Results 21 to 30 of about 2,148,803 (240)

Oxidation of cellulose in pressurized carbon dioxide [PDF]

open access: yes, 2009
This work presents first results upon oxidation of type II cellulose by nitrogen dioxide dissolved in carbon dioxide at high pressure. This reaction leads to oxidized cellulose, a natural-based bioresorbable fabric used for biomedical applications.
Montanari, Suzelei   +4 more
core   +1 more source

Numerical Simulation of Two-Phase Flow Pattern of Supercritical Carbon Dioxide With PAG-Type Lubricating Oil in Gas Cooler [PDF]

open access: yes, 2012
It has been reported that lubricating oil has a significant influence on the cooling heat transfer of supercritical carbon dioxide. In this study, numerical analysis of the flow pattern of a carbon dioxide (CO2)-oil mixture in a gas cooler was conducted ...
Dang, Chaobin   +2 more
core   +1 more source

Optimization Design Research of Supercritical Carbon Dioxide Power Cycle under Low-temperature Heat Sink Environment

open access: yesYuanzineng kexue jishu, 2023
This paper presents a cold-end optimization design study of a nuclear energy power conversion system in the context of low-temperature heat sink applications.
WANG Dianle;HUANG Yanping;YIN Kaikai;LIU Minyun;ZHOU Yuan;LAI Xiangpeng;LI Yong
doaj  

MODELLING OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF ANDROGRAPHOLIDE FROM ANDROGRAPHIS PANICULATA LEAVES BY EMPLOYING INTEGRAL DESORPTION CONCEPT [PDF]

open access: yes, 2006
Mathematical formulation is necessary for the optimisation and scale-up of a separation unit such as the extraction of biomolecules from their natural resources.
Kumoro, A.C., Hasan, M.
core   +2 more sources

Supercritical Carbon Dioxide–Based Sterilization of Decellularized Heart Valves

open access: yesJACC: Basic to Translational Science, 2017
Summary: Sterilization of grafts is essential. Supercritical carbon dioxide, electrolyzed water, gamma radiation, ethanol-peracetic acid, and hydrogen peroxide techniques were compared for impact on sterility and mechanical integrity of porcine ...
Ryan S. Hennessy, MD   +7 more
doaj   +1 more source

Experimental Study on Prototype of Printed Circuit Heat Exchanger

open access: yesFrontiers in Energy Research, 2022
The printed circuit heat exchanger (PCHE) is the key equipment of the supercritical carbon dioxide Brayton cycle applied to sodium cooled fast reactor.
Dongxu Zhang   +3 more
doaj   +1 more source

The possibility of hydrocarbon systems formation by thermometamorphical genesis and the role of hydrothermal super critical fluids [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
Using the example of supercritical fluids of carbon dioxide and water acssociation from the standpoint of supercritical fluid extraction of organic substances from sedimentary rocks and supercritical cracking of hydrocarbons, the possibility of formation
Abramov V.Yu., Pyataev A.A.
doaj   +1 more source

Carbon Dioxide Splitting: A Summary of the Peer-Reviewed Scientific Literature [PDF]

open access: yes, 2008
Increasing concentrations of carbon dioxide (CO2) in the atmosphere have stimulated significant global research and development efforts regarding the reduction in CO2 emissions from all point and non-point sources. In addition to technologies that do not
Sierra Rayne
core   +1 more source

EFFECT OF SOLVENT FLOW RATE ON THE SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF ANDROGRAPHOLIDE FROM ANDROGRAPHIS PANICULATA [PDF]

open access: yes, 2006
Malaysia is one of the major medicinal plants (Andrographis paniculata) producers in the world. Extraction of bioactive component (andrographolide) from ground dried leaves of this plant using supercritical carbon dioxide has been studied.
Kumoro, A.C., Hasan, M.
core   +1 more source

Characterization of wheat germ oil extracted by liquid and supercritical carbon dioxide.

open access: yesGrasas y Aceites, 1997
In this work the quality of wheat germ oil obtained by extraction with liquid and supercritical carbon dioxide was studied. At the optimum operating conditions, the yield of supercritical extraction is similar to the conventional extraction by organic ...
A. Molero Gómez   +2 more
doaj   +1 more source

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