Bibliografías temáticas / Hydrophobic

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Literatura académica sobre el tema "Hydrophobic"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 9 de junio de 2025

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Artículos de revistas sobre el tema "Hydrophobic"

1

Vaishnavi, Kulwal, I. Mohamed Zara, P. Bhangui Varad, Jumnani Prohit, and Shraddha Kulkarni Dr. "Utilization of Fungal Proteins in Increasing Bioavailability and Stability of Hydrophobic Drugs." International Journal of Innovative Science and Research Technology 8, no. 5 (May 19, 2023): 602–11. https://doi.org/10.5281/zenodo.7950921.

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Hydrophobins are a group of small, low molecular weight cysteine-rich fungal proteins found in the hyphae walls of fungi. Due to their composition, hydrophobins have the surface-modifying ability to form an amphiphilic membrane at the hydrophobichydrophilic interface in an aqueous solution which can be used to coat hydrophobic surfaces and change their nature. This property has applications in increasing the bioavailability of low aqueous solubility hydrophobic compounds by preparation of nanosuspensions. The low solubility hinders their efficacy in being used as therapeutic drugs. The objective of this review is to explore the medical application of hydrophobins in the preparation of hydrophobin-drug nanosuspension in order to increase the bioavailability of hydrophobic drugs and to explore the stability of these nanosuspensions using five hydrophobic therapeutics - curcumin, nifedipine, cyclosporine, docetaxel, and amphotericin.
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2

Scholtmeijer, Karin, Meike I. Janssen, Bertus Gerssen, Marcel L. de Vocht, Babs M. van Leeuwen, Theo G. van Kooten, Han A. B. Wösten, and Joseph G. H. Wessels. "Surface Modifications Created by Using Engineered Hydrophobins." Applied and Environmental Microbiology 68, no. 3 (March 2002): 1367–73. http://dx.doi.org/10.1128/aem.68.3.1367-1373.2002.

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ABSTRACT Hydrophobins are small (ca. 100 amino acids) secreted fungal proteins that are characterized by the presence of eight conserved cysteine residues and by a typical hydropathy pattern. Class I hydrophobins self-assemble at hydrophilic-hydrophobic interfaces into highly insoluble amphipathic membranes, thereby changing the nature of surfaces. Hydrophobic surfaces become hydrophilic, while hydrophilic surfaces become hydrophobic. To see whether surface properties of assembled hydrophobins can be changed, 25 N-terminal residues of the mature SC3 hydrophobin were deleted (TrSC3). In addition, the cell-binding domain of fibronectin (RGD) was fused to the N terminus of mature SC3 (RGD-SC3) and TrSC3 (RGD-TrSC3). Self-assembly and surface activity were not affected by these modifications. However, physiochemical properties at the hydrophilic side of the assembled hydrophobin did change. This was demonstrated by a change in wettability and by enhanced growth of fibroblasts on Teflon-coated with RGD-SC3, TrSC3, or RGD-TrSC3 compared to bare Teflon or Teflon coated with SC3. Thus, engineered hydrophobins can be used to functionalize surfaces.
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Scholtmeijer, K., M. I. Janssen, M. B. M. van Leeuwen, T. G. van Kooten, H. Hektor, and H. A. B. Wösten. "The use of hydrophobins to functionalize surfaces." Bio-Medical Materials and Engineering 14, no. 4 (November 2004): 447–54. https://doi.org/10.1177/095929892004014004011.

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The physiochemical nature of surfaces can be changed by small proteins which are secreted by filamentous fungi. These proteins, called hydrophobins, are characterized by the presence of eight conserved cysteine residues and a typical hydropathy pattern. Upon contact with a hydrophilic–hydrophobic interface they self‐assemble into highly insoluble amphipathic membranes. As a result, hydrophobic surfaces become hydrophilic and vice versa. Genetic engineering of hydrophobins was used to study structure–function relationships. In addition, engineered hydrophobins were constructed to increase the biocompatibility of surfaces. The glycosylated N‐terminal region of the mature SC3 hydrophobin was deleted and the cell‐binding domain of human fibronectin was introduced at the N‐terminus. The gross properties of the hydrophobins were not affected. However, the physiochemical properties of the hydrophilic side of the assembled protein did change. Growth of fibroblasts on Teflon could be improved by coating the solid with the engineered hydrophobins. Thus, by changing the N‐terminal part of hydrophobins, the physiochemical nature of the hydrophilic side of the assembled form can be altered and a variety of new functionalities introduced. The fact that hydrophobins self‐assemble at any hydrophilic–hydrophobic interface, irrespective of the chemical nature of the surface, therefore provides a generic approach to modify surfaces and make them interesting candidates for the use in various technical and medical applications.
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Pennacchio, Anna, Paola Cicatiello, Eugenio Notomista, Paola Giardina, and Alessandra Piscitelli. "New clues into the self-assembly of Vmh2, a basidiomycota class I hydrophobin." Biological Chemistry 399, no. 8 (July 26, 2018): 895–901. http://dx.doi.org/10.1515/hsz-2018-0124.

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Abstract Hydrophobins are fungal proteins that can self-assemble into amphiphilic films at hydrophobic-hydrophilic interfaces. Class I hydrophobin aggregates resemble amyloid fibrils, sharing some features with them. Here, five site-directed mutants of Vmh2, a member of basidiomycota class I hydrophobins, were designed and characterized to elucidate the molecular determinants playing a key role in class I hydrophobin self-assembly. The mechanism of fibril formation proposed for Vmh2 foresees that the triggering event is the destabilization of a specific loop (L1), leading to the formation of a β-hairpin, which in turn generates the β-spine of the amyloid fibril.
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Teertstra, Wieke R., Heine J. Deelstra, Miroslav Vranes, Ralph Bohlmann, Regine Kahmann, Jörg Kämper, and Han A. B. Wösten. "Repellents have functionally replaced hydrophobins in mediating attachment to a hydrophobic surface and in formation of hydrophobic aerial hyphae in Ustilago maydis." Microbiology 152, no. 12 (December 1, 2006): 3607–12. http://dx.doi.org/10.1099/mic.0.29034-0.

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Ustilago maydis contains one repellent and two class I hydrophobin genes in its genome. The repellent gene rep1 has been described previously. It encodes 11 secreted repellent peptides that result from the cleavage of a precursor protein at KEX2 recognition sites. The hydrophobin gene hum2 encodes a typical class I hydrophobin of 117 aa, while hum3 encodes a hydrophobin that is preceded by 17 repeat sequences. These repeats are separated, like the repellent peptides, by KEX2 recognition sites. Gene hum2, but not hum3, was shown to be expressed in a cross of two compatible wild-type strains, suggesting a role of the former hydrophobin gene in aerial hyphae formation. Indeed, aerial hyphae formation was reduced in a Δhum2 cross. However, the reduction in aerial hyphae formation was much more dramatic in the Δrep1 cross. Moreover, colonies of the Δrep1 cross were completely wettable, while surface hydrophobicity was unaffected and only slightly reduced in the Δhum2 and the Δhum2Δhum3 cross, respectively. It was also shown that the repellents and not the hydrophobins are involved in attachment of hyphae to hydrophobic Teflon. Deleting either or both hydrophobin genes in the Δrep1 strains did not further affect aerial hyphae formation, surface hydrophobicity and attachment. From these data it is concluded that hydrophobins of U. maydis have been functionally replaced, at least partially, by repellents.
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Ahn, Sang-Oh, Ho-Dong Lim, Sung-Hwan You, Dae-Eun Cheong, and Geun-Joong Kim. "Soluble Expression and Efficient Purification of Recombinant Class I Hydrophobin DewA." International Journal of Molecular Sciences 22, no. 15 (July 22, 2021): 7843. http://dx.doi.org/10.3390/ijms22157843.

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Hydrophobins are small proteins (<20 kDa) with an amphipathic tertiary structure that are secreted by various filamentous fungi. Their amphipathic properties provide surfactant-like activity, leading to the formation of robust amphipathic layers at hydrophilic–hydrophobic interfaces, which make them useful for a wide variety of industrial fields spanning protein immobilization to surface functionalization. However, the industrial use of recombinant hydrophobins has been hampered due to low yield from inclusion bodies owing to the complicated process, including an auxiliary refolding step. Herein, we report the soluble expression of a recombinant class I hydrophobin DewA originating from Aspergillus nidulans, and its efficient purification from recombinant Escherichia coli. Soluble expression of the recombinant hydrophobin DewA was achieved by a tagging strategy using a systematically designed expression tag (ramp tag) that was fused to the N-terminus of DewA lacking the innate signal sequence. Highly expressed recombinant hydrophobin DewA in a soluble form was efficiently purified by a modified aqueous two-phase separation technique using isopropyl alcohol. Our approach for expression and purification of the recombinant hydrophobin DewA in E. coli shed light on the industrial production of hydrophobins from prokaryotic hosts.
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Carro, Shirley, Valeria J. Gonzalez-Coronel, Jorge Castillo-Tejas, Hortensia Maldonado-Textle, and Nancy Tepale. "Rheological Properties in Aqueous Solution for Hydrophobically Modified Polyacrylamides Prepared in Inverse Emulsion Polymerization." International Journal of Polymer Science 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/8236870.

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Inverse emulsion polymerization technique was employed to synthesize hydrophobically modified polyacrylamide polymers with hydrophobe contents near to feed composition. Three different structures were obtained: multisticker, telechelic, and combined. N-Dimethyl-acrylamide (DMAM), n-dodecylacrylamide (DAM), and n-hexadecylacrylamide (HDAM) were used as hydrophobic comonomers. The effect of the hydrophobe length of comonomer, the initial monomer, and surfactant concentrations on shear viscosity was studied. Results show that the molecular weight of copolymer increases with initial monomer concentration and by increasing emulsifier concentration it remained almost constant. Shear viscosity measurements results show that the length of the hydrophobic comonomer augments the hydrophobic interactions causing an increase in viscosity and that the polymer thickening ability is higher for combined polymers.
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Serva, Alessandra, Mathieu Salanne, Martina Havenith, and Simone Pezzotti. "Size dependence of hydrophobic hydration at electrified gold/water interfaces." Proceedings of the National Academy of Sciences 118, no. 15 (April 5, 2021): e2023867118. http://dx.doi.org/10.1073/pnas.2023867118.

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Hydrophobic hydration at metal/water interfaces actively contributes to the energetics of electrochemical reactions, e.g. CO2 and N2 reduction, where small hydrophobic molecules are involved. In this work, constant applied potential molecular dynamics is employed to study hydrophobic hydration at a gold/water interface. We propose an adaptation of the Lum–Chandler–Weeks (LCW) theory to describe the free energy of hydrophobic hydration at the interface as a function of solute size and applied voltage. Based on this model we are able to predict the free energy cost of cavity formation at the interface directly from the free energy cost in the bulk plus an interface-dependent correction term. The interfacial water network contributes significantly to the free energy, yielding a preference for outer-sphere adsorption at the gold surface for ideal hydrophobes. We predict an accumulation of small hydrophobic solutes of sizes comparable to CO or N2, while the free energy cost to hydrate larger hydrophobes, above 2.5-Å radius, is shown to be greater at the interface than in the bulk. Interestingly, the transition from the volume dominated to the surface dominated regimes predicted by the LCW theory in the bulk is also found to take place for hydrophobes at the Au/water interface but occurs at smaller cavity radii. By applying the adapted LCW theory to a simple model addition reaction, we illustrate some implications of our findings for electrochemical reactions.
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Ohtaki, Shinsaku, Hiroshi Maeda, Toru Takahashi, Youhei Yamagata, Fumihiko Hasegawa, Katsuya Gomi, Tasuku Nakajima, and Keietsu Abe. "Novel Hydrophobic Surface Binding Protein, HsbA, Produced by Aspergillus oryzae." Applied and Environmental Microbiology 72, no. 4 (April 2006): 2407–13. http://dx.doi.org/10.1128/aem.72.4.2407-2413.2006.

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ABSTRACT Hydrophobic surface binding protein A (HsbA) is a secreted protein (14.5 kDa) isolated from the culture broth of Aspergillus oryzae RIB40 grown in a medium containing polybutylene succinate-co-adipate (PBSA) as a sole carbon source. We purified HsbA from the culture broth and determined its N-terminal amino acid sequence. We found a DNA sequence encoding a protein whose N terminus matched that of purified HsbA in the A. ozyzae genomic sequence. We cloned the hsbA genomic DNA and cDNA from A. oryzae and constructed a recombinant A. oryzae strain highly expressing hsbA. Orthologues of HsbA were present in animal pathogenic and entomopathogenic fungi. Heterologously synthesized HsbA was purified and biochemically characterized. Although the HsbA amino acid sequence suggests that HsbA may be hydrophilic, HsbA adsorbed to hydrophobic PBSA surfaces in the presence of NaCl or CaCl2. When HsbA was adsorbed on the hydrophobic PBSA surfaces, it promoted PBSA degradation via the CutL1 polyesterase. CutL1 interacts directly with HsbA attached to the hydrophobic QCM electrode surface. These results suggest that when HsbA is adsorbed onto the PBSA surface, it recruits CutL1, and that when CutL1 is accumulated on the PBSA surface, it stimulates PBSA degradation. We previously reported that when the A. oryzae hydrophobin RolA is bound to PBSA surfaces, it too specifically recruits CutL1. Since HsbA is not a hydrophobin, A. oryzae may use several types of proteins to recruit lytic enzymes to the surface of hydrophobic solid materials and promote their degradation.
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Kazmierczak, Pam, Dae Hyuk Kim, Massimo Turina, and Neal K. Van Alfen. "A Hydrophobin of the Chestnut Blight Fungus, Cryphonectria parasitica, Is Required for Stromal Pustule Eruption." Eukaryotic Cell 4, no. 5 (May 2005): 931–36. http://dx.doi.org/10.1128/ec.4.5.931-936.2005.

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ABSTRACT Hydrophobins are abundant small hydrophobic proteins that are present on the surfaces of many filamentous fungi. The chestnut blight pathogen Cryphonectria parasitica was shown to produce a class II hydrophobin, cryparin. Cryparin is the most abundant protein produced by this fungus when grown in liquid culture. When the fungus is growing on chestnut trees, cryparin is found only in the fungal fruiting body walls. Deletion of the gene encoding cryparin resulted in a culture phenotype typical of hydrophobin deletion mutants of other fungi, i.e., easily wettable (nonhydrophobic) hyphae. When grown on the natural substrate of the fungus, however, cryparin-null mutation strains were unable to normally produce its fungal fruiting bodies. Although the stromal pustules showed normal development initially, they were unable to erupt through the bark of the tree. The hydrophobin cryparin thus plays an essential role in the fitness of this important plant pathogen by facilitating the eruption of the fungal fruiting bodies through the bark of its host tree.
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Tesis sobre el tema "Hydrophobic"

1

Mancera, Ricardo Luis. "Understanding the hydrophobic effect." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627110.

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Pazhianur, Rajesh R. "Hydrophobic Forces in Flotation." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/28066.

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An atomic force microscope (AFM) has been used to conduct force measurements to better understand the role of hydrophobic forces in flotation. The force measurements were conducted between a flat mineral substrate and a hydrophobic glass sphere in aqueous solutions. It is assumed that the hydrophobic glass sphere may simulate the behavior of air bubbles during flotation. The results may provide information relevant to the bubble-particle interactions occurring during flotation. The glass sphere was hydrophobized by octadecyltrichlorosilane so that its water contact angle was 109 degrees. The mineral systems studied include covellite (CuS), sphalerite (ZnS) and hornblende (Ca₂(Mg, Fe)₅(Si₈O₂₂)(OH,F)₂). The collector used for all the mineral systems studied was potassium ethyl xanthate (KEX). For the covellite-xanthate system, a biopotentiostat was used in conjunction with the AFM to control the potential of the mineral surface during force measurements. This was necessary since the adsorption of xanthate is strongly dependent on the electrochemical potential (Eₕ) across the solid/liquid interface. The results show the presence of strong hydrophobic forces not accounted for by the DLVO (named after Derjaguin, Landau, Verwey and Overbeek) theory. Furthermore, the potential at which the strongest hydrophobic force was measured corresponds to the potential where the flotation recovery of covellite reaches a maximum, indicating a close relationship between the two. Direct force measurements were also conducted to study the mechanism of copper-activation of sphalerite. The force measurements conducted with unactivated sphalerite in 10⁻³ M KEX solutions did not show the presence of hydrophobic force while the results obtained with copper-activated sphalerite at pH 9.2 and 4.6 showed strong hydrophobic forces. However, at pH 6.8, no hydrophobic forces were observed, which explains why the flotation of sphalerite is depressed in the neutral pH regime. Direct force measurements were also conducted using hornblende in xanthate solutions to study the mechanism of inadvertent activation and flotation of rock minerals. The results show the presence of long-range hydrophobic forces when hornblende was activated by heavy metal cations such as Cu²⁺ and Ni²⁺ ions. The strong hydrophobic forces were observed at pHs above the precipitation pH of the activating cation. These results were confirmed by the XPS analysis of the activated hornblende samples. Force measurements were conducted between silanated silica surfaces to explore the relationship between hydrophobicity, advancing contact angle (CA), and the magnitude (K) of hydrophobic force. In general, K increases as Contact Angle increases and does so abruptly at Contact Angle=90°. At the same time, the acid-base component of the surface free energy decreases with increasing CA and K. At CA>90°, GammaS<sup>AB</sup> approaches zero. Based on the results obtained in the present work a mathematical model for the origin of the hydrophobic force has been developed. It is based on the premise that hydrophobic force originates from the attraction between large dipoles on two opposing surfaces. The model has been used successfully to fit the measured hydrophobic forces using dipole moment as the only adjustable parameter. However, the hydrophobic forces measured at CA>90° cannot be fitted to the model, indicating that there may be an additional mechanism, possibly cavitation, contributing to the appearance of the long-range hydrophobic force.<br>Ph. D.
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Cochin, D., P. Hendlinger, and André Laschewsky. "Polysoaps with fluorocarbon hydrophobic chains." Universität Potsdam, 1995. http://opus.kobv.de/ubp/volltexte/2008/1734/.

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A series of amphiphilic copolymers is prepared by copolymerization of choline methacrylate with 1,1,2,2-tetrahydroperfluorooctyl methacrylate in varying amounts. The copolymers bearing fluorocarbon chains are studied concerning their effects on viscosity, solubilization and surface activity in aqueous solution, exhibiting a general behavior characteristic for polysoaps. The results are compared with the ones obtained for an analogous series of amphiphilic copolymers bearing hydrocarbon chains.
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Quyum, Abdul. "Water migration through hydrophobic soils." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ65008.pdf.

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Singh, Baljit. "Studies on hydrophobic dendrimer nanoparticles." Thesis, University College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428133.

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Matthews, Andrew Ernest. "Synthesis of hydrophobic crosslinkable resins." Thesis, Kingston University, 1989. http://eprints.kingston.ac.uk/20528/.

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After reviewing the literature relating to the synthesis and properties of hydrophobic materials, and then considering potential methods for their synthesis, a route for the preparation of novel materials was chosen. A reaction scheme involving the condensation of an excess of 1,4-bis (chloromethyl) benzene with bisphenolic compounds, and conversion of the resultant chloromethyl products to their vinyl analogues is described. A variety of methods were used to accomplish the initial etherification. The use of dimethyl acetamide and potassium carbonate was found to reduce the incidence of side reactions. The vinylation stage, using the Wittig reaction was also studied. The products were characterised by NMR and IR spectroscopy and by gel permeation and high perfonnance liquid chromatography. The curing reaction of the vinyl terminated material was studied using differential scanning calorimetry. The reaction product derived from bisphenol A was cured into various specimens, and the physical properties of the material examined. The polymer combines reasonable mechanical properties with one of the lowest water absorption maximov reported in the literature for non-fluorinated thennosets. On immersion in water at 700 C. the absorption maximov was 0.28% by weight. The thermooxidative degradation of the base material was also examined.
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7

Pan, Lei. "Hydrophobic Forces in Wetting Films." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/76918.

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Flotation is an important separation process used in the mining industry. The process is based on hydrophobizing a selected mineral using an appropriate surfactant, so that an air bubble can spontaneously adhere on the mineral surface. The bubble-particle adhesion is possible only when the thin film of water between the bubble and particle ruptures, just like when two colloidal particles or air bubbles adhere with each other. Under most flotation conditions, however, both the double-layer and dispersion forces are repulsive, which makes it difficult to model the rupture of the wetting films using the DLVO theory. In the present work, we have measured the kinetics of film thinning between air bubble and flat surfaces of gold and silica. The former was hydrophobized by ex-site potassium amyl xanthate, while the latter by in-site Octadecyltrimetylammonium chlroride. The kinetics curves obtained with and without theses hydrophobizing agents were fitted to the Reynolds lubrication theory by assuming that the driving force for film thinning was the sum of capillary pressure and the disjoining pressure in a thin film. It was found that the kinetics curves obtained with hydrophilic surfaces can be fitted to the theory with the disjoining pressure calculated from the DLVO theory. With hydrophobized surfaces, however, the kinetics curves can be fitted only by assuming the presence of a non-DLVO attractive force (or hydrophobic force) in the wetting films. The results obtained in the present work shows that long-range hydrophobic forces is responsible for the faster drainage of wetting film. It is shown that the changes in hydrophobic forces upon the thin water film between air bubble and hydrophobic surface is dependent on hydrophobizing agent concentration, immersion time and the electrolyte concentration in solution. The obtained hydrophobic forces constant in wetting film K132 is compared with the hydrophobic forces constant between two solid surfaces K131 to verify the combining rule for flotation.<br>Master of Science
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8

Boyett, Robin Ernest. "Computational studies of hydrophobic porphyrins." Thesis, University of Sussex, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241621.

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Yang, Fan 1980. "Solvent mediated interaction between hydrophobic spheres." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84087.

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We develop a coarse grained methodology to study solvent mediated interactions between two or more hydrophobic spheres. The free energy of a configuration of two hydrophobic hard spheres is calculated as a function of their separation to understand the thermodynamic force between them mediated by water. The range of the hydrophobic interaction is found to be of the order of the equilibrium correlation length of water; beyond this range the hydrophobicity induced force is negligible. We also examine the free energy landscape corresponding to the two interacting hydrophobic spheres, and find a new intermediate state between the two states of separate and non-interacting spheres and a weakly bound cluster. The nature of this intermediate state changes depending on the size of the spherical particles, and even disappears beyond a minimum critical radius. Our results are relevant to the understanding of hydrophobic mediated interactions in coarse grained models of protein folding and protein protein interactions which, to date, have only accounted for hydrophobicity in an empirical way.
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Lipnizki, Frank. "Hydrophobic pervaporation : process integration and optimisation." Thesis, University of Bath, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343775.

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Libros sobre el tema "Hydrophobic"

1

Eunice, Li-Chan, ed. Hydrophobic interactions in food systems. Boca Raton, Fla: CRC Press, 1988.

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Tuulmets, Ants. Ultrasound and hydrophobic interactions in solutions. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Li, Zhaohao, Jinjin Yang, Hongming Fu, and Haiping Chen. Hydrophobic Ceramic Membranes for CO2 Capture. Cham: Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-77678-6.

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1936-, Laskowski J., Poling G. W, and Conference of Metallurgists (34th : 1995 : Vancouver, B.C.), eds. Processing of hydrophobic minerals and fine coal. Montréal, Qué: Canadian Institute of Mining, Metallurgy and Petroleum, 1995.

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Hansch, Corwin H. Exploring QSAR: Hydrophobic, electronic, and steric constants. Washington, D.C: American Chemical Society, 1995.

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Tronin, V. N. Energetics and percolation properties of hydrophobic nanoporous media. Hauppauge, N.Y: Nova Science Publishers, 2010.

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Pomroy, Neil Christopher. Solubilization of hydrophobic peptides by reversible cysteine PEGylation. Ottawa: National Library of Canada, 1999.

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Filho, Murillo Villela. Enantioselective reduction of hydrophobic keto compounds in multiphase bioreactor. Jülich: Forschungszentrum, Zentralbibliothek, 2007.

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Rekker, Roelof F. Calculation of drug lipophilicity: Tte hydrophobic fragmental constant approach. Weinheim: VCH, 1992.

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M, Gschwend P., and Environmental Research Laboratory (Athens, Ga.), eds. Modeling the benthos-water column exchange of hydrophobic chemicals. Athens GA: U.S. Environmental Protection Agency, Environmental Research Laboratory, 1987.

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Capítulos de libros sobre el tema "Hydrophobic"

1

Kook, Daniel, Mehdi Shajari, and Thomas Kohnen. "Hydrophobic." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35951-4_487-3.

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Kook, Daniel, Mehdi Shajari, and Thomas Kohnen. "Hydrophobic." In Encyclopedia of Ophthalmology, 900–901. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_487.

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Gooch, Jan W. "Hydrophobic." In Encyclopedic Dictionary of Polymers, 376. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6137.

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Gooch, Jan W. "Hydrophobic." In Encyclopedic Dictionary of Polymers, 376. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6138.

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Gooch, Jan W. "Hydrophobic." In Encyclopedic Dictionary of Polymers, 900. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13963.

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Thakur, Kirti, Swaroop Gharde, Sarang Jamdade, and Balasubramanian Kandasubramanian. "Hydrophobic and Super-Hydrophobic Polymer Coatings." In Smart Polymers, 225–44. New York: CRC Press, 2022. http://dx.doi.org/10.1201/9781003037880-11.

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Pratt, Lawrence. "Hydrophobic Effect." In Encyclopedia of Astrobiology, 1–3. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_704-3.

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Pratt, Lawrence. "Hydrophobic Effect." In Encyclopedia of Astrobiology, 1152–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_704.

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Liu, Fu. "Hydrophobic Membranes." In Encyclopedia of Membranes, 1001. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_1678.

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Olea, Andrés F. "Hydrophobic Polyelectrolytes." In Ionic Interactions in Natural and Synthetic Macromolecules, 211–33. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118165850.ch7.

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Actas de conferencias sobre el tema "Hydrophobic"

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Koene, Bryan E., Adam Goff, Tammy Metroke, and Alaina McGregor. "Durable Hydrophobic Coatings for Metal Corrosion Protection." In CORROSION 2015, 1–8. NACE International, 2015. https://doi.org/10.5006/c2015-05673.

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Abstract An exceptionally durable, transparent fluid resistant coating has been developed for corrosion mitigation on selected metals and alloys. This new coating is being presented as new surface treatment for improved protection of metallic substrates. There have been many recent research and commercial efforts in the area of hydrophobic or water repellent coatings that have demonstrated the ability to shed fluids quickly off of surfaces. Whereas many technologies and coatings have achieved the primary goal of achieving fluid shedding properties, they have all lacked mechanical / environmental durability, or are difficult and expensive to apply. This new polymer-inorganic hybrid coating has a unique combination of fluid repellency and exceptional toughness for abrasion resistance and environmental stability. This coating formulation can be easily applied in a single step by dip, flow, brush, or spray with excellent adhesion to multiple surfaces including glass, plastic, paint, and a variety of metallic materials. These hydrophobic/oleophobic coatings possess low surface energy leading to easy cleaning, rain repellency, and excellent corrosion resistance. In addition to good fluid shedding properties, the coatings have significantly higher density than traditional organic polymer coatings and are electrically insulating, resulting in improved barrier properties to water and corrosive ion permeation. This paper describes the novel coating with excellent watershedding properties, transparency, and abrasion resistance, resulting in improved corrosion resistance. The protective coatings have numerous uses for automotive, aerospace, marine, and industrial applications.
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Peters, John. "Hydrophobic Coatings: Water Is No Match for Me." In Coatings+ 2019, 1–6. SSPC, 2019. https://doi.org/10.5006/s2019-00041.

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Framatome identified a need to reduce radioactive contaminants on plant equipment and vendor supplied tooling, through the use of hydrophobic coatings, as a potential cost savings within the Nuclear Industry.
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Hirano, Susumu, Ayano Yasui, Hirotaka Mizukami, Tatsuya Sei, and Toshiyuki Sunaba. "Effect of Hydrophobic Interaction on Corrosion Inhibitor Efficiency." In CONFERENCE 2022, 1–12. AMPP, 2022. https://doi.org/10.5006/c2022-17597.

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Abstract Surfactants are well known as an active ingredient of corrosion inhibitors; however, the molecular structure and its content of commercial inhibitors are not disclosed to users. The performance of commercial inhibitors was studied by treating the whole aspect of inhibitor as a kind of surfactant. The corrosion rate was measured with an autoclave by using an electrochemical measurement; namely, linear polarization resistance (LPR) in an oil flowline condition solution. Firstly, the corrosion rate was measured only with a corrosion inhibitor, and a hydrocarbon solvent was added afterwards. The decrease of the corrosion rate was observed after an addition of the solvent. Aliphatic, alicyclic and aromatic solvents with different octanol-water partition coefficients, KOW, were tested in the same manner. The inhibitor efficiency was saturated remarkably after the addition of a solvent with high KOW. The synergistic effect with a specific solvent in this test can characterize the hydrophobicity and the adsorption tendency of the commercial inhibitor without close chemical analysis to specify the surfactant in it.
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Kostikov, V. I. "Modified hydrophobic concrete with reinforced hydrophobic properties." In ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ. НИЦ «Л-Журнал», 2018. http://dx.doi.org/10.18411/lj-05-2018-89.

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McNeely, Michael R., Mark K. Spute, Nadeem A. Tusneem, and Arnold R. Oliphant. "Hydrophobic microfluidics." In Symposium on Micromachining and Microfabrication, edited by Chong H. Ahn and A. Bruno Frazier. SPIE, 1999. http://dx.doi.org/10.1117/12.359339.

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Mejias-Brizuela, N. Y., A. Olivares-Pérez, G. Páez-Trujillo, M. P. Hernández-Garay, R. Fontanilla-Urdaneta, and I. Fuentes-Tapia. "Hydrophobic sugar holograms." In Integrated Optoelectronic Devices 2008, edited by Hans I. Bjelkhagen and Raymond K. Kostuk. SPIE, 2008. http://dx.doi.org/10.1117/12.761994.

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Thakkar, Shraddha, Rosa I. Sanchez, Chidambaram Bhuveneswaran, Cesar M. Compadre, and Olga Tarasenko. "EXPLORING HYDROPHOBIC BINDING SURFACES USING COMFA AND FLEXIBLE HYDROPHOBIC LIGANDS." In BIOLOGY, NANOTECHNOLOGY, TOXICOLOGY, AND APPLICATIONS: Proceedings of the 5th BioNanoTox and Applications International Research Conference. AIP, 2011. http://dx.doi.org/10.1063/1.3587465.

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Wu, Xiao, Ke Ji, Rixin Wang, Yusuke Tahara, Rui Yatabe, and Kiyoshi Toko. "Taste sensor using strongly hydrophobic membranes to measure hydrophobic substances." In 2016 10th International Conference on Sensing Technology (ICST). IEEE, 2016. http://dx.doi.org/10.1109/icsenst.2016.7796341.

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Yamaguchi, Haruki, Teruko Toyoda, and Tsutomu Arakawa. "COMPLEX-TYPE N-GLYCANS HAVE A HYDROPHOBIC PLANE AND STABILIZE PROTEIN CONFORMATION THROUGH HYDROPHOBIC INTERACTIONS WITH HYDROPHOBIC PROTEIN SURFACE." In XXIst International Carbohydrate Symposium 2002. TheScientificWorld Ltd, 2002. http://dx.doi.org/10.1100/tsw.2002.571.

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Klicova, Marketa, Lukas Volesky, Andrea Klapstova, Vaclav Liska Jachym Rosendorf, Richard Palek, and Jana Horakova. "Hydrophobic Ultrafine Hyaluronic Acid Nanofibers." In The 5th World Congress on New Technologies. Avestia Publishing, 2019. http://dx.doi.org/10.11159/icnfa19.151.

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Informes sobre el tema "Hydrophobic"

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BUNKER, BRUCE C., DALE L. HUBER, MICHAEL S. KENT, HYUN YIM, JOHN G. CURRO, GABRIEL P. LOPEZ, JAMES G. KUSHMERICK, RONALD P. MANGINELL, and SERGIO MENDEZ. Switchable Hydrophobic-Hydrophilic Surfaces. Office of Scientific and Technical Information (OSTI), December 2002. http://dx.doi.org/10.2172/806703.

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Drzymala, J., and T. D. Wheelock. Air agglomeration of hydrophobic particles. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/204691.

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Ioannides, Constantin G. Tumor Immunity by Hydrophobic Bearing Antigens. Fort Belvoir, VA: Defense Technical Information Center, July 2004. http://dx.doi.org/10.21236/ada436894.

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Ioannides, Constantin G. Tumor Immunity by Hydrophobic Appendage Bearing Antigens. Fort Belvoir, VA: Defense Technical Information Center, July 2002. http://dx.doi.org/10.21236/ada410277.

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Yoon, R., and G. Luttrell. Development of the Selective Hydrophobic Coagulation process. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/7055229.

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Yoon, R. H., and G. H. Luttrell. Development of the selective hydrophobic coagulation process. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6879257.

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Cardin, Karl. Jet Rebound from Hydrophobic Substrates in Microgravity. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6706.

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Chefetz, Benny, and Baoshan Xing. Sorption of hydrophobic pesticides to aliphatic components of soil organic matter. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587241.bard.

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Sorption of hydrophobic compounds to aliphatic components of soil organic matter (SOM) is poorly understood even though these aliphatic carbons are a major fraction of SOM. The main source of aliphatic compounds in SOM is above- and below-ground plant cuticular materials (cutin, cutan and suberin). As decomposition proceeds, these aliphatic moieties tend to accumulate in soils. Therefore, if we consider that cuticular material contributes significantly to SOM, we can hypothesize that the cuticular materials play an important role in the sorption processes of hydrophobic compounds (including pesticides) in soils, which has not yet been studied. The overall goal of this research was to illustrate the mechanism and significance of the refractory aliphatic structures of SOM in sorbing hydrophobic compounds (nonionic and weakly polar pesticides). The importance of this study is related to our ability to demonstrate the sorption relationship between key pesticides and an important fraction of SOM. The specific objectives of the project were: (1) To isolate and characterize cuticular fractions from selected plants; (2) To investigate the sorption mechanism of key hydrophobic pesticides and model compounds to cuticular plant materials; (3) To examine the sorption mechanisms at the molecular level using spectroscopic techniques; (4) To investigate the sorption of key hydrophobic pesticides to synthetic polymers; (5) To evaluate the content of cuticular materials in agricultural soils; and (6) To study the effect of incubation of plant cuticular materials in soils on their sorptive capabilities. This project demonstrates the markedly high sorption capacity of various plant cuticular fractions for hydrophobic organic compounds (HOCs) and polar organic pollutants. Both cutin (the main polymer of the cuticle) and cutan biopolymers exhibit high sorption capability even though both sorbents are highly aliphatic in nature. Sorption by plant cuticular matter occurs via hydrophobic interactions and H-bonding interactions with polar sorbates. The cutin biopolymer seems to facilitate reversible and noncompetitive sorption, probably due to its rubbery nature. On the other hand, the epicuticular waxes facilitate enhance desorption in a bi-solute system. These processes are possibly related to phase transition (melting) of the waxes that occur in the presence of high solute loading. Moreover, our data highlight the significance of polarity and accessibility of organic matter in the uptake of nonpolar and polar organic pollutants by regulating the compatibility of sorbate to sorbent. In summary, our data collected in the BARD project suggest that both cutin and cutan play important roles in the sorption of HOCs in soils; however, with decomposition the more condensed structure of the cutin and mainly the cutan biopolymer dominated sorption to the cuticle residues. Since cutin and cutan have been identified as part of SOM and humic substances, it is suggested that retention of HOCs in soils is also controlled by these aliphatic domains and not only by the aromaticrich fractions of SOM.
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Marín Boyero, Adrián, and Miguel Angel Rodriguez Valverde. Shear adhesion of a sessile drop under a centrifugal field. Fundación Avanza, May 2023. http://dx.doi.org/10.60096/fundacionavanza/1542022.

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EVANS, LINDSEY, and JAMES E. MILLER. Sweeping Gas Membrane Desalination Using Commercial Hydrophobic Hollow Fiber Membranes. Office of Scientific and Technical Information (OSTI), January 2002. http://dx.doi.org/10.2172/793312.

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