016
  • In this paper, we propose power t distribution based on t distribution. We also study the properties of and inferences for power t model in order to solve the problem of real data showing both skewness and heavy tails. The comparison of skew t and power t distributions is based on density plots, skewness and kurtosis. Note that, at the given degree of freedom, the kurtosis's range of the power t model surpasses that of the skew t model at all times. We draw inferences for two parameters of the power t distribution and four parameters of the location-scale extension of power t distribution via maximum likelihood. The Fisher information matrix derived is nonsingular on the whole parametric space; in addition we obtain the profile log-likelihood functions on two parameters. The response plots for different sample sizes provide strong evidence for the estimators' existence and unicity. An application of the power t distribution suggests that the model can be very useful for real data.

A Study on the Severity Control of Unpaved Test Courses (비포장 노면의 가혹도 관리에 관한 연구)

  • Yang, Jin-Saeng;Goo, Sang-Hwa;Lee, Jeong-Hwan;Kang, Do-Kyoung;Lee, Sang-Ho
    • Journal of the Korean Society for Precision Engineering
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    • v.24 no.2 s.191
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    • pp.47-57
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    • 2007
  • The vibration environment essentially companied by vehicle operation on the road is determined by the shape of road surface, which is called profile. In general, the profile and severity of unpaved road is an important issue in the reliability of durability test for vehicles. In order to maintain severity of unpaved road, it is necessary to develop profilometer system. We developed profilometer system which is composed of data processing computer, power unit, air compressor and sensors. This paper focuses on the severity management of unpaved test courses using neural networks. This paper presents the maintenance range for cross-country course in CPG(Chang-won Proving Ground) and the evaluation of similarity degree between unpaved roads.

GaN Dry Etching Characteristics using a planar Inductively coupled plasma (평판형 유도 결합 플라즈마틀 이용한 GaN 건식 식각 특성)

  • Kim, Moon-Young;Kim, Tae-Hyun;Jang, Sang-Hun;Tae, Heung-Sik
    • Proceedings of the KIEE Conference
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    • 1997.11a
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    • pp.276-278
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    • 1997
  • The reliable etching process is one of the essential steps in fabricating GaN based-device. High etch rate is needed to obtain a deeply etched structure and perfect anisotropic etched facet is needed to obtain lasing profile. In the research, therefore, we had proposed a planar inductively coupled plasma etcher (Planar ICP Etcher) as a high density plasma source, and studied the etching mechanism using the $CH_4/H_2$/Ar gas mixture. Dry etching characteristics such as etch rate, anisotropic etching profile and so on, for the III-V nitride layers were investigated using Planar ICP Etcher, based on the plasma characteristic as a variation of plasma process parameters.

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Data Mining for Identification of Molecular Targets in Ovarian Cancer

  • Villegas-Ruiz, Vanessa;Juarez-Mendez, Sergio
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.4
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    • pp.1691-1699
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    • 2016
  • Ovarian cancer is possibly the sixth most common malignancy worldwide, in Mexico representing the fourth leading cause of gynecological cancer death more than 70% being diagnosed at an advanced stage and the survival being very poor. Ovarian tumors are classified according to histological characteristics, epithelial ovarian cancer as the most common (~80%). We here used high-density microarrays and a systems biology approach to identify tissue-associated deregulated genes. Non-malignant ovarian tumors showed a gene expression profile associated with immune mediated inflammatory responses (28 genes), whereas malignant tumors had a gene expression profile related to cell cycle regulation (1,329 genes) and ovarian cell lines to cell cycling and metabolism (1,664 genes).

Study on Synthesis and Characterization of (Ti.Si)C Composite by SHS Microwave (SHS 마이크로파에 의한 (Ti.Si)C 복합체의 합성 및 소결특성에 관한 연구)

  • 이형복;권상호;이재원;안주삼
    • Journal of the Korean Ceramic Society
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    • v.32 no.9
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    • pp.1009-1018
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    • 1995
  • (Ti.Si)C composite powders were synthesized by SHS method using microwave energy. Compositional and structural characterization of the powder were carried out by using scanning electron microscopy and X-ray diffraction. The average particle size of the synthesized (Ti.Si)C composite powders was smaller than that of the starting materials. From the results of the temperature profile, combustion temperature and velocity were decreased with increasing Si molar ratio. With increasing C molar ratio combustion temperature and velocity did not change. (Ti.Si)C composite was sintered at 185$0^{\circ}C$ for 60 min by using hot-pressing with 30 MPa. The best properties were obtained from the sintered specimen whose composition was 1 : 1 : 1.9 molar ratio of Ti : Si : C. The sintering density, flexural strength and vickers hardness of the sintered body were 4.71 g/㎤, 423 MPa and 21 GPa, respectively.

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A Study on Synthesis and Characterization of $Ti_xZr_{1-x}C$ Solid-Solution by Self-propagation High Temperature Synthesis Method (SHS법에 의한 $Ti_xZr_{1-x}C$ 고용체의 합성 및 특성 연구)

  • 이형복;오유근;이성민
    • Journal of the Korean Ceramic Society
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    • v.34 no.7
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    • pp.731-737
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    • 1997
  • TixZr1-xC(0$0^{\circ}C$, 5.1 mm/sec respectively. The relative density, three point flexural strength, and the hardness of composites, which was sintered at 190$0^{\circ}C$ for 60 min by using hot-pressing under a pressure of 30 MPa, were 99%, 525 MPa and 24 GPa respectively.

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THIN SHELL FORMATION TIME AND [OIII] LINE IN FAST WIND BUBBLE (빠른 항성풍 거품의 구각형성 시각과 [OIII]선의 형성)

  • Choi, Seung-Eon;Lee, Yeong-Jin
    • Publications of The Korean Astronomical Society
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    • v.11 no.1
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    • pp.91-107
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    • 1996
  • We determine analytically the onset of thin-shell formation time of fast wind bubble with power-law energy injection $E_{in}=E_0t^s$, and power-law ambient density structure, ${\rho}_0(r)={\bar{\rho}}(r/{\bar{r}})^{-{\omega}}$. Thin-shell formation time, $t_{sf}$ can be estimated by minimizing the total time elapsed before the complete cooling of shocked gas. For uniform medium (${\omega}=0$) and constant energy injection (s = 1), the onset of shell formation is found to be at $t_{sf}=5.2{\times}10^3yr$, which agrees Quite well with the results of FCT 1D numerical calculation. We solve the line transfer problem with previous result derived by numerical calculation in order to calculate line profile of [OIII] (${\lambda}=5007{\AA}$) forbidden line. In general, radiative outer shell causes the formation of double peaked line profile. Each peak corresponds to approaching and receeding shells with large velocities. Our line profiles show good agreements with observation of expanding shell structure.

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