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1
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THE INFLUENCE OF THE PHYSICOCHEMICAL FACTORS ON DISSOLUTION OF THE SUBSTANCE OF CLASS II BCS FROM SOLID DISPERSIONS WITH CHITOSAN

100%
Grimling B., Górniak A., Meler J., Pluta J.
Progress on Chemistry and Application of Chitin and its Derivatives
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2013
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vol. 18
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issue 18
157-165
EN
The BCS class II includes drugs with low solubility and high permeability. Fenofibrate is an example of this class drugs. The aim of the study was to investigate the effect of chitosan about average molecular weight in various formulations on the dissolution of fenofibrate incorporated into this polymer carrier. The study investigated fenofibrate in solid dispersions using a method of the solvent evaporations at the drug to polymer ratio of 1:9;3:7;5:5. The highest dissolution of fenofibrate, amounting to 72.7%, was observed after 60 minutes from solid dispersions with drug-polymer weight ratio 1:9 in the presence chitosan A and was72 times higher in relation to the amount of added polymer in comparison to the solubility of pure drug. Investigations DSC showed that fenofibrate was remained in crystalline state in solid dispersion.
2
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Measurements of Hydrogen Solubility in Nitrobenzene/Aniline Mixtures

100%
Sobieszuk P., Srebniak A., Kraut M., Görke O.
Chemical and Process Engineering
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2017
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vol. 38
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issue 2
3
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High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

100%
Gurgenova K., Bogeł-Łukasik R., Wawrzyniak P.
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vol. 34
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issue 3
387-392
EN
Binary vapour-liquid equilibrium of thymoquinone and carbon dioxide at the isothermal conditions was carried out at temperature 323.15 K and pressures from 6 to 10 MPa. The experimental data were fitted to the Soave-Redlich-Kwong equation of state. Results could be used for selection of process parameters in separation of volatiles from raw oil or for evaluation of existing separation technologies.
4
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Influence of complexation on the composition of equilibrium phases in the system of Ce2(SO4)3-La2(SO4)3

88%
Milanova M., Todorovsky D., Balarew C., Minkova N., Ivanova K.
Open Chemistry
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2007
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vol. 5
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issue 1
13-19
EN
The cocrystallization of Ce2(SO4)3 and La2(SO4)3 is studied in aqueous and H2SO4 (150 g/dm3) solutions at 25 °C and 64 °C. The effect of the formation of inner sphere sulfate complexes of the type LnSO 4+ in determining the composition of the equilibrium phases is revealed. [...]
5
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Liquid Perfluorochemicals as Flexible and Efficient Gas Carriers Applied in Bioprocess Engineering: An Updated Overview and Future Prospects

88%
Pilarek M.
Chemical and Process Engineering
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2014
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vol. 35
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issue 4
463-487
EN
Fully synthetic, biochemically inert and water-immiscible liquid perfluorochemicals (PFCs) are recognised as flexible liquid carriers/scavengers of gaseous compounds (respiratory gases mainly, i.e. O2 and CO2) and increasingly applied in bioprocess engineering. A range of unmatched physicochemical properties of liquid PFCs, i.e. outstanding chemo- and thermostability, extremely low surface tension, simultaneous hydro- and lipophobicity, which result from carbon chain substitution with fluorine atoms (the most electronegative chemical element) and the presence of intramolecular C-F bonds (the strongest single bond known in organic chemistry) have been described in detail. Exceptional propensity to solubility of respiratory gases in liquid perfluorinated compounds has been widely discussed. Advantages and disadvantages of bioprocess applications of liquid PFCs in the form of a pure PFC as well as in an emulsified form have been pointed out. A liquid PFC-mediated mass transfer intensification in various types of microbial, plant cell and animal cell culture systems: from miniaturised microlitre-scale cultures, via biomaterial-based scaffolds containing culture systems, to litre-scale bioreactors, has been reviewed and elaborated on bearing in mind the benefits of bioprocesses.
6
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High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

88%
Gurgenova K., Bogeł-Łukasik R., Wawrzyniak P.
Chemical and Process Engineering
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2013
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issue 3
7
Content available remote

Absorption of Co2 into Perfluorinated Gas Carrier in the Taylor Gas–Liquid Flow in a Microchannel System

88%
Sobieszuk P., Pilarek M.
Chemical and Process Engineering
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2012
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vol. 33
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issue 4
595-602
EN
The aim of this study was to determine the solubility of CO2 in perfluorodecalin (PFD) which is frequently used as efficient liquid carrier of respiratory gases in bioprocess engineering. The application of perfluorinated liquid in a microsystem has been presented. Gas-liquid mass transfer during Taylor (slug) flow in a microchannel of circular cross section 0.4 mm in diameter has been investigated. A physicochemical system of the absorption of CO2 from the CO2/N2 mixture in perfluorodecalin has been applied. The Henry’s law constants have been found according to two theoretical approaches: physical (H = 1.22·10-3 mol/m3Pa) or chemical (H = 1.26·10-3 mol/m3Pa) absorption. We are hypothesising that the gas-liquid microchannel system is applicable to determine the solubility of respiratory gases in perfluorinated liquids.
8
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Liquid Perfluorochemicals as Flexible and Efficient Gas Carriers Applied in Bioprocess Engineering: An Updated Overview and Future Prospects

75%
Pilarek M.
Chemical and Process Engineering
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2014
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issue 4
9
Publication available in full text mode
Content available

Absorption of Co2 into Perfluorinated Gas Carrier in the Taylor Gas–Liquid Flow in a Microchannel System

75%
Sobieszuk P., Pilarek M.
Chemical and Process Engineering
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2012
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issue 4
10
Content available remote

The Influence of Urea on the KHCO3and NH4VO3Solubility in the KHCO3+ NH4VO3+ H2O System

75%
Kiełkowska U., Trypuć M., Mazurek K., Drużyński S.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 2
23-26
EN
The influence of urea on the vanadium(V) and potassium ion concentrations in the KHCO3 + NH4VO3 + H2O system was determined in the temperature range of 293 K to 303 K. Additionally, the solution density dependence versus the urea concentration was presented. These data are essential for the assessment of optimum operating conditions for the new production process of potassium carbonate.
11
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Prediction of Gas Solubility in Ionic Liquids Using the Cosmo-Sac Model

75%
Jaschik M., Piech D., Warmuzinski K., Jaschik J.
Chemical and Process Engineering
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2017
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vol. 38
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issue 1
12
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Role of Acetone in the Formation of Highly Dispersed Cationic Polystyrene Nanoparticles

75%
Ernawati L., Balgis R., Ogi T., Okuyama K., Takada T.
Chemical and Process Engineering
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2017
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vol. 38
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issue 1
13
Content available remote

The influence of urea on the K2CO3and NH4VO3solubility in the K2CO3+ NH4VO3+ H2O system

75%
Kiełkowska U.
Polish Journal of Chemical Technology
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2008
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vol. 10
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issue 4
25-27
EN
The influence of urea on the vanadium(V) and potassium ion concentrations in the K2CO3 + NH4VO3 + H2O system was determined in the temperature range of 293 K to 313 K. Additionally, the solution density dependence versus the urea concentration was presented. These data are essential for the assessment of optimum operating conditions for the new production process of potassium carbonate.
14
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Separation and Immobilization of Vanadium from Industrial Fly Ash as an Insoluble Inorganic Pigment

75%
Kwolek P., Czubajewski K., Wojnicki M., Kwolek P., Czubajewski K., Wojnicki M.
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