NAMS 2002 Workshop - ICOM 2008

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[4] M. Michau, M. Barboiu, R. Caraballo, C. Arnal- Hérault, A. van der Lee, Chem. Eur. J. <strong>2008</strong>, 14, 1776-1783. [5] C. Arnal-Herault, A. Pasc-Banu, M. Barboiu A. van der Lee, Angew. Chem. Int. Ed. 2007, 46, 4268- 4272.
Fuel Cells II – 4 Thursday July 17, 10:30 AM-11:00 AM, Wai’anae Ion-Exchange Membranes from Side-Chain Sulfonated Poly(arylene ether)s J. Meier-Haack (Speaker), Leibniz Institute of Polymer Research Dresden, Dresden, Germany - mhaack@ipfdd.de K. Schlenstedt, Leibniz Institute of Polymer Research Dresden, Dresden, Germany W. Butwilowski, Leibniz Institute of Polymer Research Dresden, Dresden, Germany C. Vogel, Leibniz Institute of Polymer Research Dresden, Dresden, Germany Polymer electrolyte membranes and in particular cation exchange membranes are used in a broad field of applications such as low fouling membranes in water and wastewater treatment, solid polymer electrolytes in electrochemical processes (e.g. low temperature fuel cells) or as ion-selective membranes in sensors. Despite of some drawbacks, today poly(perfluoroalkylsulfonic acid)s such as Nafion® and similar materials are still the standard membrane materials for polymer electrolyte fuel cells (PEMFC). The disadvantages of these materials and the demand for new energy conversion/production systems have initiated world-wide research activities on the development of alternative membrane materials for PEMFC. Among the various materials suggested, sulfonated poly(arylene ether)s are seen as the most promising ones due to their outstanding chemical and thermal stabilities, high glass transition temperature (Tg) as well as their good solubility in dipolar aprotic solvents such as N-methyl-2pyrrolidone (NMP), dimethylsulfoxide (DMSO) or N,N- dimethylacetamide (DMAc) and film forming properties. However these materials have two main disadvantages over Nafion-like materials, namely: (1) the hydrolytic instability of aromatic sulfonic acids [1] and (2) the lower acidity of the sulfonic acid groups, leading to lower conductivities at comparable ion-exchange capacities. Vogel et al. reported on a surprisingly high hydrolytic stability of polystyrene sulfonic acid [1]. First indications of hydrolysis were found only after treatment in water at 200°C for 24h. On the other hand poly(styrene sulfonic acid) is not suitable for applications in fuel cells due to its chemical instability arising from the tertiary carbon in the polymer backbone. These results led us to the idea to prepare chemically stable poly(arylene ethers) with a pending phenyl ring, which can be sulfonated selectively, in order to mimic poly(styrene sulfonic acid). Having the sulfonic acid group in the side chain has further advantages as has been described in the literature by Lafitte et al. [2 - 4] or Guiver et al. [5]. Recently, we reported on poly(arylene ether)s prepared from bis-(4- fluorophenyl)-sulfone bis-(4-hydroxyphenyl)- sulfone and phenylhydroquinone [6, 7], which can be selectively sulfonated at the external benzene ring. Secondly, to
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ICOM 2008 Oral Presentation Proceed
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Professor Yoram Cohen Professor Joh
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ICOM 2008 Staff: The University of
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ICOM 2008 Workshop Schedule: Saturd
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Monday, July 14 - Afternoon Session
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Tuesday, July 15 - Afternoon Sessio
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8:15AM 8:35AM EMS Barrer Prize (Mau
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Friday, July 18 - Morning Sessions
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Oral Presentation Abstracts Morning
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Gas Separation I - 1 - Keynote Mond
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esulting permeability selectivity o
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chain packing. To ensure a well pha
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Gas Separation I - 5 Monday July 14
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satisfactory way the corresponding
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Drinking and Wastewater Application
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an adjusted water management in the
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prospect for new energy sources as
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oxygen removal to the desired pH. C
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(Cl - , SO4 2- , As(V)) and water t
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[1] R. Lima de Miranda, J. Kruse, K
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Polymeric Membranes I - 4 Monday Ju
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Polymeric Membranes I - 5 Monday Ju
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Biomedical and Biotechnology I - 1
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Acknowledgments The Authors acknowl
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isolation of CD34+ cells was achiev
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membranes were then challenged with
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in crossflow mode operation were in
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hydroxide. For Mg/Ca = 0, the fouli
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improvement of filterability also t
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scale where fouling rates are commo
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observed in two subsequence phenome
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Membrane Modeling I - Fundamental A
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Membrane Modeling I - Fundamental A
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of the impact of the operating para
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Oral Presentation Abstracts Afterno
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Hybrid and Novel Processes I - 2 Mo
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Arora, M.B., J.A. Hestekin, S.W. Sn
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Conclusions Reverse electrodialysis
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energy recovery. This is a remarkab
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eaction with mediator due to the co
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Nanofiltration and Reverse Osmosis
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4.3x10 -6 to 7.4x10 -6 cm 2 /s. Bas
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The development of these membranes
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permeability, defined as water perm
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supports including charged (PSF/SPE
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[4] L. M. Robeson, Journal of Membr
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y conventional polymers and provide
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[3] P.M. Budd, K.J. Msayib, C.E. Ta
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Nanostructured Membranes I - 5 Mond
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Fuel Cells I - 1 Monday July 14, 2:
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investigated at first. As a result,
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Desalination I - 2 Monday July 14,
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Composite Polymeric Membrane Format
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NAMS Alan S. Michaels Award - 1a Tu
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NAMS Alan S. Michaels Award - 2 Tue
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opportunities for improving membran
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NAMS Alan S. Michaels Award - 4b Tu
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[4] K. Vanherck et al. Accepted for
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accumulation had a strong effect on
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and, if so, to develop correlations
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non-porous and porous membranes are
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[2] Palmeri, J., Sandeaux, R. Sande
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fouling. Information obtained from
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This work performed under the auspi
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etween Ru(bi-pyridine)3 2+ and meth
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[1] M. Barboiu, C. Luca, C. Guizard
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Nanostructured Membranes II - 5 Tue
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Nanostructured Membranes II - 6 Tue
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than 10 nm. XRD data suggest that t
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Pervaporation and Vapor Permeation
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ethanol/butanol (non solvent) combi
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forward osmosis, the RO process is
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Osmotically Driven Membrane Process
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References: [1] Stupp, S. I.; Lebon
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temperatures might bring about the
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References [1] S. Benita, Microenca
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solvent, were investigated (where a
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ease of manipulation as this allows
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Horizontal shrinkage does not have
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Absorption of water was determined
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Gas Separation II - 1 - Keynote Tue
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Gas Separation II - 2 Tuesday July
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concentration. These results are co
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Gas Separation II - 5 Tuesday July
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will be shown that homogeneous film
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which can adsorb on the surface of
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were collected, the viable bacteria
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pressure, and permporosimetry with
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Inorganic Membranes I - 3 Tuesday J
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Membrane Fouling - UF & Water Treat
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Membrane Modeling II - Gas Separati
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[10] Wang BG, Lv HL, Yang JC. Chem
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Membrane and Surface Modification I
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Gas Separation III - 1 - Keynote We
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Gas Separation III - 2 Wednesday Ju
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separation was next blended with di
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Polymeric Membranes II - 1 - Keynot
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Polymeric Membranes II - 3 Wednesda
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5. Erdodi, G.; Kennedy, J. P.; Prog
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observed for different locations in
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Biomedical and Biotechnology II - 3
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applied in the first two fields wil
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distribution of SBMA units within t
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5500 ppm (15 mM) was lowered to 30
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increasing the effective size of th
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etween 0 and 1), the automatic feed
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Membrane Modeling III - Process Sim
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Membrane Modeling III - Process Sim
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models developed suggests that ther
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start level has a huge impact on th
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Ultra- and Microfiltration I - Tran
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all three binary protein UF systems
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Synthetic solutions of ±-lactalbum
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Gas Separation IV - 2 Thursday July
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6. T. C. Merkel, Z. He, I. Pinnau,
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Page 339 and 340: EMS Barrer Prize - 1b Thursday July
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Page 347 and 348: therapy options have been modelled
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Page 397 and 398: 5. Conclusion In this work, the evo
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oth 15±5 kDa, which suggests that
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Atomic Force Microscopy (AFM), and
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y single gas permeation experiments
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PDMS toplayers were only partially
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noting that cross-linking agents co
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such extended parameter space in th
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Hybrid Membranes - 6 Thursday July
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Plenary Lecture III Friday July 18.
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Gas Separation V - 1 - Keynote Frid
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References: [1] H. Lin, E. Van Wagn
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elative contributions of Fickian di
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Gas Separation V - 4 Friday July 18
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Gas Separation V - 6 Friday July 18
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Electron Microscopy (TEM) analyses
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- Hybrid RO train: A hybrid RO trai
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concentration as well as on the sod
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scaling deposits in the DCMD device
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Silica colloidal solution with diff
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Membrane Fouling IV - RO & Desalina
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Polyacrylonitrile (PAN) UF membrane
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the polymer dope was PEI (12 wt%),
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Inorganic Membranes III - 1 - Keyno
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Inorganic Membranes III - 2 Friday
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CO2/H2 selectivity at high temperat
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ammonia complexes in aqueous soluti
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possible to have a membrane capable
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fired boiler flue gas, SOx and merc
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EPR/Ago/p-benzoquinone composite sh
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elated to the presence of free elec
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surroundings. When the temperature
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that no absorbent was detected in t
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days of filtration from 120 to 7-10
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was performed to restore membrane f
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with the SRT of 65 days, no correla
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Results Critical flux measurements
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MLSS is not directly proportional t
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Fuel Cells III - 2 Friday July 18,
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Fuel Cells III - 4 Friday July 18,
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Ultra- and Microfiltration III - Me
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can be deduced from the imaginary p
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membranes. The analysis of the ligh
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Membrane Contactors - 2 Friday July
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absorption liquid in the pores of t
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Packaging and Barrier Materials - 1
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Historically, all the approaches de
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