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Hamieh T. Thermal Surface Properties, London Dispersive and Polar Surface Energy of Graphene and Carbon Materials Using Inverse Gas Chromatography at Infinite Dilution. Molecules 2024; 29:2871. [PMID: 38930936 PMCID: PMC11206878 DOI: 10.3390/molecules29122871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
The thermal surface properties of graphenes and carbon materials are of crucial importance in the chemistry of materials, chemical engineering, and many industrial processes. BACKGROUND The determination of these surface properties is carried out using inverse gas chromatography at infinite dilution, which leads to the retention volume of organic solvents adsorbed on solid surfaces. This experimental and fundamental parameter actually reflects the surface thermodynamic interactions between injected probes and solid substrates. METHODS The London dispersion equation and the Hamieh thermal model are used to quantify the London dispersive and polar surface energy of graphenes and carbon fibers as well their Lewis acid-base constants by introducing the coupling amphoteric constant of materials. RESULTS The London dispersive and polar acid-base surface energies, the free energy of adsorption, the polar enthalpy and entropy, and the Lewis acid-base constants of graphenes and carbon materials are determined. CONCLUSIONS It is shown that graphene exhibited the highest values of London dispersive surface energy, polar surface energy, and Lewis acid-base constants. The highest characteristics of graphene justify its great potentiality and uses in many industrial applications.
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Affiliation(s)
- Tayssir Hamieh
- Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands;
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), Faculty of Sciences, Lebanese University, Beirut P.O. Box 6573/14, Lebanon
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2
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Hamieh T. Temperature Dependence of the Polar and Lewis Acid-Base Properties of Poly Methyl Methacrylate Adsorbed on Silica via Inverse Gas Chromatography. Molecules 2024; 29:1688. [PMID: 38675508 PMCID: PMC11052169 DOI: 10.3390/molecules29081688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
The adsorption of polymers on solid surfaces is common in many industrial applications, such as coatings, paints, catalysis, colloids, and adhesion processes. The properties of absorbed polymers commonly vary with temperature. In this paper, inverse gas chromatography at infinite dilution was used to determine the physicochemical characterization of PMMA adsorbed on silica. A new method based on the London dispersion equation was applied with a new parameter associating the deformation polarizability with the harmonic mean of the ionization energies of the solvent. More accurate values of the dispersive and polar interaction energies of the various organic solvents adsorbed on PMMA in bulk phase and PMMA/silica at different recovery fractions were obtained, as well as the Lewis acid-base parameters and the transition temperatures of the different composites. It was found that the temperature and the recovery fraction have important effects on the various physicochemical and thermodynamic properties. The variations in all the interaction parameters showed the presence of three transition temperatures for the different PMMA composites adsorbed on silica with various coverage rates, with a shift in these temperatures for a recovery fraction of 31%. An important variation in the polar enthalpy and entropy of adsorption, the Lewis acid-base parameters and the intermolecular separation distance was highlighted as a function of the temperature and the recovery fraction of PMMA on silica.
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Affiliation(s)
- Tayssir Hamieh
- Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands;
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), Faculty of Sciences, Lebanese University, Beirut P.O. Box 6573/14, Lebanon
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3
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Sygusch J, Duempelmann R, Meyer R, Adamska K, Strzemiecka B, Enke D, Rudolph M, Brendlé E. Reproducibility of inverse gas chromatography under infinite dilution: Results and interpretations of an interlaboratory study. J Chromatogr A 2024; 1714:464526. [PMID: 38071876 DOI: 10.1016/j.chroma.2023.464526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 11/03/2023] [Accepted: 11/20/2023] [Indexed: 01/05/2024]
Abstract
Over the last years, inverse gas chromatography (IGC) proved to be a versatile and sensitive analytical technique for physicochemical properties. However, the comparability of results obtained by different users and devices remains a topic for debate. This is the first time, an interlaboratory study using different types of IGC instruments is reported. Eight organizations with different IGC devices defined a common lab measurement protocol to analyse two standard materials, silica and lactose. All data was collected in a standard result form and has been treated identically with the objective to identify experimentally observed differences and not potentially different data treatments. The calculated values of the dispersive surface energy vary quite significantly (silica: 22 mJ/m2 - 34 mJ/m2, lactose 37 mJ/m2 - 51 mJ/m2) and so do the ISP values and retention volumes for both materials. This points towards significant and seemingly undiscovered differences in the operation of the instruments and the obtained underlying primary data, even under the premise of standard conditions. Variations are independent of the instrument type and uncertainties in flow rates or the injected quantities of probe molecules may be potential factors for the differences. This interlaboratory study demonstrates that the IGC is a very sensitive analytical tool, which detects minor changes, but it also shows that for a proper comparison, the measurement conditions have to be checked with great care. A publicly available standard protocol and material, for which this study can be seen as a starting point, is still needed to judge on the measurements and the resulting parameters more objectively.
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Affiliation(s)
- Johanna Sygusch
- Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Straße 40, Freiberg 09599, Germany.
| | | | - Ralf Meyer
- Leipzig University, Institute of Chemical Technology, Linnéstr. 3, 04103 Leipzig, Germany
| | - Katarzyna Adamska
- Poznan University of Technology, Institute of Chemical Technology and Engineering, ul. Berdychowo 4, 60-965 Poznań, Poland
| | - Beata Strzemiecka
- Poznan University of Technology, Institute of Chemical Technology and Engineering, ul. Berdychowo 4, 60-965 Poznań, Poland
| | - Dirk Enke
- Leipzig University, Institute of Chemical Technology, Linnéstr. 3, 04103 Leipzig, Germany
| | - Martin Rudolph
- Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Chemnitzer Straße 40, Freiberg 09599, Germany
| | - Eric Brendlé
- Adscientis SARL, Parc Secoia, 1 rue Alfred Kastler, 68310 Wittelsheim, France
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4
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Evaluation of Time Consolidation Effect of Pharmaceutical Powders. Pharm Res 2022; 39:3345-3357. [PMID: 36180609 DOI: 10.1007/s11095-022-03402-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 09/21/2022] [Indexed: 12/27/2022]
Abstract
PURPOSE We aim to perform a systematic study of the time consolidation effect, i.e. the reduction of powder flowability resulting from at-rest storage, on a diverse array of pharmaceutical powders under different stress, humidity, and length of time. METHODS A ring shear cell-based methodology was employed. An instantaneous flow function was obtained, followed immediately by at-rest consolidation at precisely controlled humidity, stress, and duration. The consolidated powder was then subjected to shear-cell measurement. The difference in flowability between the immediate and consolidated specimens were attributed to the time consolidation effect. RESULTS Among the six excipients tested, three exhibited time consolidation at varying extents. Citric acid and starch underwent time consolidation only at high relative humidity (RH = 75%), promoted by vapor condensation and liquid bridge formation. For both materials, the flowability decreased with time, and the extent of time consolidation was not sensitive to the stress applied (0.4-2 kPa). Importantly, mannitol was found to time consolidate under both 50% and 75% RH. Given time, mannitol formed cake, giving rise to flow function below unity. Inverse gas chromatography analysis indicated that mannitol possesses high total surface energy among known pharmaceutical powders. CONCLUSION While time consolidation is prevalent among pharmaceutical powders, most can be mitigated by controlling the RH to below 75%. Notably, for materials possessing high surface energy, such as mannitol, time consolidation could occur at ambient humidity. Therefore, it is desirable to consider in-depth time consolidation evaluation for high surface energy powders, e.g. those subjected to milling or of amorphous nature.
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5
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Abiona O, Wyatt D, Koner J, Mohammed A. The Optimisation of Carrier Selection in Dry Powder Inhaler Formulation and the Role of Surface Energetics. Biomedicines 2022; 10:2707. [PMID: 36359226 PMCID: PMC9687551 DOI: 10.3390/biomedicines10112707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 11/25/2023] Open
Abstract
This review examines the effects of particle properties on drug-carrier interactions in the preparation of a dry powder inhaler (DPI) formulation, including appropriate mixing technology. The interactive effects of carrier properties on DPI formulation performance make it difficult to establish a direct cause-and-effect relationship between any one carrier property and its effect on the performance of a DPI formulation. Alpha lactose monohydrate remains the most widely used carrier for DPI formulations. The physicochemical properties of α-lactose monohydrate particles, such as particle size, shape and solid form, are profoundly influenced by the method of production. Therefore, wide variations in these properties are inevitable. In this review, the role of surface energetics in the optimisation of dry powder inhaler formulations is considered in lactose carrier selection. Several useful lactose particle modification methods are discussed as well as the use of fine lactose and force control agents in formulation development. It is concluded that where these have been investigated, the empirical nature of the studies does not permit early formulation prediction of product performance, rather they only allow the evaluation of final formulation quality. The potential to leverage particle interaction dynamics through the use of an experimental design utilising quantifiable lactose particle properties and critical quality attributes, e.g., surface energetics, is explored, particularly with respect to when a Quality-by-Design approach has been used in optimisation.
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Affiliation(s)
- Olaitan Abiona
- Aston Pharmacy School, Aston University, Birmingham B4 7ET, UK
| | - David Wyatt
- Aston Particle Technologies Ltd., Aston Triangle, Birmingham B4 7ET, UK
| | - Jasdip Koner
- Aston Particle Technologies Ltd., Aston Triangle, Birmingham B4 7ET, UK
| | - Afzal Mohammed
- Aston Pharmacy School, Aston University, Birmingham B4 7ET, UK
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Jadhav P, Patil P, Bhagwat D, Gaikwad V, Mehta PP. Recent advances in orthogonal analytical techniques for microstructural understanding of inhalable particles: Present status and future perspective. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Hamieh T. New Methodology to Study the Dispersive Component of the Surface Energy and Acid-Base Properties of Silica Particles by Inverse Gas Chromatography at Infinite Dilution. J Chromatogr Sci 2021; 60:126-142. [PMID: 34096571 DOI: 10.1093/chromsci/bmab066] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Indexed: 11/14/2022]
Abstract
A new methodology was proposed to determine the dispersive component of the surface energy ${\gamma}_s^d$ of a solid taking into account the effect of the temperature on the surface area of n-alkanes, methylene group (${a}_{- CH2-}$) and polar molecules, thus defeating the method used by Dorris-Gray Schultz et al. We determined the correct ${\gamma}_s^d$ of the surface energy, the specific free energy, enthalpy and entropy of adsorption of polar molecules as well as the acid base constants of silica particles with an excellent accuracy. We confirmed the dependence of the dispersive component of the surface energy on the variations of the surface areas of organic molecules used in IGC technique at infinite dilution. The specific properties of interactions of silica particles were determined. The new proposed model took into account this thermal effect. Obtained results proved that the other used IGC methods gave inaccurate values of the specific parameters of silica surface, except for the vapor pressure method that led to excellent results of the specific free energy, enthalpy and entropy of adsorption, and the acid-base constants of the silica particles.
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Affiliation(s)
- Tayssir Hamieh
- SATIE, IFSTTAR, University Gustave Eiffel, Campus de Marne-La-Vallée, 25, allée des Marronniers, 78000 Versailles, France.,Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA) and LEADDER Laboratory, Faculty of Sciences and EDST, Lebanese University, Hariri Campus, Hadath, P.O. Box 6573/14, Beirut, Lebanon
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8
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In-Depth Comparison of Dry Particle Coating Processes Used in DPI Particle Engineering. Pharmaceutics 2021; 13:pharmaceutics13040580. [PMID: 33921741 PMCID: PMC8073608 DOI: 10.3390/pharmaceutics13040580] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 11/17/2022] Open
Abstract
High-shear mixer coatings as well as mechanofusion processes are used in the particle-engineering of dry powder inhalation carrier systems. The aim of coating the carrier particle is usually to decrease carrier–drug adhesion. This study comprises the in-depth comparison of two established dry particle coating options. Both processes were conducted with and without a model additive (magnesium stearate). In doing so, changes in the behaviour of the processed particles can be traced back to either the process or the additive. It can be stated that the coarse model carrier showed no significant changes when processed without additives. By coating the particles with magnesium stearate, the surface energy decreased significantly. This leads to a significant enhancement of the aerodynamic performance of the respective carrier-based blends. Comparing the engineered carriers with each other, the high-shear mixer coating shows significant benefits, namely, lower drug–carrier adhesion and the higher efficiency of the coating process.
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9
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Thalberg K, Papathanasiou F, Fransson M, Nicholas M. Controlling the performance of adhesive mixtures for inhalation using mixing energy. Int J Pharm 2021; 592:120055. [PMID: 33176199 DOI: 10.1016/j.ijpharm.2020.120055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 10/23/2022]
Abstract
A concept of mixing energy, ME, has been developed and applied to blending of adhesive mixtures for inhalation in a high shear blender. Six different systems were investigated, four of which included a coating agent. For blends containing a coating agent, it is shown that the applied ME is key to the control of two important functional mechanisms: i) coating of the carrier by the coating agent, and ii) the dispersibility of the active pharmaceutical ingredient (API). The mass of the carrier was identified to be the mass which is relevant to the forces acting during mixing. The dispersibility in terms of the fine particle fraction (FPF) can be expressed as the product of two exponentials which both are functions of ME. The first factor accounts for the initial increase in FPF, while the second accounts for the decrease observed at extensive mixing. For adhesive mixtures without a coating agent, a similar decrease in FPF is observed when high forces are applied during mixing. Mechanistic interpretation of the behavior is provided.
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Affiliation(s)
- Kyrre Thalberg
- Inhalation Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca Gothenburg, Sweden.
| | - Foteini Papathanasiou
- Inhalation Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca Gothenburg, Sweden
| | - Magnus Fransson
- Inhalation Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca Gothenburg, Sweden
| | - Mark Nicholas
- Inhalation Product Development, Pharmaceutical Technology & Development, Operations, AstraZeneca Gothenburg, Sweden
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10
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Hamieh T. Study of the temperature effect on the surface area of model organic molecules, the dispersive surface energy and the surface properties of solids by inverse gas chromatography. J Chromatogr A 2020; 1627:461372. [DOI: 10.1016/j.chroma.2020.461372] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 02/04/2023]
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11
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Sharma R, Setia G. Mechanical dry particle coating on cohesive pharmaceutical powders for improving flowability - A review. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.08.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Školáková T, Souchová L, Patera J, Pultar M, Školáková A, Zámostný P. Prediction of drug-polymer interactions in binary mixtures using energy balance supported by inverse gas chromatography. Eur J Pharm Sci 2019; 130:247-259. [DOI: 10.1016/j.ejps.2019.01.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/17/2019] [Accepted: 01/20/2019] [Indexed: 11/30/2022]
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13
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Brunaugh AD, Smyth HDC. Formulation techniques for high dose dry powders. Int J Pharm 2018; 547:489-498. [PMID: 29778822 DOI: 10.1016/j.ijpharm.2018.05.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 01/08/2023]
Abstract
Delivery of drugs to the lungs via dry powder inhaler (DPI) is a promising approach for the treatment of both local pulmonary conditions and systemic diseases. Though DPIs are widely used for the pulmonary deposition of potent bronchodilators, anticholinergics, and corticosteroids, there is growing interest in the utilization of this delivery system for the administration of high drug doses to the lungs, as made evident by recent regulatory approvals for anti-microbial, anti-viral and osmotic agents. However, the formulation of high dose DPIs carries several challenges from both a physiological and physicochemical standpoint. This review describes the various formulation techniques utilized to overcome the barriers associated with the pulmonary delivery of high dose powders.
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Affiliation(s)
- Ashlee D Brunaugh
- University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, 2409 West University Avenue, Austin, TX 78712, United States
| | - Hugh D C Smyth
- University of Texas at Austin, College of Pharmacy, Division of Molecular Pharmaceutics and Drug Delivery, 2409 West University Avenue, Austin, TX 78712, United States; LaMontagne Center for Infectious Disease, The University of Texas at Austin, United States.
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14
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Bilgiç C. Determination of the surface properties of kaolinite by inverse gas chromatography. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 2017:319-328. [PMID: 29851384 DOI: 10.2166/wst.2018.136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Inverse gas chromatography (IGC) was applied to characterize the surface of kaolinite. The adsorption thermodynamic parameters (the standard enthalpy (∆H0), entropy (∆S0) and free energy of adsorption (∆G0), the dispersive component of the surface energy (γsd), and the acid/base character of kaolinite surface were estimated by using the retention time of different non-polar and polar probes at infinite dilution region. The specific free energy of adsorption (∆Gsp), the specific enthalpy of adsorption (∆Hsp), and the specific entropy of adsorption (∆Ssp) of polar probes on kaolinite were determined. (∆Gsp) values were correlated with the donor and modified acceptor numbers of the probes to quantify the acidic (KA) and the basic (KD) parameters of the kaolinite surface. The values obtained for the parameters KA and KD indicated a basic character for kaolinite surface.
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Affiliation(s)
- Ceyda Bilgiç
- Department of Chemical Engineering, Faculty of Engineering and Architecture, Eskişehir Osmangazi University, 26480 Eskişehir, Turkey E-mail:
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15
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Dierks M, Cao Z, Manayil JC, Akilavasan J, Wilson K, Schüth F, Rinaldi R. Impact of Hydrophobic Organohybrid Silicas on the Stability of Ni2
P Catalyst Phase in the Hydrodeoxygenation of Biophenols. ChemCatChem 2018. [DOI: 10.1002/cctc.201702001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Michael Dierks
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim-an-der-Ruhr Germany
| | - Zhengwen Cao
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim-an-der-Ruhr Germany
| | - Jinesh C. Manayil
- European Bioenergy Research Institute; School of Engineering & Applied Science; Aston University; Birmingham B4 7ET UK
| | - Jeganathan Akilavasan
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim-an-der-Ruhr Germany
| | - Karen Wilson
- School of Science; RMIT University; 124 La Trobe St Melbourne VIC 3000 Australia
| | - Ferdi Schüth
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim-an-der-Ruhr Germany
| | - Roberto Rinaldi
- Department of Chemical Engineering; Imperial College London; South Kensington Campus London SW7 2AZ UK
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16
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Koskela J, Morton DAV, Stewart PJ, Juppo AM, Lakio S. The effect of mechanical dry coating with magnesium stearate on flowability and compactibility of plastically deforming microcrystalline cellulose powders. Int J Pharm 2017; 537:64-72. [PMID: 29198809 DOI: 10.1016/j.ijpharm.2017.11.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/28/2017] [Accepted: 11/29/2017] [Indexed: 10/18/2022]
Abstract
Mechanofusion is a dry coating method that can be used to improve the flowability of cohesive powder by coating host particles with a lubricant, for example magnesium stearate (MgSt). It has been shown previously that fragmenting material can under some circumstances be mechanofused with MgSt without impairing compactibility of the powder and without reducing the dissolution rate of the resulting tablets. However, the effects on material with viscoelastic behaviour, known to be sensitive for the negative effects of MgSt, is not known. Therefore, mechanofusion of microcrystalline cellulose (MCC) with MgSt was investigated in this study. Four MCC grades were mechanofused with different MgSt concentrations and process parameters, and the resulting flowability and compactibility were studied. Starting materials and low-shear blended binary mixtures were studied as a reference. Mechanofusion improved the flow properties of small particle size MCC powders (d50 < 78 μm) substantially, but increasing the MgSt content consequently resulted in weaker tablets. Larger particle size MCC grades, however, fractured under the shear forces during the mechanofusion process and hence their flow properties were decreased. Improvement of the flow properties but also the negative effects on compactibility of small particle size grades were observed even at relatively mild mechanofusion parameters and low lubricant concentrations.
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Affiliation(s)
- Jaana Koskela
- Division of Pharmaceutical Chemistry and Technology, 00014 University of Helsinki, P.O. Box 56, Helsinki, Finland.
| | - David A V Morton
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3055, Australia
| | - Peter J Stewart
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3055, Australia
| | - Anne M Juppo
- Division of Pharmaceutical Chemistry and Technology, 00014 University of Helsinki, P.O. Box 56, Helsinki, Finland
| | - Satu Lakio
- Orion Pharma, Orionintie 1, 02200 Espoo, Finland
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17
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Kondor A, Hogan SA. Relationships between surface energy analysis and functional characteristics of dairy powders. Food Chem 2017; 237:1155-1162. [DOI: 10.1016/j.foodchem.2017.06.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 06/02/2017] [Accepted: 06/06/2017] [Indexed: 10/19/2022]
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18
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Tamadondar MR, Rasmuson A, Thalberg K, Niklasson Björn I. Numerical modeling of adhesive particle mixing. AIChE J 2017. [DOI: 10.1002/aic.15654] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammad R. Tamadondar
- Dept. of Chemistry and Chemical Engineering; Chalmers University of Technology; Gothenburg Sweden
| | - Anders Rasmuson
- Dept. of Chemistry and Chemical Engineering; Chalmers University of Technology; Gothenburg Sweden
| | - Kyrre Thalberg
- Astra Zeneca Pharmaceutical Development R&D Mölndal; Mölndal SE-431 83 Sweden
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19
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Hadjittofis E, Zhang GGZ, Heng JYY. Influence of sample preparation on IGC measurements: the cases of silanised glass wool and packing structure. RSC Adv 2017. [DOI: 10.1039/c7ra00178a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high amount of silanised wool can influence IGC measurements, especially for low surface energy/area materials.
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Affiliation(s)
- Eftychios Hadjittofis
- Surfaces and Particle Engineering Laboratory
- Department of Chemical Engineering
- Imperial College London
- London SW7 2AZ
- UK
| | - Geoff G. Z. Zhang
- Drug Product Development
- Research and Development
- AbbVie Inc
- North Chicago
- USA
| | - Jerry Y. Y. Heng
- Surfaces and Particle Engineering Laboratory
- Department of Chemical Engineering
- Imperial College London
- London SW7 2AZ
- UK
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20
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Jones MD, Buckton G. Comparison of the cohesion-adhesion balance approach to colloidal probe atomic force microscopy and the measurement of Hansen partial solubility parameters by inverse gas chromatography for the prediction of dry powder inhalation performance. Int J Pharm 2016; 509:419-430. [PMID: 27265314 DOI: 10.1016/j.ijpharm.2016.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/20/2016] [Accepted: 06/01/2016] [Indexed: 10/21/2022]
Abstract
The abilities of the cohesive-adhesive balance approach to atomic force microscopy (AFM) and the measurement of Hansen partial solubility parameters by inverse gas chromatography (IGC) to predict the performance of carrier-based dry powder inhaler (DPI) formulations were compared. Five model drugs (beclometasone dipropionate, budesonide, salbutamol sulphate, terbutaline sulphate and triamcinolone acetonide) and three model carriers (erythritol, α-lactose monohydrate and d-mannitol) were chosen, giving fifteen drug-carrier combinations. Comparison of the AFM and IGC interparticulate adhesion data suggested that they did not produce equivalent results. Comparison of the AFM data with the in vitro fine particle delivery of appropriate DPI formulations normalised to account for particle size differences revealed a previously observed pattern for the AFM measurements, with a slightly cohesive AFM CAB ratio being associated with the highest fine particle fraction. However, no consistent relationship between formulation performance and the IGC data was observed. The results as a whole highlight the complexity of the many interacting variables that can affect the behaviour of DPIs and suggest that the prediction of their performance from a single measurement is unlikely to be successful in every case.
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Affiliation(s)
- Matthew D Jones
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, United Kingdom; Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, United Kingdom.
| | - Graham Buckton
- Department of Pharmaceutics, UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, United Kingdom.
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21
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Williams DR. Particle engineering in pharmaceutical solids processing: surface energy considerations. Curr Pharm Des 2016; 21:2677-94. [PMID: 25876912 PMCID: PMC5421142 DOI: 10.2174/1381612821666150416100319] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 04/07/2015] [Indexed: 11/22/2022]
Abstract
During the past 10 years particle engineering in the pharmaceutical industry has become a topic of increasing importance. Engineers and pharmacists need to understand and control a range of key unit manufacturing operations such as milling, granulation, crystallisation, powder mixing and dry powder inhaled drugs which can be very challenging. It has now become very clear that in many of these particle processing operations, the surface energy of the starting, intermediate or final products is a key factor in understanding the processing operation and or the final product performance. This review will consider the surface energy and surface energy heterogeneity of crystalline solids, methods for the measurement of surface energy, effects of milling on powder surface energy, adhesion and cohesion on powder mixtures, crystal habits and surface energy, surface energy and powder granulation processes, performance of DPI systems and finally crystallisation conditions and surface energy. This review will conclude that the importance of surface energy as a significant factor in understanding the performance of many particulate pharmaceutical products and processes has now been clearly established. It is still nevertheless, work in progress both in terms of development of methods and establishing the limits for when surface energy is the key variable of relevance.
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Affiliation(s)
- Daryl R Williams
- Department of Chemical Engineering, Imperial College London, Prince Consort Road, Kensington London SW7 2AZ, United Kingdom.
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22
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Characterisation and surface-profiling techniques for composite particles produced by dry powder coating in pharmaceutical drug delivery. Drug Discov Today 2016; 21:550-61. [DOI: 10.1016/j.drudis.2015.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 11/05/2015] [Accepted: 11/25/2015] [Indexed: 11/17/2022]
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23
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Tucker I, Das S, Stewart P. A view on the less-than-rational development of drug delivery systems – The example of dry powder inhalers. J Drug Deliv Sci Technol 2015. [DOI: 10.1016/j.jddst.2015.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Milczewska K, Voelkel A, Zwolińska J, Jędro D. Preparation of hybrid materials for controlled drug release. Drug Dev Ind Pharm 2015; 42:1058-65. [PMID: 26559181 DOI: 10.3109/03639045.2015.1107092] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Authors obtained hybrid organic-inorganic materials applied in sustained drug delivery. The materials are ibuprofen as a model drug, hydroxyapatite and three different polymers as supports. Influence of the type of employed polymer, an inorganic carrier, on the properties and drug release profiles was estimated. Flory-Huggins interaction parameters, the dispersive component of surface free energy and acid-base characteristic of the surface were used to assess the behavior of the composites in terms of drug release. The experiments were carried out with the use of inverse gas chromatography (IGC), Fourier transform infrared (FTIR) and ultraviolet (UV) techniques. FTIR and ATR-FTIR spectra were collected. The values of [Formula: see text] parameter obtained for all investigated materials (excluding poly(L-lactide) (PLA2)) indicate low or medium activity. The strongest interactions (the lowest values of the Flory-Huggins [Formula: see text] parameter) are observed for PLA2 composition, while the weakest interactions for systems with polyethylene glycol (PEG). Finally, drug release profiles are shown. For materials prepared with Eudragit® (EUD) and PLA, the release of drug was much smaller, which corresponds to lower values of Flory-Huggins parameter. The executed experiments allowed the estimation of the properties of prepared composites. Prepared materials present properties required in sustained drug release and may be successfully applied as drug delivery systems.
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Affiliation(s)
- Kasylda Milczewska
- a Institute of Chemical Technology and Engineering, Poznan University of Technology , Ul. Berdychowo 4 , Poznań , Poland
| | - Adam Voelkel
- a Institute of Chemical Technology and Engineering, Poznan University of Technology , Ul. Berdychowo 4 , Poznań , Poland
| | - Joanna Zwolińska
- a Institute of Chemical Technology and Engineering, Poznan University of Technology , Ul. Berdychowo 4 , Poznań , Poland
| | - Dorota Jędro
- a Institute of Chemical Technology and Engineering, Poznan University of Technology , Ul. Berdychowo 4 , Poznań , Poland
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25
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Effect of milling temperatures on surface area, surface energy and cohesion of pharmaceutical powders. Int J Pharm 2015; 495:234-240. [DOI: 10.1016/j.ijpharm.2015.08.061] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 08/19/2015] [Accepted: 08/20/2015] [Indexed: 11/17/2022]
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26
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Dahmash EZ, Mohammed AR. Functionalised particles using dry powder coating in pharmaceutical drug delivery: promises and challenges. Expert Opin Drug Deliv 2015; 12:1867-79. [PMID: 26289674 DOI: 10.1517/17425247.2015.1071351] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Production of functionalised particles using dry powder coating is a one-step, environmentally friendly process that paves the way for the development of particles with targeted properties and diverse functionalities. AREAS COVERED Applying the first principles in physical science for powders, fine guest particles can be homogeneously dispersed over the surface of larger host particles to develop functionalised particles. Multiple functionalities can be modified including: flowability, dispersibility, fluidisation, homogeneity, content uniformity and dissolution profile. The current publication seeks to understand the fundamental underpinning principles and science governing dry coating process, evaluate key technologies developed to produce functionalised particles along with outlining their advantages, limitations and applications and discusses in detail the resultant functionalities and their applications. EXPERT OPINION Dry particle coating is a promising solvent-free manufacturing technology to produce particles with targeted functionalities. Progress within this area requires the development of continuous processing devices that can overcome challenges encountered with current technologies such as heat generation and particle attrition. Growth within this field requires extensive research to further understand the impact of process design and material properties on resultant functionalities.
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Affiliation(s)
- Eman Z Dahmash
- a Aston School of Pharmacy, Aston University , Birmingham, UK +44 0121 204 4183 ;
| | - Afzal R Mohammed
- a Aston School of Pharmacy, Aston University , Birmingham, UK +44 0121 204 4183 ;
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27
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Yao Z, Ge L, Yang W, Xia M, Ji X, Jin M, Tang J, Dienstmaier J. Finite Dilution Inverse Gas Chromatography as a Versatile Tool To Determine the Surface Properties of Biofillers for Plastic Composite Applications. Anal Chem 2015; 87:6724-9. [DOI: 10.1021/acs.analchem.5b01004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhitong Yao
- College of Materials
Science and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Liuqin Ge
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Wenye Yang
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Meisheng Xia
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Xiaosheng Ji
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Meiqing Jin
- College of Materials
Science and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Junhong Tang
- College of Materials
Science and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jürgen Dienstmaier
- Surface Measurement
Systems Limited, 5 Wharfside, Rosemont
Road, London, HA0 4PE, United Kingdom
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28
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Mohammadi-Jam S, Waters K. Inverse gas chromatography applications: a review. Adv Colloid Interface Sci 2014; 212:21-44. [PMID: 25092057 DOI: 10.1016/j.cis.2014.07.002] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/07/2014] [Accepted: 07/08/2014] [Indexed: 11/27/2022]
Abstract
Inverse gas chromatography (IGC) is a versatile, powerful, sensitive and relatively fast technique for characterizing the physicochemical properties of materials. Due to its applicability in determining surface properties of solids in any form such as films, fibres and powders of both crystalline and amorphous structures, IGC became a popular technique for surface characterization, used extensively soon after its development. One of the most appealing features of IGC that led to its popularity among analytical scientists in early years was its similarity in principle to analytical gas chromatography (GC). The main aspect which distinguishes IGC experiments from conventional GC is the role of mobile and stationary phases. Contrary to conventional GC, the material under investigation is placed in the chromatographic column and a known probe vapour is used to provide information on the surface. In this review, information concerning the history, instrumentation and applications is discussed. Examples of the many experiments developed for IGC method are selected and described. Materials that have been analysed include polymers, pharmaceuticals, minerals, surfactants, and nanomaterials. The properties that can be determined using the IGC technique include enthalpy and entropy of sorption, surface energy (dispersive and specific components), work of co/adhesion, miscibility and solubility parameters, surface heterogeneity, glass transition temperature, and specific surface area.
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29
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Decoupling the Contribution of Surface Energy and Surface Area on the Cohesion of Pharmaceutical Powders. Pharm Res 2014; 32:248-59. [DOI: 10.1007/s11095-014-1459-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/02/2014] [Indexed: 11/28/2022]
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30
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Kołodziejek J, Voelkel A, Heberger K. Characterization of Hybrid Materials by Means of Inverse Gas Chromatography and Chemometrics. J Pharm Sci 2013; 102:1524-31. [DOI: 10.1002/jps.23489] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/31/2013] [Accepted: 02/08/2013] [Indexed: 11/11/2022]
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31
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Investigating the applicability of inverse gas chromatography to binary powdered systems: An application of surface heterogeneity profiles to understanding preferential probe-surface interactions. Int J Pharm 2013; 445:39-46. [DOI: 10.1016/j.ijpharm.2013.01.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 01/24/2013] [Accepted: 01/25/2013] [Indexed: 11/21/2022]
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