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Artykuły w czasopismach na temat „Membrane”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Efome, Johnson E., Fan Yang, Dipak Rana, Takeshi Matsuura, and Christopher Lan. "Functionalized PVDF Nanofiber Membranes for Desalination by Direct Contact Membrane Distillation." International Journal of Materials Science and Engineering 6, no. 2 (2018): 67–71. http://dx.doi.org/10.17706/ijmse.2018.6.2.67-71.

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Petrauskas, Karolis. "Kompiuterinis biojutiklių su perforuota ir selektyvia membrana modeliavimas vienmačiu keturių sluoksnių modeliu." Informacijos mokslai 50 (January 1, 2009): 328–33. http://dx.doi.org/10.15388/im.2009.0.3217.

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Straipsnyje pateikiamas vienmatis biojutiklio su perforuota ir selektyvia membrana modelis. Šis modelis sudarytas pakeičiant perforuotą membraną dviem homogeniškais sluoksniais atitinkamai membranos dalims, kur skylutės yra užpildytos fermento ir kur fermento nėra. Pasiūlytas modelis buvo ištirtas vykdant skaitinius eksperimentus, kad būtų nustatytos sąlygos, kuriomis jis gali būti taikomas tiksliam biojutiklio veiksmo modeliavimui. Šio modelio tikslumas buvo vertinamas lyginant juo gaunamus rezultatus su dvimačio modelio rezultatais. Pasiūlyto modelio rezultatai taip pat buvo palyginti su vie

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3

Li, Xue, Jun Pan, Francesca Macedonio, et al. "Fluoropolymer Membranes for Membrane Distillation and Membrane Crystallization." Polymers 14, no. 24 (2022): 5439. http://dx.doi.org/10.3390/polym14245439.

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Fluoropolymer membranes are applied in membrane operations such as membrane distillation and membrane crystallization where hydrophobic porous membranes act as a physical barrier separating two phases. Due to their hydrophobic nature, only gaseous molecules are allowed to pass through the membrane and are collected on the permeate side, while the aqueous solution cannot penetrate. However, these two processes suffer problems such as membrane wetting, fouling or scaling. Membrane wetting is a common and undesired phenomenon, which is caused by the loss of hydrophobicity of the porous membrane e

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Burganos, Vasilis N. "Membranes and Membrane Processes." MRS Bulletin 24, no. 3 (1999): 19–22. http://dx.doi.org/10.1557/s0883769400051861.

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Membrane separation science has enjoyed tremendous progress since the first synthesis of membranes almost 40 years ago, which was driven by strong technological needs and commercial expectations. As a result, the range of successful applications of membranes and membrane processes is continuously broadening. An additional change lies in the nature of membranes, which is now extended to include liquid and gaseous materials, biological or synthetic. Membranes are understood to be thin barriers between two phases through which transport can take place under the action of a driving force, typicall

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5

Böddeker, K. W. "Membranes and Membrane Processes." Journal of Membrane Science 31, no. 2-3 (1987): 343–44. http://dx.doi.org/10.1016/s0376-7388(00)82238-3.

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Meares, P. "Membranes and membrane processes." Polymer 28, no. 7 (1987): 1232. http://dx.doi.org/10.1016/0032-3861(87)90271-0.

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7

Darmani, H., and W. T. Coakley. "Membrane-membrane interactions: parallel membranes or patterned discrete contacts." Biochimica et Biophysica Acta (BBA) - Biomembranes 1021, no. 2 (1990): 182–90. http://dx.doi.org/10.1016/0005-2736(90)90032-j.

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8

Suka, Irwan Ginting, Wasinton Simanjuntak, and Eniya Listiani Dewi. "Pembuatan Membran Polimer Elektrolit Berbasis Polistiren Akrilonitril (SAN) untuk Aplikasi Direct Methanol Fuel Cell." Jurnal Natur Indonesia 13, no. 1 (2012): 1. http://dx.doi.org/10.31258/jnat.13.1.1-6.

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In this study, electrolyte membranes based on polystyrene acrylonitrile (SAN) for Direct Methanol Fuel Cell applicationwere prepared. The preparation was carried out in two steps. The first step was introduction of additives, silicaand zeolite, as reinforcing agent on SAN, to obtain silica-reinforced SAN membrane, specified as SAN-Si, andzeolite-reinforced SAN membranae, specified as SAN-Z. The two reinforced membranes were then subjected tosulphonation using sulphuric acid, and the sulphonated membranes are specified as S-SAN-Si and S-SAN-Z,respectively. The characteristics of the membrane we

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9

Kim, Hwan, June Seok Choi, and Sang Ho Lee. "Effect of Membrane Material Properties on Efficiency of Membrane Distillation." Materials Science Forum 695 (July 2011): 85–88. http://dx.doi.org/10.4028/www.scientific.net/msf.695.85.

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Membrane distillation (MD) integrates membrane technology with evaporation process to produce fresh water from seawater or contaminated water. In this study, we investigated the effect of membrane materials on the efficiency of membrane distillation process. Flat sheet hydrophobic membranes (PVDF, PTFE) with different characterizes were chosen as well as hollow fiber membranes (PE). Laboratory-scale systems were developed for initial screening of various membranes. The performance of the membrane was analyzed in terms of water permeability and salt rejection. Synthetic seawater (TDS = 35,000 m

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10

Baumgart, E., A. Völkl, T. Hashimoto, and H. D. Fahimi. "Biogenesis of peroxisomes: immunocytochemical investigation of peroxisomal membrane proteins in proliferating rat liver peroxisomes and in catalase-negative membrane loops." Journal of Cell Biology 108, no. 6 (1989): 2221–31. http://dx.doi.org/10.1083/jcb.108.6.2221.

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Treatment of rats with a new hypocholesterolemic drug BM 15766 induces proliferation of peroxisomes in pericentral regions of the liver lobule with distinct alterations of the peroxisomal membrane (Baumgart, E., K. Stegmeier, F. H. Schmidt, and H. D. Fahimi. 1987. Lab. Invest. 56:554-564). We have used ultrastructural cytochemistry in conjunction with immunoblotting and immunoelectron microscopy to investigate the effects of this drug on peroxisomal membranes. Highly purified peroxisomal fractions were obtained by Metrizamide gradient centrifugation from control and treated rats. Immunoblots p

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11

Wang, Jing, Jennifer B. Ptacek, Karla Kirkegaard, and Esther Bullitt. "Double-membraned Liposomes Sculpted by Poliovirus 3AB Protein." Journal of Biological Chemistry 288, no. 38 (2013): 27287–98. http://dx.doi.org/10.1074/jbc.m113.498899.

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Infection with many positive-strand RNA viruses dramatically remodels cellular membranes, resulting in the accumulation of double-membraned vesicles that resemble cellular autophagosomes. In this study, a single protein encoded by poliovirus, 3AB, is shown to be sufficient to induce the formation of double-membraned liposomes via the invagination of single-membraned liposomes. Poliovirus 3AB is a 109-amino acid protein with a natively unstructured N-terminal domain. HeLa cells transduced with 3AB protein displayed intracellular membrane disruption; specifically, the formation of cytoplasmic in

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12

Mori, Kenichi, Yosuke Imai, Tsubasa Takaoka, Koji Iwamoto, Hideyoshi Fuji, and Tyuji Hoshino. "2P270 Database of Lipid Membrane Structures : Computational Analyses of Model Membranes(40. Membrane structure,Poster Session,Abstract,Meeting Program of EABS & BSJ 2006)." Seibutsu Butsuri 46, supplement2 (2006): S363. http://dx.doi.org/10.2142/biophys.46.s363_2.

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Saleh, Balideh*1 Tim G. Joseph2. "MEMBRANE CORRECTION FOR LATEX AND NEOPRENE/LATEX MEMBRANE AT TRIAXIAL COMPRESSION TEST." GLOBAL JOURNAL OF ADVANCED ENGINEERING TECHNOLOGIES AND SCIENCES 5, no. 7 (2018): 38–43. https://doi.org/10.5281/zenodo.1326415.

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The influence of a rubber membrane is crucial in a triaxial compression test. Previous research has introduced methods such as compression shell theory and hoop tension theory to suggest a membrane correction for different types of specimen deformation during tests. Latex membranes often do not perform well if sharp particles are present due to membranes being punctured easily. Neoprene/Latex membranes perform better in triaxial compression tests as they are more resistant to punctures. In this research, a maximum error due to membrane performance was calculated for latex and Neoprene/Latex me

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14

Guiet-Bara, Andree, and Michel Bara. "831 — The human amniotic membrane: One membrane or several membranes?" Bioelectrochemistry and Bioenergetics 15, no. 3 (1986): 427–29. http://dx.doi.org/10.1016/0302-4598(86)85030-9.

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15

Liu, Yan Jun, Chun Ying Lv, and Jia Yang. "Studies of Protein Absorption and Fouling Behavior on Amphoteric Charged Polypropylene Microfiltration Membrane." Key Engineering Materials 467-469 (February 2011): 2024–29. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.2024.

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To improve the antifouling property of PP membrane, a series of amphoteric charged membranes was prepared by the introduction of cysteine on polypropylene membrane. The modified membrane presents higher water flux than original membrane due to the improved hydrophilicity. It was proved by zeta potential that modified membrane inherited the amphoteric characteristic from cysteine. The isoelectric point of modified membranes are at pH 7.2 and 6.5 for 7.6% and 16.1% grafted membranes respectively. Due to the amphoteric characteristic of both modified membrane and BSA, electrical repulsion exsists

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16

Pevan Kumar, B., and M. Saravanan. "Membrane Distillation." International Journal of Science and Research (IJSR) 10, no. 11 (2021): 767–72. https://doi.org/10.21275/sr211112090158.

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17

Saha, S. N. "Membrane Separations." Current Research in Agriculture and Farming 3, no. 6 (2022): 19–33. http://dx.doi.org/10.18782/2582-7146.180.

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Membrane technology is widely utilised in industries for separation, concentration, filtering, and extraction operations. Membrane technology carries out various applications by utilising simple and specially designed semi-permeable membranes. It uses little energy and is thus considered a green technology. Ultrafiltration (UF), Microfiltration (MF), Nano-filtration (NF), and Reverse osmosis (RO) are membrane filtration methods that have a major influence on the organoleptic and nutritional qualities of juice. The adoption of a membrane method linked with enzymatic hydrolysis resulted in clari

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18

Chen, Kaikai, Wei Zhao, Changfa Xiao, Hui Zhu, and Qiming Wang. "Membrane Fouling Mechanism of HTR-PVDF and HMR-PVDF Hollow Fiber Membranes in MBR System." Water 14, no. 16 (2022): 2576. http://dx.doi.org/10.3390/w14162576.

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Membrane fouling has attracted a lot of attention in the membrane separation field. Herein, we selected the homogeneous-reinforced polyvinylidene fluoride (HMR-PVDF) and heterogeneous-reinforced polyvinylidene fluoride (HTR-PVDF) hollow fiber membranes to investigate the fouling mechanism of membranes in membrane bioreactor (MBR) systems. The filtration models, membrane adsorption experiment, and membrane resistance distribution after a long or short time operation were assessed to compare their antifouling properties in order to verify the optimal membrane. The outer surface, shown by an SEM

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19

Winocour, Peter D., Cezary Watala, Dennis W. Perry, and Raelene L. Kinlough-Rathbone. "Decreased Platelet Membrane Fluidity Due to Glycation or Acetylation of Membrane Proteins." Thrombosis and Haemostasis 68, no. 05 (1992): 577–82. http://dx.doi.org/10.1055/s-0038-1646320.

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SummaryPlatelets from diabetic subjects and animals are hypersensitive to agonists in vitro. Membrane fluidity modulates cell function and previously we observed reduced membrane fluidity in platelets from diabetic patients associated with hypersensitivity to thrombin. We previously reported that decreased fluidity of isolated platelet membranes from diabetic patients is associated with increased glycation of platelet membrane proteins, but not with any change in the cholesterol to phospholipid molar ratio. We have now examined in vitro whether incubation of platelet membranes in a high glucos

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20

Izquierdo-Gil, M. A., J. P. G. Villaluenga, S. Muñoz, and V. M. Barragán. "The Correlation between the Water Content and Electrolyte Permeability of Cation-Exchange Membranes." International Journal of Molecular Sciences 21, no. 16 (2020): 5897. http://dx.doi.org/10.3390/ijms21165897.

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The salt permeability through three commercial cation-exchange membranes with different morphologies is investigated in aqueous NaCl solutions. Ion-exchange membranes (IEMs) find application in different processes such as electrodialysis, reverse osmosis, diffusion dialysis, membrane electrolysis, membrane fuel cells and ion exchange bioreactors. The aim of this paper is the experimental determination of the electrolyte permeability in the following membranes: MK-40 membrane, Nafion N324 membrane and Nafion 117 membrane. The latter is selected as being a reference membrane. The effect of an in

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21

M, Moumaris. "Cell Membrane Compartmentalization and Membrane Dynamics during Plasmodium Infection." International Journal of Zoology and Animal Biology 7, no. 6 (2024): 1–5. https://doi.org/10.23880/izab-16000637.

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Plasmodium undergoes a sophisticated invasion process to enter red blood cells (RBCs), a critical step in its life cycle. The invasion process is intricately regulated and involves a series of well-coordinated events. Membrane compartmentalization and dynamics play a central role in this process. The parasite actively reorganizes its membranes and manipulates those of the host cell to facilitate its entry. Once inside, it resides within a parasitophorous vacuole, a membrane-bound compartment that shields it from the host’s immune defenses while allowing it to exploit host resources. Understand

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22

Kamaludin, Roziana, Lubna Abdul Majid, Mohd Hafiz Dzarfan Othman, et al. "Polyvinylidene Difluoride (PVDF) Hollow Fiber Membrane Incorporated with Antibacterial and Anti-Fouling by Zinc Oxide for Water and Wastewater Treatment." Membranes 12, no. 2 (2022): 110. http://dx.doi.org/10.3390/membranes12020110.

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The addition of antibacterial material to hollow fiber membranes improves the membrane anti-biofouling characteristics. Antibacterial membranes were fabricated in this study to improve membrane function while also extending membrane lifetime. Neat polyvinylidene difluoride (PVDF) and PVDF hollow fiber membrane with the incorporation of antibacterial agent zinc oxide (ZnO) nanoparticles with various loading (2.5–7.5 wt.%) were fabricated by using dry/wet spinning method. The membrane structure, particle distribution, functional group, hydrophilicity, and pore size of each membrane were all asse

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23

Szwast, Maciej, and Teresa Suchecka. "Membranes: Improving batch membrane filtration." Filtration + Separation 50, no. 2 (2013): 38–41. http://dx.doi.org/10.1016/s0015-1882(13)70080-6.

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Ding, Yi, Yong Yao, and Francesca M. Marassi. "Membrane Protein Structure Determinationin Membrana." Accounts of Chemical Research 46, no. 9 (2013): 2182–90. http://dx.doi.org/10.1021/ar400041a.

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Pearce, Graeme. "Introduction to membranes: Membrane selection." Filtration & Separation 44, no. 3 (2007): 35–37. http://dx.doi.org/10.1016/s0015-1882(07)70083-6.

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Ramírez, P., S. Mafé, J. A. Manzanares, and J. Pellicer. "Membrane potential of bipolar membranes." Journal of Electroanalytical Chemistry 404, no. 2 (1996): 187–93. http://dx.doi.org/10.1016/0022-0728(95)04378-0.

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Drioli, E., V. Calabro, and Y. Wu. "Microporous membranes in membrane distillation." Pure and Applied Chemistry 58, no. 12 (1986): 1657–62. http://dx.doi.org/10.1351/pac198658121657.

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Hwang, Sun-Tak. "Inorganic membranes and membrane reactors." Korean Journal of Chemical Engineering 18, no. 6 (2001): 775–87. http://dx.doi.org/10.1007/bf02705597.

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Brijder, Robert, Matteo Cavaliere, Agustín Riscos-Núñez, Grzegorz Rozenberg, and Dragoş Sburlan. "Membrane Systems with Marked Membranes." Electronic Notes in Theoretical Computer Science 171, no. 2 (2007): 25–36. http://dx.doi.org/10.1016/j.entcs.2007.05.005.

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Ćurić, Iva, Davor Dolar, Josip Horvat, and Katia Grgić. "Effect of Textile Wastewater Secondary Effluent on UF Membrane Characteristics." Polymers 14, no. 10 (2022): 2035. http://dx.doi.org/10.3390/polym14102035.

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The influence of textile wastewater (TWW) secondary effluent on ultrafiltration (UF) membrane characteristics was investigated. TWW treated with a membrane bioreactor was subjected to four commercial UF membranes (2, 3, 5, and 10 kDa). Both the pristine membranes and the membranes after TWW secondary effluent treatment were characterized. Surface roughness, microscopic analysis of the membrane surface and cross-section, zeta potential, contact angle, membrane composition, and membrane flux were compared. After treatment of secondary effluent, the zeta potential decreased for 5 and 10 kDa membr

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31

Tan, Yong Zen, Nur Hashimah Alias, Mohd Haiqal Abd Aziz, Juhana Jaafar, Faten Ermala Che Othman, and Jia Wei Chew. "Progress on Improved Fouling Resistance-Nanofibrous Membrane for Membrane Distillation: A Mini-Review." Membranes 13, no. 8 (2023): 727. http://dx.doi.org/10.3390/membranes13080727.

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Nanofibrous membranes for membrane distillation (MD) have demonstrated promising results in treating various water and wastewater streams. Significant progress has been made in recent decades because of the development of sophisticated membrane materials, such as superhydrophobic, omniphobic and Janus membranes. However, fouling and wetting remain crucial issues for long-term operation. This mini-review summarizes ideas as well as their limitations in understanding the fouling in membrane distillation, comprising organic, inorganic and biofouling. This review also provides progress in developi

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Nicolson, Garth L., and Gonzalo Ferreira de Mattos. "A Brief Introduction to Some Aspects of the Fluid–Mosaic Model of Cell Membrane Structure and Its Importance in Membrane Lipid Replacement." Membranes 11, no. 12 (2021): 947. http://dx.doi.org/10.3390/membranes11120947.

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Early cell membrane models placed most proteins external to lipid bilayers in trimolecular structures or as modular lipoprotein units. These thermodynamically untenable structures did not allow lipid lateral movements independent of membrane proteins. The Fluid–Mosaic Membrane Model accounted for these and other properties, such as membrane asymmetry, variable lateral mobilities of membrane components and their associations with dynamic complexes. Integral membrane proteins can transform into globular structures that are intercalated to various degrees into a heterogeneous lipid bilayer matrix

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Asal Gzar, Hatem, and Zahraa Khalid shhaieb. "The Removal of Terasil Navy Blue Dye from Al-Kut Textile Wastewater Using Membrance Technologies." International Journal of Engineering & Technology 7, no. 4.20 (2018): 557. http://dx.doi.org/10.14419/ijet.v7i4.20.26418.

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The current work was devoted to study the operating feasibility using membranes which were manufactured locally, two membrance types were tested nanofiltration (NF) and ultrafiltration (UF) membrane to treat the effluent of Al-kut textile industry. Based on the usage rate in Iraq textile industries, terasil navy blue (TNB) is one of the common disperse dyes discharged in effluent wastewater. Therefore this type of dyes was selected to experience in this study. Parameters such as effects of TNB concentration, feed temperature and operating pressure and its effect on permeate flux noticed and th

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Rodríguez-Sáez, Laura, Junkal Landaburu-Aguirre, Eloy García-Calvo, and Serena Molina. "Application of Recycled Ultrafiltration Membranes in an Aerobic Membrane Bioreactor (aMBR): A Validation Study." Membranes 14, no. 7 (2024): 149. http://dx.doi.org/10.3390/membranes14070149.

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A validation study using recycled ultrafiltration membranes (r-UF) on an aerobic membrane bioreactor (aMBR) was conducted for the first time. Four different polyethersulfone (PES) membranes were tested using synthetic urban wastewater (COD 0.4–0.5 g/L) during two experimental periods: (i) recycled ultrafiltration membrane (r-UF) and commercial UF membrane (molecular weight cut-off (MWCO) 150 kDa) (c-150 kDa); (ii) r-UF membrane modified by dip-coating using catechol (CA) and polyethyleneimine (PEI) (mr-UF) and c-20 kDa membrane. Permeability, fouling behavior, and permeate quality were evaluat

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Alghamdi, Ahmed. "Preparation of Nano Membranes with Triethylenetetramine Dihydrochloride (TETA-DH) and Multiwalled Carbon Nanotubes (MWCNT) for Seawater Desalination." Polish Journal of Chemical Technology 26, no. 2 (2024): 1–7. http://dx.doi.org/10.2478/pjct-2024-0011.

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Abstract Seawater Desalination uses hydrophobic membranes. Many techniques have been developed to improve membrane hydrophobicity by depositing particles on the membrane surface. In this study, a nanocomposite membrane utilizing Triethylenetetramine (TETA) is suggested. The membrane incorporates Multiwalled Carbon Nanotubes (MWCNT) in conjunction with Triethylenetetramine Dihydrochloride (TETA-DH). In water bath, different percentages of TETA-DH films are formed. Electro-spin fabrication of MWCNTs using TETA-DH yields smooth, low-pore membranes. Membranes and their characteristics are identifi

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Seshimo, Masahiro, Hiromi Urai, Kazuaki Sasa, et al. "Bench-Scale Membrane Reactor for Methylcyclohexane Dehydrogenation Using Silica Membrane Module." Membranes 11, no. 5 (2021): 326. http://dx.doi.org/10.3390/membranes11050326.

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Methylcyclohexane-toluene system is one of the most promising methods for hydrogen transport/storage. The methylcyclohexane dehydrogenation can be exceeded by the equilibrium conversion using membrane reactor. However, the modularization of the membrane reactor and manufacturing longer silica membranes than 100 mm are little developed. Herein, we have developed silica membrane with practical length by a counter-diffusion chemical vapor deposition method, and membrane reactor module bundled multiple silica membranes. The developed 500 mm-length silica membrane had high hydrogen permselective pe

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Kwan, Chiu-Yin. "Aggregation of smooth muscle membranes and its use in the preparation of plasma membrane enriched fraction from gastric fundus smooth muscle." Biochemistry and Cell Biology 64, no. 6 (1986): 535–42. http://dx.doi.org/10.1139/o86-075.

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Microsomal membranes isolated from rat gastric fundus smooth muscle by differential centrifugation aggregate substantially in the presence of the divalent metal ion Mg2+ or Ca2+. The magnitude of cation-induced membrane aggregation is higher for Ca2+ than for Mg2+, but the ion concentration required for half-maximum membrane aggregation (K0.5 value) is similar for Mg2+ and Ca2+. Cation-induced membrane aggregation is suppressed by high ionic strength and low pH of the medium. Cation-induced membrane aggregation of mitochondrial membrane and plasma membrane enriched fractions differ in the rate

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Yeszhanov, A. B. "HYDROPHOBIZATION OF PET TRACK-ETCHED MEMBRANES FOR DIRECT CONTACT MEMBRANE DISTILLATION OF LIQUID RADIOACTIVE WASTES." Eurasian Physical Technical Journal 17, no. 2 (2020): 45–54. http://dx.doi.org/10.31489/2020no2/45-54.

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This article provides the results of liquid low-level radioactive wastes treatment by direct contact membrane distillation using polyethylene terephthalate hydrophobic track-etched membranes. The hydrophobization of track-etched membranes was carried out by UV-induced graft polymerization of triethoxyvinylsilane with styrene and coating with fluorine-containing silanes. Hydrophobic membranes were investigated by scanning electron microscope, Fourier-transform infrared spectroscopy, contact anglemeasurements, and liquid entry pressure analysis. Prepared membranes were tested in treatment of liq

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39

El-Beyrouthy, Joyce, and Eric Freeman. "Characterizing the Structure and Interactions of Model Lipid Membranes Using Electrophysiology." Membranes 11, no. 5 (2021): 319. http://dx.doi.org/10.3390/membranes11050319.

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The cell membrane is a protective barrier whose configuration determines the exchange both between intracellular and extracellular regions and within the cell itself. Consequently, characterizing membrane properties and interactions is essential for advancements in topics such as limiting nanoparticle cytotoxicity. Characterization is often accomplished by recreating model membranes that approximate the structure of cellular membranes in a controlled environment, formed using self-assembly principles. The selected method for membrane creation influences the properties of the membrane assembly,

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Ali, Asmadi, Rosli Mohd Yunus, Mohamad Awang, Anwar Johari, and Ramli Mat. "Effect of Cellulose Acetate Phthalate (CAP) on Characteristics and Morphology of Polysulfone/Cellulose Acetate Phthalate (PSf/CAP) Blend Membranes." Applied Mechanics and Materials 493 (January 2014): 640–44. http://dx.doi.org/10.4028/www.scientific.net/amm.493.640.

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Polysulfone (PSf) membrane is catogorized as hydrophobic membrane that easily fouled during membrane operation process. The presence of second hydrophilic polymer which added into membrane casting solutions plays a crucial role in adjusting the membrane properties. This hydrophilic polymer was employed in hydrophobic polymer membranes in order to improve hydrophilicity and performance as well as formed antifouling ultrafiltration (UF) membranes. In this study, a hydrophilic polymer, cellulose acetate phthalate (CAP) was added into polysulfone (PSf) membrane casting solutions by blending techni

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Ng, T. C. A., and H. Y. Ng. "Physico-chemical characterisation versus in situ micro-structural characterisation of membrane fouling in membrane bioreactors." Water Science and Technology 63, no. 8 (2011): 1781–87. http://dx.doi.org/10.2166/wst.2011.196.

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Fouling characteristics of aerobic submerged membrane bioreactors were analysed under two different membrane materials. Polyethersulfone (PES) membranes were found to foul faster at sub-critical flux than polyolefin (PO) membranes. Physico-chemical characterisation, by means of comparison of extracellular polymeric substances (EPS) and soluble microbial products (SMP) concentrations, as well as the mixed liquor suspended solids (MLSS) concentration were unable to explain the differences in membrane fouling of the contrasting membrane materials. The use of confocal laser scanning microscopy (CL

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Huang, Rui, Hui Pan, Xing Zheng, et al. "Effect of Membrane Pore Size on Membrane Fouling of Corundum Ceramic Membrane in MBR." International Journal of Environmental Research and Public Health 20, no. 5 (2023): 4558. http://dx.doi.org/10.3390/ijerph20054558.

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Ceramic membrane has emerged as a promising material to address the membrane fouling issue in membrane bioreactors (MBR). In order to optimize the structural property of ceramic membrane, four corundum ceramic membranes with the mean pore size of 0.50, 0.63, 0.80, and 1.02 μm were prepared, which were designated as C5, C7, C13, and C20, respectively. Long-term MBR experiments showed that the C7 membrane with medium pore size experienced the lowest trans-membrane pressure development rate. Both the decrease and increase of membrane pore size would lead to more severe membrane fouling in the MBR

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Mullineaux, Conrad W., and Lu-Ning Liu. "Membrane Dynamics in Phototrophic Bacteria." Annual Review of Microbiology 74, no. 1 (2020): 633–54. http://dx.doi.org/10.1146/annurev-micro-020518-120134.

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Photosynthetic membranes are typically densely packed with proteins, and this is crucial for their function in efficient trapping of light energy. Despite being crowded with protein, the membranes are fluid systems in which proteins and smaller molecules can diffuse. Fluidity is also crucial for photosynthetic function, as it is essential for biogenesis, electron transport, and protein redistribution for functional regulation. All photosynthetic membranes seem to maintain a delicate balance between crowding, order, and fluidity. How does this work in phototrophic bacteria? In this review, we f

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Kim, Young Ho, Hyun Kyu Lee, Youn Jin Park, et al. "Preparation of a Styrenesulfonate Grafted MWCNT/Nafion® Nanocomposite Membrane for Direct Methanol Fuel Cell Applications." Advanced Materials Research 347-353 (October 2011): 3685–90. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.3685.

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Styrenesulfonate grafted multi-walled carbon nanotubes (ss-MWCNTs) were prepared by a simple chemical reaction with soduim 4-styrenesulfonate to reinforce Nafion® membranes for use in direct methanol fuel cells (DMFCs). Although Nafion® membranes have excellent proton conductivity for fuel cell applications, methanol crossover through the Nafion® membrane remains a serious problem for DMFC applications. The prepared ss-MWCNTs had approximately 3.30 wt.% of sulfure and showed styrenesulfonate groups on the ss-MWCNTs. Then, the Nafion® membranes were reinforced with ss-MWCNTs to reduce methanol

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Jiang, Zhongyi, Liangyin Chu, Xuemei Wu, et al. "Membrane-based separation technologies: from polymeric materials to novel process: an outlook from China." Reviews in Chemical Engineering 36, no. 1 (2019): 67–105. http://dx.doi.org/10.1515/revce-2017-0066.

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Abstract During the past two decades, research on membrane and membrane-based separation process has developed rapidly in water treatment, gas separation, biomedicine, biotechnology, chemical manufacturing and separation process integration. In China, remarkable progresses on membrane preparation, process development and industrial application have been made with the burgeoning of the domestic economy. This review highlights the recent development of advanced membranes in China, such as smart membranes for molecular-recognizable separation, ion exchange membrane for chemical productions, antif

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Janas, T., T. Chojnacki, E. Swiezewska, and T. Janas. "The effect of undecaprenol on bilayer lipid membranes." Acta Biochimica Polonica 41, no. 3 (1994): 351–58. http://dx.doi.org/10.18388/abp.1994_4725.

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The influence of undecaprenol on phosphatidylcholine macrovesicular bilayer lipid membranes has been studied by electrophysiological techniques. The current-voltage characteristics, ionic transference numbers, the membrane conductance-temperature relationships and the membrane breakdown voltage were measured. The permeability coefficients for Na+ and Cl- ions, the activation energy of ion migration across the membrane, the membrane hydrophobic thickness and the membrane Young's modulus were determined. Undecaprenol increases membrane conductance, membrane capacitance, membrane ionic permeabili

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Olafiranye, Feyisayo, Win Kyaw, and Oladipupo Olafiranye. "Resolution of Dialyzer Membrane-Associated Thrombocytopenia with Use of Cellulose Triacetate Membrane: A Case Report." Case Reports in Medicine 2011 (2011): 1–3. http://dx.doi.org/10.1155/2011/134295.

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Blood and dialyzer membrane interaction can cause significant thrombocytopenia through the activation of complement system. The extent of this interaction determines the biocompatibility of the membrane. Although the newer synthetic membranes have been shown to have better biocompatibility profile than the cellulose-based membranes, little is known about the difference in biocompatibility between synthetic membrane and modified cellulose membrane. Herein, we report a case of a patient on hemodialysis who developed dialyzer-membrane-related thrombocytopenia with use of synthetic membrane (F200N

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Hussain, Arshad, and Mohammed Al-Yaari. "Development of Polymeric Membranes for Oil/Water Separation." Membranes 11, no. 1 (2021): 42. http://dx.doi.org/10.3390/membranes11010042.

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In this work, the treatment of oily wastewater was investigated using developed cellulose acetate (CA) membranes blended with Nylon 66. Membrane characterization and permeation results in terms of oil rejection and flux were compared with a commercial CA membrane. The solution casting method was used to fabricate membranes composed of CA and Nylon 66. Scanning Electron Microscopy (SEM) analysis was done to examine the surface morphology of the membrane as well as the influence of solvent on the overall structure of the developed membranes. Mechanical and thermal properties of developed blended

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Hussain, Arshad, and Mohammed Al-Yaari. "Development of Polymeric Membranes for Oil/Water Separation." Membranes 11, no. 1 (2021): 42. http://dx.doi.org/10.3390/membranes11010042.

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In this work, the treatment of oily wastewater was investigated using developed cellulose acetate (CA) membranes blended with Nylon 66. Membrane characterization and permeation results in terms of oil rejection and flux were compared with a commercial CA membrane. The solution casting method was used to fabricate membranes composed of CA and Nylon 66. Scanning Electron Microscopy (SEM) analysis was done to examine the surface morphology of the membrane as well as the influence of solvent on the overall structure of the developed membranes. Mechanical and thermal properties of developed blended

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Wan Zulaisa Amira, Wan Jusoh, and Abdul Rahman Sunarti. "Development of Hydrophobic Microporous Isotactic Polypropylene Membrane for Membrane Contactor Application." Advanced Materials Research 1113 (July 2015): 36–42. http://dx.doi.org/10.4028/www.scientific.net/amr.1113.36.

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Membrane Contactor (MC) is a well-known membrane technology to provide significant advantages required by industries. For MC, a hydrophobic membrane required as a barrier so that liquid absorbent and flue gaseous do not disperse with one another. However, the major concern in hydrophobic membrane is getting swelling by liquid after a short operating period. To minimize the swelling, this study focused on the exploration on membrane fabrication by Thermally Induced Phase Separation (TIPS). As the immersion in solvents is one of the important step to extract the diluent from membranes pores, the

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