• Title/Summary/Keyword: oil transport

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Effects of High Polyunsaturated Fat Diet on Human Plasma Cholesterol Esterification and Transfer (고 불포화 지방산 식이가 인체 혈청 Cholesterol의 Esterification과 Transfer에 미치는 영향)

  • Lee Myoung Sook
    • Journal of Nutrition and Health
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    • v.26 no.7
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    • pp.819-828
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    • 1993
  • The reaction of lecithin cholesterol acyltransferase(LCAT) and cholesteryl ester transfer protein (CETP) are important in cholesterol esterification and transfer for the reverse cholesterol transport(RCT) system. The purpose of this study were to assess the effects of fatty acid unsaturation on RCT system. After 12 female human subjects consumed a prescribed high saturated fat diet prior to the period, two groups of six subjects were provided with a high PUFA(corn oil) or a high SFA(butter) as major fats in a 40 en % fat diet. Butter feeding increased plasma total-(34%), esterified-(96%), HDL_3$-(23%), LDL-(20%), and VLDL plus LDL(35%) cholesterol while corn oil feeding decreased esterified-(25%), LDL(15%) cholesterol and TG(27%). There were significant differences of fats on total-(p=0.0001), esterified-(p=0.0001), total HDL-(p=0.005), $HDL_2$-(p=0.01)and LDL-(p=0.0001) cholesterol. LCAT activity did not change during the period but highly correlated to apo A-I in HDL which was increased in the corn oil group. The 2.5 fold increased CETP activity in the butter group during the period might be related to changes in plasma VLDL plus LDL cholesterol level which were increased in the butter group.

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A Study on the Energy Saving Plan by the Utilization of transport System -Concerned to Cargo transportation- (수송체계의 효율화를 통한 에너지절약방안에 관한 연구 -화물윤송을 대상으로-)

  • 이석태
    • Journal of the Korean Institute of Navigation
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    • v.9 no.2
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    • pp.27-41
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    • 1985
  • The transportation productivity is the throughput of utility per locations of resources and is able to be brought forth by using transportation mode. Therefore, Oil energy is necessary for using the transportation mode that is mainly consisted of four parts trucks, railroad, ship and aircraft, and Oil quantity used for such modes is not respectively same. Noticing Such a Point, the purpsoe of this paper is to reaserch the transportation mode of convertable cargoes and to minimize energy consumption quantity by adopting such a mode. We must ttend to Energy-Intensity, Transportation, Distance and cargo quantity for selecting the transport mode to energy consumption and the minimization of transportation energy consumption is concluded in the next LP Problem. As above mentioned, we can find the solution of Xij by the LP when Xij is transportation cargo per routes, and fullfil the minimization of Energy Consumption.

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Numerical simulation of single-phase two-components flow in naturally fractured oil reservoirs

  • Debossam, Joao Gabriel Souza;dos Santos Heringer, Juan Diego;de Souza, Grazione;Souto, Helio Pedro Amaral
    • Coupled systems mechanics
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    • v.8 no.2
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    • pp.129-146
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    • 2019
  • The main goal of this work is to develop a numerical simulator to study an isothermal single-phase two-component flow in a naturally fractured oil reservoir, taking into account advection and diffusion effects. We use the Peng-Robinson equation of state with a volume translation to evaluate the properties of the components, and the discretization of the governing partial differential equations is carried out using the Finite Difference Method, along with implicit and first-order upwind schemes. This process leads to a coupled non-linear algebraic system for the unknowns pressure and molar fractions. After a linearization and the use of an operator splitting, the Conjugate Gradient and Bi-conjugated Gradient Stabilized methods are then used to solve two algebraic subsystems, one for the pressure and another for the molar fraction. We studied the effects of fractures in both the flow field and mass transport, as well as in computing time, and the results show that the fractures affect, as expected, the flow creating a thin preferential path for the mass transport.

Antidiarrheal, Anticostive and Antimutagenic Effects of Bifidobacterium breve K-110, K-111 and B. infantis K-525 from Korean in Experimental Animals (한국형유산균인 Bifidobacterium breve K-110, K-111 및 B. infantis K-525 균주의 완하, 항사하 및 항돌연변이효과)

  • Rhee, Young-Kyung;Kim, Dong-Hyun;Han, Myung-Joo
    • Korean Journal of Food Science and Technology
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    • v.31 no.2
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    • pp.547-552
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    • 1999
  • Antidiarrheal, anticostive and antimutagenic effects of Bifidobacterium breve K-110, K-111 and B. infantis K-525 isolated from Korean were investigated in experimental animals. These Bifidobacteria were not significantly affected on the transport of barium sulfate in the small intestine. However, these Bifidobacteria significantly stimulated the transport of barium sulfate in the large intestine. Particularly, when Bifidobacterium breve K-110 (500 mg/kg) was orally administered, the transport of barium sulfate in the large intestine was increased 45%, compared to the control group. On the castor oil-induced diarrheal mice, Bifidobacterium breve K-111 had the antidiarrheal activity but the other Bifidobacteria did not had it. When the antimutagenicity of these Bifidobacteria and their peptidoglycans were examined using Salmonella typhimurium TA98/TA100 in an in vitro assay system, these Bifidobacteria and peptidoglycans showed inhibitory effect of $20{\sim}80%$. These results indicate that Bifidobacterium spp. had antidiarrheal, anticostive and antimutagenic activities as well as the inhibitory activity of harmful enzymes of intestinal bacteria in the intestine.

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Energy Efficiency and CO2 Emissions of the Transportation System of Kazakhstan: A Case of Almaty

  • Yessekina, Aiman;Urpekova, Amina
    • The Journal of Asian Finance, Economics and Business
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    • v.2 no.3
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    • pp.41-46
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    • 2015
  • Energy saving in the transport sector in the framework of the annual growth of energy consumption, the degree of negative impact on the environment and the amount of harmful emissions are becoming increasingly important. The article considers the world tendencies of energy consumption in transportation sector and emphasizes its dependency from oil. Also article describes the dynamics of energy use and CO2 emissions from transport of city Almaty. In conclusion authors identify a number of problems in the transport sector, which hinder the implementation of energy efficiency measures and measures to reduce CO2 emissions.

Magnetically levitated transport system for a controller-free carrier (제어기 무장착 운송대를 위한 선형운동 자기부상 운송시스템)

  • Son, Yeong-Uk;Park, Gi-Hwan
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.21 no.12
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    • pp.2196-2208
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    • 1997
  • In this work, a magnetic levitation (maglev) system is developed to transport a wafer between semiconductor fabrication process modules in clean rooms to take advantages of eliminating particle and oil contamination that normally exist in conventional transport systems due to contact motion of mechanical components. A main feature of the maglev system developed in this work is that a controller and power supplying part are not mounted on the moving carrier but on the stationary track, which is defined a controller-free carrier, to reduce carrier's weight. Iron-core electromagnets and irons are used for levitation, and air-core electromagnets and permanent magnets are used for stabilization. Analysis, design, and modeling of the magnetically levitated transport system are presented. The performance of the maglev system is experimentally demonstrated.

Experimental Studies on the Antidiarrheal Effects of Anjang-san

  • Oh, Seung-Whan;Ryu, Bong-Ha
    • The Journal of Korean Medicine
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    • v.32 no.6
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    • pp.54-66
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    • 2011
  • Objectives: The purpose of the present study was to investigate the antidiarrheal effects of Anjang-san in mice and rats. Methods: We measured the content of condensed tannin in Anjang-san extract, and observed the effects of Anjang-san on the small intestinal and colonic transport of mice, as well as on mice models of diarrhea induced by castor oil and $MgSO_4$, and on rat models of castor oil-induced enteropooling. Results: Anjang-san showed significant inhibitory effects on abnormally increased small intestinal transit induced by pyridostigmine and neostigmine, and inhibitory effects on large intestinal transit. Anjang-san also exhibited antidiarrheal effects on diarrhea induced by $MgSO_4$, and inhibitory effects on castor oil-induced enteropooling. Anjang-san also improved castor oil-induced diarrhea based on simple numbers without statistical significance. Conclusion: These results demonstrate that Anjang-san has significant antidiarrheal properties and attests to its possible utility in functional diarrheas, irritable bowel syndrome and other gastrointestinal disorders based upon further studies.

Recovery of Levafix brilliant red E-4BA and Levafix brilliant red E-6BA from aqueous solution by supported liquid membrane

  • Muthuraman, G.;Sathya, M.;Soniya, M.;Elumalai, S.
    • Membrane and Water Treatment
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    • v.4 no.4
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    • pp.277-291
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    • 2013
  • The transport and recovery of Levafix brilliant red E-4BA and Levafix brilliant red E-6BA were investigated using polytetrafluoroethylene (PTFE) fiber based supported liquid membrane containing tetra butyl ammonium bromide (TBAB) in coconut oil as a carrier. The influencing parameters studied are: pH of the feed solution, concentration of dye in the feed solution, extractant concentration, and various kind of stripping agent, rate of stirring, time of transport, reusability of membrane and stability of membrane. Increase in TBAB concentration inside the membrane enhances the flux with its maximum value at $1.553{\times}10^{-4}$ M TBAB. Further increase in the concentration of TBAB leads to decreased rate of transport due to increase in viscosity of membrane liquid. The optimum conditions for dye transport are: pH of feed ($7{\pm}0.1$), $1.553{\times}10^{-4}$ M extractant concentration, 350 rpm for stirring, $4.9{\times}10^{-1}$ M potassium hydrogen phthalate as a stripping solution, the time of transport 6 h. It was noticed that flux values were increased with increasing dye concentration in the feed phase. Applying this study to textile wastewater, dyes were transported up to 98% in 6 h. This recovery technique is rewarding to environment and economic.

Analyses on Solute Transport with the Movement of an LNAPL on the Water Table (지하수면 위의 LNAPL 이동을 고려한 용질이동에 대한 분석)

  • 김지훈;최종근
    • Journal of Soil and Groundwater Environment
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    • v.8 no.3
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    • pp.1-7
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    • 2003
  • A modified model was developed for solute transport in porous media that can consider the movement of an LNAPL above the water table. From the results of sensitivity analyses with and without considering LNAPL movement, there are some differences according to the hydraulic gradient, the quantity of oil leakage and dispersivity. The mean deviation between the model in this study and a conventional model without LNAPL movement increases as the hydraulic gradient decreases and the quantity of oil leakage increases. Variation of dispersivity has no influence on the magnitude of the mean deviation. However, the spatial distribution of the deviation between the two models is wider as dispersivity increases. Furthermore, groundwater is at high risk of contamination in the vertical direction in the case that transverse dispersion value is large. A conventional model underestimates the concentration of solute in an aquifer where the movement of an LNAPL cannot be negligible: Based on the study results, it is important to understand how fast the LNAPL moves on the water table for realistic prediction of solute transport in an aquifer with the movable LNAPL on the water table.

Anesthetic and Physiological Effects of Clove oil and Lidocaine-HCl on the Grass Puffer, Takifugu niphobles

  • Gil, Hyun Woo;Lee, Tae Ho;Choi, Cheol Young;Kang, Shin Beom;Park, In-Seok
    • Ocean and Polar Research
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    • v.39 no.1
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    • pp.1-11
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    • 2017
  • The aim of this study was to determine the physiological response and the applicable concentration ranges of anesthetic clove oil and anesthetic lidocaine-HCl, and to investigate the synergistic effect of a mixture of these two anesthetics on the in grass puffer (Takifugu niphobles). The anesthesia times decreased and the recovery times increased with increasing concentrations of clove oil and lidocaine-HCl. Applicable concentration ranges for long-term transportation requiring more than 1 hour were 2 ppm for clove oil and 50 ppm for lidocaine-HCl. With mixtures of the two anesthetics, the anesthesia time decreased as the admixture concentration of clove oil and lidocaine-HCl increased. Anesthesia times of experimental groups with the combined anesthetics were shorter than those with the same concentrations of clove oil or lidocaine-HCl alone. Plasma cortisol concentrations were highest at 6 hours in all experimental groups anesthetized with the mixture of clove oil and lidocaine-HCl, while all groups with clove oil or lidocaine-HCl alone had the highest plasma cortisol concentrations at 12 hours. Plasma glucose concentrations were highest at 12 hours in experimental groups anesthetized with the mixture of clove oil and lidocaine-HCl, while groups with clove oil or lidocaine-HCl alone had the highest plasma glucose at 24 hours. The results of this study provide basic information about anesthetics and the synergistic effect of mixtures of anesthetics in this fish species. This information should be useful for aquaculturists who require methods for safe and easy fish handling, and for transporters who require that minimal stress is imposed on fish during transport.