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Artykuły w czasopismach na temat „Module à fibres creuses”

Autor: Grafiati

Data publikacji: 9 listopada 2024

Data aktualizacji: 31 lipca 2025

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1

Bourden, S., R. Ben Aim, and M. Mietton-Peuchot. "Etude par capteur optique du dépôt formé lors de la filtration d'une suspension de bentonite sur fibre creuse." Revue des sciences de l'eau 6, no. 2 (2005): 115–29. http://dx.doi.org/10.7202/705169ar.

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Lors de la filtration sur fibres creuses de suspensions de bentonite, il a été mis en évidence que le facteur limitant est la formation d'un dépôt à la surface de la fibre. Parlant de ces considérations, un dispositif optique a été mis au point pour suivre l'évolution spatio-temporelle du dépôt en cours de filtration sur fibre creuse à peau externe. Ainsi, il a pu être mis en évidence que l'influence de la vitesse d'écoulement n'est sensible qu'après un certain temps de filtration ou un certain volume filtré. Dans le domaine testé des faibles vitesses d'écoulement, il existe une période initia

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BLIN, Capucine, Marcos OLIVEIRA, Christel CAUSSERAND, Yannick FAYOLLE, and Vincent ROCHER. "Validation d’un protocole de vieillissement accéléré de membranes fibres creuses à l’échelle semi-industrielle." TSM 12 2023, TSM 12 2023 (December 20, 2023): 179–98. http://dx.doi.org/10.36904/tsm/202312179.

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Les membranes d’ultrafiltration se dégradent au cours de leurs années de fonctionnement, notamment à cause du colmatage et des nettoyages qu’elles subissent. Ce vieillissement provoque sur le long terme des problèmes d’exploitation sur les sites de traitement des eaux usées utilisant des bioréacteurs à membranes qui peuvent se traduire par des arrêts fréquents pour nettoyage et une diminution de la capacité filtrante pouvant aboutir à un remplacement des membranes. À ce jour, les mécanismes de vieillissement en bioréacteurs à membranes et leurs impacts sur les propriétés des membranes sont par

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3

Furferi, Rocco, and Monica Carfagni. "Colour Mixing Modelling and Simulation: Optimization of Colour Recipe for Carded Fibres." Modelling and Simulation in Engineering 2010 (2010): 1–9. http://dx.doi.org/10.1155/2010/487678.

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Colour matching between carded and finished fibres is an important challenge for textile industry. The straightforward approach for mixing together some differently coloured fibres in order to obtain a blend of a desired colour is to perform a trial and error approach starting from a given colour recipe and optimizing it with several attempts. Unfortunately, dyeing process so as the carding procedure may result in a carded fibre whose colour is different from the desired one. As a consequence textile companies have to modify the original recipe in order to reduce the gap between the colour of

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4

Núñez, R., I. Antón, and G. Sala. "Proof-of-concept of a building-integrated hybrid concentrator photovoltaics-lighting system." Lighting Research & Technology 50, no. 7 (2017): 1082–90. http://dx.doi.org/10.1177/1477153517719119.

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A hybrid concentrator photovoltaics (CPV) module that combines the production of electricity and transports sunlight is proposed as a means to reduce the energy needs of buildings by two complementary solar energy approaches. Both concepts share the need for a solar tracker and an infrastructure to concentrate the sunlight which allows a reduction in costs of the proposed system. The CPV part is a well-known technology to produce electricity that serves as a host for the light subpart that transports sunlight through optical fibres. Measurements of a proof-of-concept show that in nominal condi

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Logoń, Dominik, Krzysztof Schabowicz, Maciej Roskosz, and Krzysztof Fryczowski. "The Increase in the Elastic Range and Strengthening Control of Quasi Brittle Cement Composites by Low-Module Dispersed Reinforcement: An Assessment of Reinforcement Effects." Materials 14, no. 2 (2021): 341. http://dx.doi.org/10.3390/ma14020341.

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This paper presents the possibility of using low-module polypropylene dispersed reinforcement (E = 4.9 GPa) to influence the load-deflection correlation of cement composites. Problems have been indicated regarding the improvement of elastic range by using that type of fibre as compared with a composite without reinforcement. It was demonstrated that it was possible to increase the ability to carry stress in the Hooke’s law proportionality range in mortar and paste types of composites reinforced with low-module fibres, i.e., Vf = 3% (in contrast to concrete composites). The possibility of havin

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6

Soussan, L., M. Alquier, C. Guigui, S. Alfenore, S. Mathe, and C. Cabassud. "Characterization of the inline virus removal performances in hollow fibre modules by a new tracer electrochemically detected." Water Supply 13, no. 2 (2013): 507–14. http://dx.doi.org/10.2166/ws.2013.054.

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In a previous work, an innovative and patented method was presented, that is based on a new virus surrogate. This surrogate is an enzyme-labelled MS2 phage that is directly detectable and quantifiable by amperometry thanks to its induced enzymatic activity. In this work, this method was used to characterize the dynamics of virus removal in micromodules as a function of the membrane defect size and the transmembrane pressure (TMP). Experiments were performed at lab scale with an integer module and with modules made with the same fibres with calibrated holes (50, 100, 150 μm) made in one of the

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7

Sridang, P. Choksuchart, M. Heran, and A. Grasmick. "Influence of module configuration and hydrodynamics in water clarification by immersed membrane systems." Water Science and Technology 51, no. 6-7 (2005): 135–42. http://dx.doi.org/10.2166/wst.2005.0631.

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Different immersed membrane systems were compared according to the module configuration. Filtering concentrated aqueous suspensions under constant permeate flux, the hydraulic performances of the systems were evaluated and compared through parameters such as critical permeate flux notion and trans-membrane pressure variation rates. Operational variables were membrane size and module fibre density, aeration inside or outside the fibre network, suspension concentration and physico-chemical conditioning. When using hollow fibres including a possible air injection inside the fibre network, results

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8

Hermansen, Tyge Dahl, Søren Ventegodt, and Isack Kandel. "Human Development XI: The Structure of the Cerebral Cortex. Are There Really Modules in the Brain?" Scientific World JOURNAL 7 (2007): 1922–29. http://dx.doi.org/10.1100/tsw.2007.256.

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The structure of human consciousness is thought to be closely connected to the structure of cerebral cortex. One of the most appreciated concepts in this regard is the Szanthagothei model of a modular building of neo-cortex. The modules are believed to organize brain activity pretty much like a computer. We looked at examples in the literature and argue that there is no significant evidence that supports Szanthagothei's model. We discuss the use of the limited genetic information, the corticocortical afferents termination and the columns in primary sensory cortex as arguments for the existence

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9

Guigui, C., M. Mougenot, and C. Cabassud. "Air sparging backwash in ultrafiltration hollow fibres for drinking water production." Water Supply 3, no. 5-6 (2003): 415–22. http://dx.doi.org/10.2166/ws.2003.0197.

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Air sparging was applied to improve backwash efficiency for an ultrafiltration inside/out hollow-fibre module operating in dead-end mode. Air was injected into the retentate side only during the backwash period. The filtration experiments were performed on a semi-industrial scale pilot using a clay suspension as a model of surface waters. The backwash procedure consisted of two steps: in a first step (phase A), air was added to the feed water inside the fibre lumen at the bottom of the module. In a second step (phase B), cleaned water backwash was performed. Different air velocities were used

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10

Gogić, Ilja. "On derivations and elementary operators on C*-algebras." Proceedings of the Edinburgh Mathematical Society 56, no. 2 (2013): 515–34. http://dx.doi.org/10.1017/s0013091512000302.

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AbstractLet A be a unital C*-algebra with the canonical (H) C*-bundle $\mathfrak{A}$ over the maximal ideal space of the centre of A, and let E(A) be the set of all elementary operators on A. We consider derivations on A which lie in the completely bounded norm closure of E(A), and show that such derivations are necessarily inner in the case when each fibre of $\mathfrak{A}$ is a prime C*-algebra. We also consider separable C*-algebras A for which $\mathfrak{A}$ is an (F) bundle. For these C*-algebras we show that the following conditions are equivalent: E(A) is closed in the operator norm; A

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11

HRIVNIAK, LUKAS, JOZEF SVETLIK, MICHAL SASALA, and STEFAN ONDOCKO. "OPTIMIZATION OF THE UNIVERSAL ROTARY MODULE URM THROUGH ADDITIVE MANUFACTURING OF COMPOSITE MATERIALS." MM Science Journal 2021, no. 4 (2021): 4901–5. http://dx.doi.org/10.17973/mmsj.2021_10_2021046.

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The article deals with the ongoing development of the universal rotary module URM 02. The high weight of the components from which the modules are assembled proved to be a significant problem. As well as the weight of the connecting parts that are needed to assemble the manipulator or robotic arm. Design changes have resulted in a reduction in weight compared to older generations of modules, but in order for the manipulator to function properly, further weight reduction is required. The article describes the procedure for lightening components by changing the material and the design changes th

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12

HRIVNIAK, LUKAS, JOZEF SVETLIK, MICHAL SASALA, and STEFAN ONDOCKO. "OPTIMIZATION OF THE UNIVERSAL ROTARY MODULE URM THROUGH ADDITIVE MANUFACTURING OF COMPOSITE MATERIALS." MM Science Journal 2021, no. 4 (2021): 4901–5. http://dx.doi.org/10.17973/mmsj.2021_10_2021046.

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The article deals with the ongoing development of the universal rotary module URM 02. The high weight of the components from which the modules are assembled proved to be a significant problem. As well as the weight of the connecting parts that are needed to assemble the manipulator or robotic arm. Design changes have resulted in a reduction in weight compared to older generations of modules, but in order for the manipulator to function properly, further weight reduction is required. The article describes the procedure for lightening components by changing the material and the design changes th

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13

Osong, Sinke H., Sven Norgren, Per Engstrand, Mathias Lundberg, and Peter Hansen. "Crill: A novel technique to characterize nano-ligno-cellulose." Nordic Pulp & Paper Research Journal 29, no. 2 (2014): 190–94. http://dx.doi.org/10.3183/npprj-2014-29-02-p190-194.

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Abstract The CrillEye is a technique for qualitatively assessing loose slender and fibrillar particles created during pulping. It has also been demonstrated that the crill measurement technique can easily be used to measure the degree of fibrillation of mechanical pulp based nano-ligno-cellulose (NLC). The measurement technique is based on an optical response of a suspension at two wavelengths of light; UV and IR. The UV light contains information on both fibres and crill, while IR only contains information on fibres. The resolution on the CrillEye module is based on optical response of the pu

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14

Brodmann, Markus P., and Rodney Y. Sharp. "On the dimension and multiplicity of local cohomology modules." Nagoya Mathematical Journal 167 (2002): 217–33. http://dx.doi.org/10.1017/s0027763000025484.

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AbstractThis paper is concerned with a finitely generated module M over a (commutative Noetherian) local ring R. In the case when R is a homomorphic image of a Gorenstein local ring, one can use the well-known associativity formula for multiplicities, together with local duality and Matlis duality, to produce analogous associativity formulae for the local cohomology modules of M with respect to the maximal ideal. The main purpose of this paper is to show that these formulae also hold in the case when R is universally catenary and such that all its formal fibres are Cohen–Macaulay.These formula

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15

Woillez, J., J. A. Abad, R. Abuter, et al. "NAOMI: the adaptive optics system of the Auxiliary Telescopes of the VLTI." Astronomy & Astrophysics 629 (September 2019): A41. http://dx.doi.org/10.1051/0004-6361/201935890.

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Context. The tip-tilt stabilisation system of the 1.8 m Auxiliary Telescopes of the Very Large Telescope Interferometer was never dimensioned for robust fringe tracking, except when atmospheric seeing conditions are excellent. Aims. Increasing the level of wavefront correction at the telescopes is expected to improve the coupling into the single-mode fibres of the instruments, and enable robust fringe tracking even in degraded conditions. Methods. We deployed a new adaptive optics module for interferometry (NAOMI) on the Auxiliary Telescopes. Results. We present its design, performance, and ef

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16

Stroppel, Catharina. "Parabolic category O, perverse sheaves on Grassmannians, Springer fibres and Khovanov homology." Compositio Mathematica 145, no. 4 (2009): 954–92. http://dx.doi.org/10.1112/s0010437x09004035.

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AbstractFor a fixed parabolic subalgebra 𝔭 of $\mathfrak {gl}(n,\mathbb {C})$ we prove that the centre of the principal block 𝒪0𝔭 of the parabolic category 𝒪 is naturally isomorphic to the cohomology ring H*(ℬ𝔭) of the corresponding Springer fibre. We give a diagrammatic description of 𝒪0𝔭 for maximal parabolic 𝔭 and give an explicit isomorphism to Braden’s description of the category PervB(G(k,n)) of Schubert-constructible perverse sheaves on Grassmannians. As a consequence Khovanov’s algebra ℋn is realised as the endomorphism ring of some object from PervB(G(n,n)) which corresponds under loc

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17

Jackson, Paige V., Sean M. Rogers, and Leland J. Jackson. "Partitioning of removal of microplastics and other anthropogenic particles among influent, biosolids and final effluent in a tertiary wastewater treatment plant." Aquatic Ecosystem Health & Management 27, no. 3 (2024): 18–28. https://doi.org/10.14321/aehm.027.03.18.

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Abstract Influent, final effluent, biosolids, ultrafiltration membrane module inflow and outflow samples were collected in a tertiary wastewater treatment plant to enumerate and categorize anthropogenic particles, including microplastics in the 250 µm - 5 mm size fraction. Samples were digested with 50% hydrogen peroxide, filtered, and examined via microscopy at 40-50x magnification. Most (99%) anthropogenic particles were present in biosolids compared to final effluent (&lt;1%), with fibres numerically dominating influent and final effluent, and fragments dominating biosolids and ultrafil

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18

Atlaskin, A. A., S. S. Kryuchkov, A. N. Stepakova, et al. "Influence of the Approach to Membrane Mass Transfer Characteristics Determination on the Process Simulation Results." Мембраны и мембранные технологии 13, no. 6 (2023): 464–74. http://dx.doi.org/10.31857/s2218117223060032.

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In this work, the dependence of the output characteristics determined in the simulation of the gas separation membrane process on the gas transport characteristics of the membrane specified as parameters of the membrane module model has been investigated. The study was carried out on a laboratory setup containing polyphenylene oxide hollow fibres. As a result of this integrated study, including theoretical and experimental approaches, it has been determined that when using the ideal gas transport characteristics obtained for pure gases to simulate the process, the error expressed in achievable

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19

Pollet, S., C. Guigui, and C. Cabassud. "Fouling and its reversibility in relation to flow properties and module design in aerated hollow fibre modules for membrane bioreactors." Water Science and Technology 57, no. 4 (2008): 629–36. http://dx.doi.org/10.2166/wst.2008.113.

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Nowadays, most membrane bioreactors are using membranes submerged in the biomass and aeration in the concentrate compartment to limit or to control fouling. An important issue for the design of modules or membrane bundles in MBRs is to understand how the air/liquid flow is behaving and influencing fouling and its reversibility in relationship to the module properties. This paper focuses on an innovative and very specific process, in which HF membranes are put in a cartridge outside the activated sludge tank and a recycling loop is associated to the cartridge in order to decrease concentration

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Knöll, B., and H. Beck. "The cytoskeleton and nucleus: the role of actin as a modulator of neuronal gene expression." e-Neuroforum 17, no. 1 (2011): 1–5. http://dx.doi.org/10.1007/s13295-010-0013-y.

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AbstractActin, arranged for example in stress fibres, provides a fundamental cytoskeletal framework function to all cell types. Notably, there is now mounting evidence that, in addition to cytoplasmic cytoskeletal regulation, actin treadmilling provides a signal modulating nuclear gene expression. In altering gene regulation, cytoplasmic and most likely also a nucleus-resident actin provides an additional (gene) regulatory twist to cell motility. So far, the transcription factor serum response factor (SRF) alongside its myocardin-related transcription factor (MRTF) cofactors has emerged a

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21

Lim, Keng, Hui An, Peng Wang, Guiqin Liu, and Simon Yu. "Theoretical and Computational Analysis on Double-End Submerged Hollow Fibre Membrane Modules." Energies 11, no. 5 (2018): 1042. http://dx.doi.org/10.3390/en11051042.

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This paper studies the potential increase in permeate output flow rate that submerged hollow fibres can achieve when operating in double-end suction. The flow dynamics of submerged hollow fibre membranes with different combinations of fibre inner diameter, membrane thickness, and membrane permeability were numerically simulated. Fibre features (fibre inner diameter, membrane thickness, and membrane permeability) are then characterised for their effects on the increment in permeate flow rate due to change in configuration. Concurrently, an analytical model of a fibre in double-end suction is mo

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Daniel, Geoffrey, Lada Filonova, Åsa M. Kallas, and Tuula T. Teeri. "Morphological and chemical characterisation of the G-layer in tension wood fibres of Populus tremula and Betula verrucosa: Labelling with cellulose-binding module CBM1 Hj Cel7A and fluorescence and FE-SEM microscopy." Holzforschung 60, no. 6 (2006): 618–24. http://dx.doi.org/10.1515/hf.2006.104.

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Abstract The gelatinous layer (G-layer) formed on the lumen wall in early- and latewood fibres of poplar and birch tension wood was characterised using a novel molecular marker specific for crystalline cellulose in conjunction with fluorescence and FE-SEM microscopy. Crystalline cellulose was localised using a cloned Cel7A cellulose-binding module (CBM1 Hj Cel7A) from the fungus Hypocrea jecorina conjugated directly to FITC/TRITC or indirectly via a secondary antibody conjugated to FITC for fluorescence microscopy or to gold/silver for FE-SEM. With the CBM1 Hj Cel7A conjugate, the G-layer was

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Alguacil, Francisco Jose, and Jose Ignacio Robla. "Treatment of Stainless Steel Rinse Waters Using Non-Dispersive Extraction and Strip Dispersion Membrane Technology." Membranes 13, no. 12 (2023): 902. http://dx.doi.org/10.3390/membranes13120902.

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The extraction of Fe(III), Cr(III), and Ni(II) from stainless steel rinse water using non-dispersive extraction and strip dispersion membrane technology was carried out in a microporous hydrophobic hollow-fibre module contactor. The fibres were of polypropylene, whereas the organic extractant DP8R (bis(2-ethylhexyl) phosphoric acid) diluted in ExxsolD100 was used as the carrier phase. The rinse water containing the three elements was passed through the tube side, and the pseudo-emulsion formed by the organic phase of DP8R in Exxol D100 and an acidic strip solution were passed through the shell

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Ihamouchen, Chadia, Hocine Djidjelli, Amar Boukerrou, Françoise Fenouillot, and Clair Barres. "Comportement mécanique et propriétés thermique des composites polyéthyènes renforcés par des fibres lignocellolusiques." Matériaux & Techniques 106, no. 6 (2018): 601. http://dx.doi.org/10.1051/mattech/2018064.

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Un intéret particulier a été porté au grignons dʼolive, qui est un sous produit des rejets des différentes huileries. Chaque année, des milliers de tonnes de ce produit sont incinérés ou carrément rejetés dans la nature. Ce dernier, dont les caractéristiques restent à valoriser, est mis à profit par son incorporation comme charge dans lʼélaboration des matériaux composites à matrice polyéthylène haute densité (PEHD). Pour réduire le caractère hydrophile de la farine, un agent compatibilisant (polyéthylène greffé anhydride maléique) commercialisé sous le nom XA255 a été utilisé. Les échantillon

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Rossignol, J. M., R. Séguéla, and F. Rietsch. "Models mecanique pour les fibres de polyethylene lineaire basse densite d'apres la variation du module d'elasticite avec l'etirage." Makromolekulare Chemie. Macromolecular Symposia 9, no. 1 (1987): 27–38. http://dx.doi.org/10.1002/masy.19870090106.

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Lekha, Prabashni, Tamara Bush, Norman Pammenter, Bruce Sitholè, and Patricia Berjak. "Quantitative assessment of xylan distribution across the secondary cell wall layers of Eucalyptus dissolving pulp fibres." Holzforschung 72, no. 1 (2017): 1–8. http://dx.doi.org/10.1515/hf-2017-0070.

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AbstractA quantitative method has been developed for assessment of the distribution of xylan across the secondary cell wall layers ofEucalyptusdissolving pulp fibres by means of a carbohydrate binding module (CBM),CtCBM6, in combination with transmission electron microscopy (TEM). To ensure reproducibility and to minimise non-specific labelling, various parameters were optimised, namely the size of the gold colloid marker,CtCBM6 concentration, and the selection of buffer solutions. The method was replicated on processedEucalyptusfibres containing different xylan contents. Reproducible xylan co

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Brehant, Anne, Karl Glucina, Isabelle Lemoigne, and Jean-Michel Laine. "Risk management approach for monitoring UF membrane integrity and experimental validation using MS2-phages." Water Supply 8, no. 2 (2008): 239–44. http://dx.doi.org/10.2166/ws.2008.051.

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Low-pressure membrane filtration systems, such as microfiltration (MF) and ultrafiltration (UF), have received a great deal of attention in the past 15 years due to their ability to remove microbial pathogens, especially Cryptosporidium and Giardia. The major concern for the application of membrane technology is, however, how to ensure integrity of these barriers, since small defects in membranes could result in a significant reduction in pathogen removal efficiency. In order to ensure safe drinking water treatment, a number of environmental agencies request the membrane operators to conduct r

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Abdelmalik, Abdelghaffar Amoka, and Knut Brede Liland. "Electric field enhancement control in active junction of IGBT power module." Journal of Physical Science 31, no. 3 (2020): 1–15. http://dx.doi.org/10.21315/jps2020.31.3.1.

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Dielectric liquids are incompressible, able to fill voids and have selfhealing effect and hence are being considered as alternative encapsulation materials to establish power electronics at ambient high pressure at subsea conditions. In a long-term endurance test, insulated-gate bipolar transistor (IGBT) chips subjected to 6.5 kV DC stress in dielectric oil environment was reported to have failed after less than one week in operation. A critical look at the failed objects revealed contamination fibres at the surface and around the high field regions. This paper presents the numerical simulatio

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Wang, Y., K. W. Ong, M. W. D. Brannock, and G. L. Leslie. "Evaluation of membrane bioreactor performance via residence time distribution: effects of membrane configuration and mixing." Water Science and Technology 57, no. 3 (2008): 353–59. http://dx.doi.org/10.2166/wst.2008.114.

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Unlike conventional wastewater treatment systems that have a single effluent discharge point, membrane bioreactors (MBR) may have multiple extraction points resulting from the location of the membrane element in the reactor. This leads to multiple residence time distributions for an MBR system. One method to characterise the mixing is based on the concept of residence time distribution (RTD). A set of RTDs were generated using the conservative tracer, lithium chloride, for pilot plant MBRs with capacity up to 300 m3/day. Flat sheet and hollow fibre pilot plant MBR systems were operated in para

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Lecerf, J. M., A. Cayzeele, F. Depeint, et al. "O29 Une nouvelle combinaison de fibres à effet prébiotique module les cytokines de l’inflammation et diminue le lipopolysaccharide circulant." Diabetes & Metabolism 36 (March 2010): A8. http://dx.doi.org/10.1016/s1262-3636(10)70033-1.

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Kroulíková, Tereza, Ilya Astrouski, and Miroslav Raudenský. "CHAOTISED POLYMERIC HOLLOW FIBRE BUNDLE AS A CROSSFLOW HEAT EXCHANGER IN AIR-WATER APPLICATION." Acta Polytechnica 60, no. 4 (2020): 318–23. http://dx.doi.org/10.14311/ap.2020.60.0318.

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Fifteen years ago, polymeric hollow fibre heat exchangers were presented for the first time. Nowadays there are not only the shell-and-tube types as there were at the beginning. In this paper, six chaotised polymeric hollow fibre bundles with a different number of fibres were studied. The bundles presented varied in their fibre diameter, number and shape. These bundles were fixed into the module in such a way that the middle part serves as a cross-flow heat exchanger in an air tunnel. They were tested for air-water application with three different airflow rates. The overall heat transfer coeff

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Albergo, S. F., A. Braghieri, A. Burdyko, et al. "Energy response and resolution to positrons in a capillary-tube dual-readout calorimeter prototype." Journal of Instrumentation 20, no. 07 (2025): P07040. https://doi.org/10.1088/1748-0221/20/07/p07040.

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Abstract We present the results of a test beam campaign on a capillary-tube fibre-based dual-readout calorimeter, designed for precise hadronic and electromagnetic energy measurements in future collider experiments. The calorimeter prototype consists of nine modules, each composed of brass capillary tubes housing scintillating and Cherenkov optical fibres, read out using silicon photomultipliers for the central module and photomultiplier tubes for the outer modules. The performance of the detector was assessed using a positron beam with energies ranging from 10 to 120 GeV at the CERN SPS H8 be

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Kokutse, Adzo Dzifa, Afiwa Dzigbodi Akpenè, Olivier Monteuuis, et al. "SELECTION OF PLUS TREES FOR GENETICALLY IMPROVED TEAK VARIETIES PRODUCED IN BENIN AND TOGO." BOIS & FORETS DES TROPIQUES 328, no. 328 (2017): 55. http://dx.doi.org/10.19182/bft2016.328.a31302.

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Cette étude vise la sélection d’arbres« plus » sur la base des caractères den- drométriques et des propriétés du bois dans des plantations de teck au Bénin et au Togo. La croissance de 569 arbres dans 5 forêts au Togo et 90 arbres dans 3 forêts au Bénin a été évaluée en mesu- rant le diamètre à hauteur de poitrine, la hauteur totale et la hauteur du fût. Les propriétés suivantes du bois ont été éva- luées et prises en compte pour la sélec- tion finale d’arbres « plus » : densité, pourcentage de bois de cœur et couleur. La durabilité naturelle du bois de cœur, le point de saturation des fibres,

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Gentile, Cosimo, Giacomo Lunghi, Luca Rosario Buonocore, et al. "Manipulation Tasks in Hazardous Environments Using a Teleoperated Robot: A Case Study at CERN." Sensors 23, no. 4 (2023): 1979. http://dx.doi.org/10.3390/s23041979.

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Remote robotic systems are employed in the CERN accelerator complex to perform different tasks, such as the safe handling of cables and their connectors. Without dedicated control, these kinds of actions are difficult and require the operators’ intervention, which is subjected to dangerous external agents. In this paper, two novel modules of the CERNTAURO framework are presented to provide a safe and usable solution for managing optical fibres and their connectors. The first module is used to detect touch and slippage, while the second one is used to regulate the grasping force and contrast sl

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Blok, Lourens, Marco Longana, and Benjamin Woods. "Fabrication and Characterisation of Aligned Discontinuous Carbon Fibre Reinforced Thermoplastics as Feedstock Material for Fused Filament Fabrication." Materials 13, no. 20 (2020): 4671. http://dx.doi.org/10.3390/ma13204671.

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In this work, aligned discontinuous fibre composite (ADFRC) tapes were developed and investigated as precursors for a novel 3D printing filament. ADFRCs have the potential to achieve mechanical performance comparable to continuous fibre reinforced composites, given sufficient fibre length and high level of alignment, and avoid many of the manufacturing difficulties associated with continuous fibres, e.g., wrinkling, bridging and corner radii constraints. Their potential use for fused filament fabrication (FFF) techniques was investigated here. An extensive down-selection process of thermoplast

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McDonough, John E., Naftali Kaminski, Bernard Thienpont, James C. Hogg, Bart M. Vanaudenaerde, and Wim A. Wuyts. "Gene correlation network analysis to identify regulatory factors in idiopathic pulmonary fibrosis." Thorax 74, no. 2 (2018): 132–40. http://dx.doi.org/10.1136/thoraxjnl-2018-211929.

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BackgroundIdiopathic pulmonary fibrosis (IPF) is a severe lung disease characterised by extensive pathological changes. The objective for this study was to identify the gene network and regulators underlying disease pathology in IPF and its association with lung function.MethodsLung Tissue Research Consortium dataset with 262 IPF and control subjects (GSE47460) was randomly divided into two non-overlapping groups for cross-validated differential gene expression analysis. Consensus weighted gene coexpression network analysis identified overlapping coexpressed gene modules between both IPF group

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Machado, João, Adriano Araújo, Ricardo Pinto, and Francisco M. Gama. "Studies on the interaction of the carbohydrate binding module 3 from the Clostridium thermocellum CipA scaffolding protein with cellulose and paper fibres." Cellulose 16, no. 5 (2009): 817–24. http://dx.doi.org/10.1007/s10570-009-9294-0.

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Labesse, Gilles, Thomas Alexandre, Laurène Vaupré, et al. "Functional CBS modules make IMPDHs octameric." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1283. http://dx.doi.org/10.1107/s2053273314087166.

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Inosine-5'-monophosphate dehydrogenase (1, 2) (IMPDH) is a major target for antiviral, antiparasitic, antileukemic and immunosuppressive therapies. It is an ubiquitous and essential enzyme for the biosynthesis of guanosine nucleotides. Up to now, IMPDHs have been reported as tetrameric enzymes harbouring a catalytic domain and a tandem of cystathionine-ß-synthase (CBS) modules. The latter had no precise function assigned despite their nearly absolute conservation among IMPDHs and consistent indication of their importance in vivo. The aim of our study was to provide evidence for the role of the

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Kallweit, Jan, Fabian Köntges, and Thomas Gries. "Supply Chain Cost Analysis for Interior Lighting Systems Based on Polymer Optical Fibres Compared to Optical Injection Moulding." Textiles 5, no. 3 (2025): 29. https://doi.org/10.3390/textiles5030029.

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Car interior design should evoke emotions, offer comfort, convey safety and at the same time project the brand identity of the car manufacturer. Lighting is used to address these functions. Modules required for automotive interior lighting often feature injection-moulded (IM) light guides, whereas woven fabrics with polymer optical fibres (POFs) offer certain technological advantages and show first-series applications in cars. In the future, car interior illumination will become even more important in the wake of megatrends such as autonomous driving. Since the increase in deployment of these

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Walczak, Agata, Ireneusz Naworol, Daniel Pieniak, Kamil Pasierbiewicz, and Grzegorz Dzień. "Experimental studies on changes in mechanical properties of polymer composites under impact of thermal load determined based on compression testing." MATEC Web of Conferences 247 (2018): 00027. http://dx.doi.org/10.1051/matecconf/201824700027.

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The objective of the study was to carry out an analysis of changes in mechanical properties of polymer composites in conditions of thermal load. Such an analysis may allow an initial verification of possibilities of deploying new composites in production of fire helmet shells. The reference material chosen for testing was the Ultramid composite, which is currently used for the production of fire helmet shells. In addition three different materials were selected that contained reinforcement by glass fibres bearing the trade name of Tarnamid, which are not used in manufacturing of shells. Testin

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Kierzkowski, Artur, Tomasz Kisiel, Maciej Milewski, Ádám Török, Michał Stosiak, and Jakub Wróbel. "Computer-aided simulation of unmanned aerial vehicle composite structure dynamics." Transport 39, no. 4 (2024): 302–12. https://doi.org/10.3846/transport.2024.23159.

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The dynamic response of an aerial vehicle structure is a key parameter that must be determined before further aeroelastic phenomena can be analysed in the aerospace sector. Natural frequencies, mode shapes, and damping can be measured or predicted through experimental, operational, or computational studies. To reduce the costs and complexity of experimental investigations, there is a demand for numerical models that accurately represent the structure′s dynamic behaviour. This article focuses on modelling composite structures, which are increasingly utilised in the aerospace industry and whose

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Aiello, S., A. Albert, S. Alves Garre, et al. "KM3NeT broadcast optical data transport system." Journal of Instrumentation 18, no. 02 (2023): T02001. http://dx.doi.org/10.1088/1748-0221/18/02/t02001.

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Abstract The optical data transport system of the KM3NeT neutrino telescope at the bottom of the Mediterranean Sea will provide more than 6000 optical modules in the detector arrays with a point-to-point optical connection to the control stations onshore. The ARCA and ORCA detectors of KM3NeT are being installed at a depth of about 3500 m and 2500 m, respectively and their distance to the control stations is about 100 kilometers and 40 kilometers. In particular, the two detectors are optimised for the detection of cosmic neutrinos with energies above about 1 TeV (ARCA) and for the detection of

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DOUGABKA, Dao, Jean GÉRARD, Tikri BIANZEUBE, et al. "Variations des caractéristiques physiques et mécaniques du bois de Balanites aegyptiaca en fonction de trois provenances." BOIS & FORETS DES TROPIQUES 349 (September 15, 2021): 7–21. http://dx.doi.org/10.19182/bft2021.349.a36776.

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Balanites aegyptiaca est une espèce caractéristique et emblématique des zones sèches d’Afrique et d’Asie. Elle revêt une grande importance socio-économique dans toute sa zone naturelle de répartition du fait de ses multiples usages. Toutefois, les propriétés technologiques de son bois sont mal connues, d’où des utilisations parfois inappropriées mais qui pourraient être élargies. Afin de mieux adapter ses applications à ses caractéristiques, nous avons déterminé les indicateurs de stabilité physique (masse volumique, infradensité, retrait radial total, retrait tangentiel total, retrait volumiq

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Seghman, Petr, Lukáš Krátký, and Tomáš Jirout. "Effect of membrane separation process conditions on the recovery of syngas components." Acta Polytechnica 62, no. 3 (2022): 394–99. http://dx.doi.org/10.14311/ap.2022.62.0394.

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The presented study focuses on inspecting the dependency between process conditions, especially permeate and retentate pressure and component recovery of H2, CO, and CO2 during a membrane separation of model syngas. Experiments with both pure components and a model mixture were performed using a laboratory membrane unit Ralex GSU-LAB-200 with a polyimide hollow fibre module with 3000 hollow fibres. Permeability values were established at 1380 Barrer for H2, 23 Barrer for CO, and 343 Barrer for CO2. The measured selectivities differ from the ideal ones: the ideal H2/CO2 selectivity is 3.21, whi

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Mikolajczak, Janine, Hanna Zimmermann, Ahmad Kheirkhah, et al. "Patients with multiple sclerosis demonstrate reduced subbasal corneal nerve fibre density." Multiple Sclerosis Journal 23, no. 14 (2016): 1847–53. http://dx.doi.org/10.1177/1352458516677590.

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Background: Many studies in multiple sclerosis (MS) have investigated the retina. Little, however, is known about the effect of MS on the cornea, which is innervated by the trigeminal nerve. It is the site of neural-immune interaction with local dendritic cells reacting in response to environmental stimuli. Objective: This study aims to investigate the effect of MS on corneal nerve fibres and dendritic cells in the subbasal nerve plexus using in vivo confocal microscopy (IVCM). Methods: We measured the corneal nerve fibre and dendritic cell density in 26 MS patients and matched healthy control

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Waite, J. H., E. Vaccaro, C. Sun, and J. M. Lucas. "Elastomeric gradients: a hedge against stress concentration in marine holdfasts?" Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 357, no. 1418 (2002): 143–53. http://dx.doi.org/10.1098/rstb.2001.1025.

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The byssal threads of marine mussels are elastomeric fibres with a great capacity for absorbing and dissipating energy. Up to 70% of the total absorbed energy can be dissipated in the byssus. Because byssal threads attach the mussel to hard inert surfaces in its habitat, they must combine the need to be good shock absorbers with appropriate matching of Young's modulus between living tissue and a hard sub–stratum such as stone—stiffnesses that can differ by five orders of magnitude. Recent data suggest that improved modulus matching and decreased stress concentration between different portions

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Zeitlinger, J., and D. Bohmann. "Thorax closure in Drosophila: involvement of Fos and the JNK pathway." Development 126, no. 17 (1999): 3947–56. http://dx.doi.org/10.1242/dev.126.17.3947.

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Dorsal closure, a morphogenetic movement during Drosophila embryogenesis, is controlled by the Drosophila JNK pathway, D-Fos and the phosphatase Puckered (Puc). To identify principles of epithelial closure processes, we studied another cell sheet movement that we term thorax closure, the joining of the parts of the wing imaginal discs which give rise to the adult thorax during metamorphosis. In thorax closure a special row of margin cells express puc and accumulate prominent actin fibres during midline attachment. Genetic data indicate a requirement of D-Fos and the JNK pathway for thorax clos

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Gabarrón, S., M. Gómez, H. Monclús, I. Rodríguez-Roda, and J. Comas. "Ragging phenomenon characterisation and impact in a full-scale MBR." Water Science and Technology 67, no. 4 (2013): 810–16. http://dx.doi.org/10.2166/wst.2012.633.

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Although there are few studies about clogging phenomenon in the peer-reviewed literature, it is considered one of the main operational challenges by membrane bioreactor (MBR) practitioners. This study presents data from the performance of a full-scale MBR affected by clogging, and ragging in particular. An evaluation of the efficiencies of different applied cleaning methods revealed the acid recovery cleaning to be more efficient than the basic recovery cleanings, although all maintenance cleanings were largely ineffective in recovering membrane permeability. Only declogging cleaning through t

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Willers, H., P. de Gijsel, N. Ogink, et al. "Monitoring of biological odour filtration in closed environments with olfactometry and an electronic nose." Water Science and Technology 50, no. 4 (2004): 93–100. http://dx.doi.org/10.2166/wst.2004.0230.

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Air treatment with a compact biological membrane filter, and air quality monitoring with an electronic nose were tested in the laboratory on air from a cage containing six mice. Additional analyses of air to and from the filter were performed using olfactometry and ammonia and hydrogen sulphide gas detection tubes. The biological air filter is a module containing biofilm-coated membrane fibres that separate a closed liquid loop from a gas phase. Odour compounds and oxygen diffuse through the membranes from the gas phase to the biofilm, where they are degraded to carbon dioxide and water. The p

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Inferrera, Leandro, Emanuela Aragona, Adam Wylęgała, et al. "The Role of Hi-Tech Devices in Assessment of Corneal Healing in Patients with Neurotrophic Keratopathy." Journal of Clinical Medicine 11, no. 6 (2022): 1602. http://dx.doi.org/10.3390/jcm11061602.

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To prove the role of high-tech investigation in monitoring corneal morphological changes in patients with neurotrophic keratopathy (NK) using Keratograph 5M (K5M) and anterior segment OCT (AS-OCT), corneal healing was monitored with Keratograph 5M (Oculus, Wetzlar, Germany) and AS-OCT (DRI, Triton, Topcon, Tokyo, Japan) in 13 patients (8F and 5M), aged from 24 to 93 years (67.8 ± 19) with severe NK, who were treated with Cenegermin 0.002% (20 μg/mL) (Oxervate®, Dompè, Farmaceutici Spa, Milan, Italy). The surface defects were evaluated on Keratograph 5M with ImageJ software and the corneal thic

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