Bibliografías temáticas / Gels and Hydrogels

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Literatura académica sobre el tema "Gels and Hydrogels"

Autor: Grafiati
Publicado: 23 de noviembre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Gels and Hydrogels"

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Xu, Bo, Yuwei Liu, Lanlan Wang, et al. "High-Strength Nanocomposite Hydrogels with Swelling-Resistant and Anti-Dehydration Properties." Polymers 10, no. 9 (2018): 1025. http://dx.doi.org/10.3390/polym10091025.

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Hydrogels with excellent mechanical properties have potential for use in various fields. However, the swelling of hydrogels under water and the dehydration of hydrogels in air severely limits the practical applications of high-strength hydrogels due to the influence of air and water on the mechanical performance of hydrogels. In this study, we report on a kind of tough and strong nanocomposite hydrogels (NC-G gels) with both swelling-resistant and anti-dehydration properties via in situ free radical copolymerization of acrylic acid (AA) and N-vinyl-2-pyrrolidone (VP) in the water-glycerol bi-s
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Abhishek, Soni 1. *. Dr. Amit Chaudhary 1. Dr. Shivali Singla 2. Dr. Sachin Goyal 2. "REVIEW ON: NOVEL APPROACH IN PHARMACEUTICAL GEL." Journal of Pharma Research 8, no. 6 (2019): 429–35. https://doi.org/10.5281/zenodo.3265342.

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<strong><em>ABSTRACT</em></strong> <strong><em>R</em></strong><em>eview on novel approach in pharmaceutical gel explains about gels and its novel development as hydrogel. Gel which is defined as intermediate state of matter consists of liquid and solid components. Hydrogels are also briefly discussed in the review that is defined as three dimensional structures which has capacity to retain bulk amount of water and also biological fluids to swell. In novel approach in pharmaceutical gel is In-Situ gels. In-situ gels are type of hydrogels that are solution in form and undergo gelation in contact
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Burchak, Vadym, Fritz Koch, Leonard Siebler, et al. "Evaluation of a Novel Thiol–Norbornene-Functionalized Gelatin Hydrogel for Bioprinting of Mesenchymal Stem Cells." International Journal of Molecular Sciences 23, no. 14 (2022): 7939. http://dx.doi.org/10.3390/ijms23147939.

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Introduction: Three-dimensional bioprinting can be considered as an advancement of the classical tissue engineering concept. For bioprinting, cells have to be dispersed in hydrogels. Recently, a novel semi-synthetic thiolene hydrogel system based on norbornene-functionalized gelatin (GelNB) and thiolated gelatin (GelS) was described that resulted in the photoclick hydrogel GelNB/GelS. In this study, we evaluated the printability and biocompatibility of this hydrogel system towards adipose-tissue-derived mesenchymal stem cells (ASCs). Methods: GelNB/GelS was synthesized with three different cro
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Naficy, Sina, Hugh R. Brown, Joselito M. Razal, Geoffrey M. Spinks, and Philip G. Whitten. "Progress Toward Robust Polymer Hydrogels." Australian Journal of Chemistry 64, no. 8 (2011): 1007. http://dx.doi.org/10.1071/ch11156.

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In this review we highlight new developments in tough hydrogel materials in terms of their enhanced mechanical performance and their corresponding toughening mechanisms. These mechanically robust hydrogels have been developed over the past 10 years with many now showing mechanical properties comparable with those of natural tissues. By first reviewing the brittleness of conventional synthetic hydrogels, we introduce each new class of tough hydrogel: homogeneous gels, slip-link gels, double-network gels, nanocomposite gels and gels formed using poly-functional crosslinkers. In each case we prov
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Bhuyan, Md Murshed, and Jae-Ho Jeong. "Gels/Hydrogels in Different Devices/Instruments—A Review." Gels 10, no. 9 (2024): 548. http://dx.doi.org/10.3390/gels10090548.

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Owing to their physical and chemical properties and stimuli-responsive nature, gels and hydrogels play vital roles in diverse application fields. The three-dimensional polymeric network structure of hydrogels is considered an alternative to many materials, such as conductors, ordinary films, constituent components of machines and robots, etc. The most recent applications of gels are in different devices like sensors, actuators, flexible screens, touch panels, flexible storage, solar cells, batteries, and electronic skin. This review article addresses the devices where gels are used, the progre
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Shoukat, Hina, Fahad Pervaiz, and Sobia Noreen. "Novel Crosslinking Methods to Design Hydrogels." Global Pharmaceutical Sciences Review I, no. I (2016): 1–5. http://dx.doi.org/10.31703/gpsr.2016(i-i).01.

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Hydrogels are presently under consideration as matrices for the controlled bioactive molecules delivery particularly proteins and for living cells encapsulation. For these applications, gels must undergo degradation under physiological conditions. This overview summarized and discussed the various physical and chemical crosslinking methods to design hydrogels that are biodegradable. Highly versatile method to prepare hydrogels with good mechanical stability is chemical crosslinking. However, the crosslinker employed can give undesirable reactions with the bioactive substances present in the hy
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Li, Peng, Nam Hoon Kim, Sambhu Bhadra, and Joong Hee Lee. "Electroresponsive Property of Novel Poly(acrylate- acryloyloxyethyl trimethyl ammonium chloride)/Clay Nanocomposite Hydrogels." Advanced Materials Research 79-82 (August 2009): 2263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.2263.

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The poly(acrylate-acryloyloxyethyl trimethyl ammonium chloride)/clay nanocomposite hydrogels (poly(AAc-DAc)/clay NC gels) with different clay contents were prepared by using clay as a cross-linker. The hydrogel exhibited good electroresponsive property and excellent mechanical property. The hydrogels initially bent toward the cathode side followed by anode side under an electric field. Concentrations of NaCl solution, voltage of electric field and clay content of the hydrogels have significant effects on the electroresponsive property of the hydrogels. Clay exhibited two opposite effects on th
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Durgesh, R. Patil, B. Patil Chandani, N. Patil Amruta, and P. Pawar Dr.Sunil. "An Review of the Innovative Method used in Medicinal Gels." Journal of Advanced Research and Reviews in Virology & Microbiology 1, no. 2 (2024): 1–12. https://doi.org/10.5281/zenodo.11368052.

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<em>An overview of the innovative method used in medicinal gels describes gels and their groundbreaking creation as hydrogels. Gel is an intermediate state of matter made up of both solid and liquid constituents. The paper also includes a brief discussion on hydrogels, which are three-dimensional structures that have the ability to hold biological fluids and a significant amount of water without swelling. In-Situ gels are an innovative method in pharmaceutical gel. Hydrogels with a solution form that gel when in touch with bodily fluids or when their pH changes are known as in-situ gels. A num
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Gorantla, Srividya, Tejashree Waghule, Vamshi Krishna Rapalli, et al. "Advanced Hydrogels Based Drug Delivery Systems for Ophthalmic Delivery." Recent Patents on Drug Delivery & Formulation 13, no. 4 (2020): 291–300. http://dx.doi.org/10.2174/1872211314666200108094851.

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Hydrogels are aqueous gels composed of cross-linked networks of hydrophilic polymers. Stimuli-responsive based hydrogels have gained focus over the past 20 years for treating ophthalmic diseases. Different stimuli-responsive mechanisms are involved in forming polymer hydrogel networks, including change in temperature, pH, ions, and others including light, thrombin, pressure, antigen, and glucose-responsive. Incorporation of nanocarriers with these smart stimuli-responsive drug delivery systems that can extend the duration of action by increasing ocular bioavailability and reducing the dosing f
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Fallon, Halligan, Pezzoli, Geever, and Higginbotham. "Synthesis and Characterisation of Novel Temperature and pH Sensitive Physically Cross-Linked Poly (N-vinylcaprolactam-co-itaconic Acid) Hydrogels for Drug Delivery." Gels 5, no. 3 (2019): 41. http://dx.doi.org/10.3390/gels5030041.

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Previous studies involving poly N-vinylcaprolactam (PNVCL) and itaconic acid (IA) have synthesised the hydrogels with the presence of a solvent and a crosslinker, producing chemically crosslinked hydrogel systems. In this study, however, temperature sensitive PNVCL was physically crosslinked with a pH-sensitive comonomer IA through ultraviolet (UV) free-radical polymerization, without the presence of a solvent, to produce hydrogels with dual sensitivity. The attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy indicated successful polymerisation of the hydrogels. The
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Tesis sobre el tema "Gels and Hydrogels"

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Vaculíková, Hana. "Hyaluronan hydrogels." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401877.

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In this thesis there was preparation optimized for agarose-gelatin hydrogels with addition of various concentrations of low-molecular and high-molecular hyaluronan and than there were examined viscoelastic properties of them by rheological oscilation tests and high-resolution ultrasonic spektrometry. By rheology were measured values of elastic and viscous modulus for selected amplitude of strain, oscilation frequencies and temperatures. In the second method there were recorded values of ultrasonic velocities of samples at temperature scanning from 85 to 25 °C and from 25 to 85 °C in HR-US 102,
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Shukla, Pranav. "Inducing Liquid Evaporation with Hygroscopic Gels." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/101555.

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Mammals secrete fluids from the sweat glands known as perspiration which helps in thermoregulation. However, sweat can interfere with vision, comfort, grip, and results in malodor due to bacterial action. To combat the aforementioned issues, antiperspirants are widely used personal hygiene products to stop the sweat by blocking the sweat glands. Typically, aluminum salts present in the antiperspirants dissolve in the sweat and create a temporary plug to cut the flow of sweat. However, there has been a long debate going on the safety concerns of aluminum-based antiperspirants. Although there is
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Park, Tae Gwan. "Immobilized biocatalysts in stimuli-sensitive hydrogels /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/8070.

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Rehab, M. M. A. M. "Preparation and characterization of copolymeric hydrogels." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381697.

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Gräfe, David. "Tetra-Responsive Grafted Hydrogels for Flow Control in Microfluidics." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-219926.

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Microfluidics covers the science of manipulating small quantities of fluids using microscale devices with great potential in analysis, multiplexing, automation and high-throughput screening. Compared to conventional systems, microfluidics benefits from miniaturization resulting in shortened time of experiments, decreased sample and reagent consumptions as well as reduced overall costs. For microfluidic devices where further weight and cost reduction is additionally required, stimuli-responsive hydrogels are particularly interesting materials since they can convert an environmental stimulus dir
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Singh, Nishant. "Functional gels as microreactors." Doctoral thesis, Universitat Jaume I, 2016. http://hdl.handle.net/10803/397698.

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Functionalized Hydrogels upon self-assembly demonslrate enzyme like catalysis owing to the formatin of hydrophobic pockets, increased local concentration of the catalytic sites, pKa change, pH shift etc. Here we present such hydrogelators being able to demonstrate enhanced catalysis for a range of reactions such as aldol, mannich, ester hydrolysis, deacetalisation etc.<br>Hidrogelantes funcionalizados sobre autoensamblaje pueden demostrar como la catálisis enzimática mejorada basada en varios factores tales como bolsillos hidrofóbicos, cambio en pH, cambio en pKa, aumento en la concentració
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Mujeeb, Ayeesha. "Self-assembled octapeptide gels for cartilage repair." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/selfassembled-octapeptide-gels-for-cartilage-repair(ce161da3-4ce4-4d42-b0cc-6933fc6aa394).html.

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Molecular self-assembly provides a simple and efficient route of constructing well-defined nanostructures which may serve as extra cellular matrix (ECM) mimics. This work focuses on two specific octapeptides: FEFEFKFK and FEFKFEFK (F: phenylalanine, E: glutamic acid, K: lysine) with alternating charge distribution. The peptides were shown to self-assemble in solution and form β-sheet rich nanofibres which, above a critical gelation concentration (CGC), entangle to form self-supporting hydrogels. The fibre morphology of the hydrogels was analysed using TEM and Cryo-SEM illustrating the dense fi
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Buerkle, Lauren Elizabeth. "Tailoring the Properties of Supramolecular Gels." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1317946752.

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Gruberová, Eliška. "Gelace hydrofobizovaného hyaluronanu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449414.

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This diploma thesis deals with hyaluronan modified by palmitoyl and its gelation. Gels were created from palmitoyl hyaluronan with molecular weight 216 kDa and degree of substitution 11 % in concentrations 15 and 20 g dm-3 in water and concentrations 10, 15, 20 g dm-3 in NaCl and TSB. Also gel from palmitoyl hyaluronan with molecular weight 35 kDa and degree of substitution 10 % in concentrations 20, 30 g dm-3 in NaCl was created. Gels were investigated concerning medical applications. Gels were rigid and had very good properties, which was confirmed by rheology. The physical properties (pH
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Le, blay Heiva. "Use of shear wave imaging to assess the mechanical and fracture behaviors of tough model gels." Electronic Thesis or Diss., Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLS096.

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Un hydrogel est un matériau mou, largement gonflé d’eau, rendu élastique via un réseau de chaînes de polymère. Un gel est intrinsèquement fragile. On peut remédier à cette fragilité grâce à l’ajout de liaisons sacrificielles dynamiques. L’ingénierie macromoléculaire a permis au XXIème siècle de formuler des gels à destination de la biologie afin de proposer des matériaux de synthèse tout en remédiant aux problèmes de biocompatibilité, à la compatibilité des interfaces tissu/matériau et des propriétés mécaniques dont le corps a besoin. Pourtant, la fracture de ces matériaux hautement déformable
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Libros sobre el tema "Gels and Hydrogels"

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Park, Kinam. Biodegradable hydrogels for drug delivery. Technomic Pub., 1993.

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M, Ottenbrite Raphael, Huang Samuel J. 1937-, Park Kinam, American Chemical Society Meeting, and American Chemical Society. Division of Polymer Chemistry. (Washington, D.C.), eds. Hydrogels and biodegradable polymers for bioapplications. American Chemical Society, 1996.

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Scott, Adams, Palaszewski Bryan, and United States. National Aeronautics and Space Administration., eds. Nanoparticulate gellants for metallized gelled liquid hydrogen wth aluminum. National Aeronautics and Space Administration, 1996.

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B, Sunkara H., and United States. National Aeronautics and Space Administration., eds. Design of intelligent mesoscale periodic array structures utilizing smart hydrogel. National Aeronautics and Space Administration, 1996.

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Hydrogels in medicine and pharmacy. CRC Press, 1986.

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Peppas, Nikolaos. Hydrogels in Medicine and Pharmacy: Fundamentals. CRC Press, 1987.

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Park, Kinam, Haesun Park, and Waleed S. W. Shalaby. Biodegradable Hydrogels for Drug Delivery. Taylor & Francis Group, 1993.

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Park, Kinam, Haesun Park, and Waleed S. W. Shalaby. Biodegradable Hydrogels for Drug Delivery. Taylor & Francis Group, 1993.

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Park, Kinam, Haesun Park, and Waleed S. W. Shalaby. Biodegradable Hydrogels for Drug Delivery. Taylor & Francis Group, 1993.

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Gels Handbook : Fundamentals, Properties and ApplicationsVolume 1 : Fundamentals of Hydrogelsvolume 2 : Applications of Hydrogels in Regenerative Medicinevolume 3: Application of Hydrogels in Drug Delivery and Biosensing. World Scientific Publishing Co Pte Ltd, 2016.

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Capítulos de libros sobre el tema "Gels and Hydrogels"

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Brøndsted, Helle, and Jindřich Kopeček. "pH-Sensitive Hydrogels." In Polyelectrolyte Gels. American Chemical Society, 1992. http://dx.doi.org/10.1021/bk-1992-0480.ch017.

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Kong, Weiqing, Qingqing Dai, Cundian Gao, Junli Ren, Chuanfu Liu, and Runcang Sun. "Hemicellulose-Based Hydrogels and Their Potential Application." In Polymer Gels. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6086-1_3.

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Osada, Yoshihito, Ryuzo Kawamura, and Ken-Ichi Sano. "Biomimetic Functions of Synthetic Polymer Gels." In Hydrogels of Cytoskeletal Proteins. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27377-8_7.

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Gitsov, Ivan, Thomas Lys, and Chao Zhu. "Amphiphilic Hydrogels with Highly Ordered Hydrophobic Dendritic Domains." In Polymer Gels. American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0833.ch015.

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Dualeh, Abdulkadir J., and Carol A. Steiner. "Structure and Properties of Surfactant-Bridged Viscoelastic Hydrogels." In Polyelectrolyte Gels. American Chemical Society, 1992. http://dx.doi.org/10.1021/bk-1992-0480.ch003.

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Oppermann, W. "Swelling Behavior and Elastic Properties of Ionic Hydrogels." In Polyelectrolyte Gels. American Chemical Society, 1992. http://dx.doi.org/10.1021/bk-1992-0480.ch010.

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Dong, Liang Chang, and Allan S. Hoffman. "Thermally Reversible Hydrogels." In Reversible Polymeric Gels and Related Systems. American Chemical Society, 1987. http://dx.doi.org/10.1021/bk-1987-0350.ch016.

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Chau, Mokit, Shivanthi Easwari Sriskandha, Héloïse Thérien-Aubin, and Eugenia Kumacheva. "Supramolecular Nanofibrillar Polymer Hydrogels." In Supramolecular Polymer Networks and Gels. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15404-6_5.

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Allcock, Harry R., and Archel Ambrosio. "Synthesis and Characterization of pH-Responsive Poly(organophosphazene) Hydrogels." In Polymer Gels. American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0833.ch006.

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Pape, A. C. H., and Patricia Y. W. Dankers. "Supramolecular Hydrogels for Regenerative Medicine." In Supramolecular Polymer Networks and Gels. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15404-6_7.

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Actas de conferencias sobre el tema "Gels and Hydrogels"

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Shukla, Pavan K., Len J. Krissa, and Jerry DeWitt. "Overall Effect of Vapor Corrosion Inhibitors on Casing Corrosion Mitigation." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-10901.

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Abstract This work was conducted to evaluate effectiveness of the vapor corrosion inhibitors (VCIs) in the cased-crossing application. Specifically, the work was conducted to characterize electrochemical properties of two commercially available VCIs, and their effect on delivery of cathodic protection (CP) current to carrier pipe. Both experimental and modeling studies were conducted. Experimental studies were conducted with VCI gels, VCI only, and gel only solutions. Modeling was conducted to estimate the diversion of the CP current to casing when casing annuli are filled with the VCI gel sol
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Kivisakk, Ulf H., Björn Bosbach, Emil Cederberg, Ulrika Borggren, and Nian Zhou. "Stainless Steels for Automotive Applications – Hydrogen Embrittlement Testing for High Pressure Hydrogen Gas Using Different Methods." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19241.

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Abstract Hydrogen for use as fuel gets more and more attention and stainless steels can be used for tubing as and fittings or for the boss in the gas tank. The susceptibility to hydrogen embrittlement of three austenitic stainless steels was tested by different methods for use in high pressure hydrogen. Two versions of UNS S31603 stainless steel with high and low nickel content as well as UNS S31675 and UNS S21900 both with a higher mechanical strength were investigated. The tests included a variety of conditions, e.g., with and without hydrogen environment, in-situ charging and pre-charging,
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Zhang, Xueyuan, Enhou Han, Yuanlong Du, and Xiaohui Liu. "Development of Hydrogen Sensors and Application in China." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02343.

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Abstract Four new types of hydrogen sensor were developed and devised in our research group based on the electrochemical mechanism raised by Devanathan and Stachurski in 1962, which could easily measure the hydrogen permeation rate by attaching on the surface of the equipment or inserting into the reactor or pipelines. In this paper, the structures of four types and their application in oil and gas or refining industry were described. The fourth type was specially described in detail. The fourth type of hydrogen sensor developed in our lab was devised according to the operating condition and s
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Morovati, Vahid, Mohammad Ali Saadat, and Roozbeh Dargazany. "Modelling Stress Softening and Necking Phenomena in Double Network Hydrogels." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-12253.

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Abstract Double network (DN) gels are three-dimensional polymer matrices formed by interpenetrating networks. In contrast to the conventional single-network gels, DN gels have significant toughness, which makes them a promising material for different biomedical and biological applications. However, DN gels show complicated inelastic behavior including the Mullins effect and necking instability. Despite extensive efforts on modelling different aspects of the damage process in gels, the micro-mechanical modelling of the mechanisms that lead to necking in DN gels remains to be a challenging task.
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Geisler, Chris G., Ho-Lung Li, David M. Wootton, Peter I. Lelkes, and Jack G. Zhou. "Soft Biomaterial Study for 3-D Tissue Scaffold Printing." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34274.

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In 3-D scaffold printing, it is critical to find a material that is suitable for your printing method, printing speed, and ease of use. For a biomaterial to best suit solid freeform fabrication techniques, it must: 1) be a low-viscous solution before being printed, 2) involve easily joined on-substrate mixing to form a homogenous gel, 3) have a short solution to gel transition time, 4) be a mechanically strong gel, and 5) have an irreversible gelation processes. Ionic crosslinkable, photocrosslinkable, and thermo-sensitive hydrogels have all been investigated and found to not fully satisfy our
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Vicente, Adam, Zachary McCreery, and Karen Chang Yan. "Printability of Hydrogels for Hydrogel Molding Based Microfluidic Device Fabrication." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11545.

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Abstract Microfabrication-free methods have been developed in recent years for fabricating microfluidic devices to enable the applications of microfluidic devices to a broader range. Our group has been working on developing a process for fabricating electrospun fiber embedded microfluidic devices by integrating hydrogel molding (HGM) and electrospinning (ES), and the feasibility of this integrated method has been demonstrated through our initial study. Recently, we have modified an extrusion based 3D printer kit to deposit hydrogels and form microchannels. Agarose has been used for our previou
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Haraguchi, Kazutoshi, and Toru Takehisa. "Novel Manufacturing Process of Nanocomposite Hydrogel For Bio-Applications." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80533.

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A novel class of nanocomposite hydrogels (NC gels) with a unique organic / inorganic network structure was synthesized by in-situ free-radical polymerization of N-isopropylacrylamide (NIPA) or N,N-dimethylacrylamide (DMAA) in the presence of inorganic clay (hectorite). Since NC gels are composed of a unique organic / inorganic network structure, which consists of exfoliated clay platelets uniformly dispersed in an aqueous medium with a number of flexible polymer chains linking them together, NC gels exhibit high transparency, high degrees of swelling, and superb mechanical properties with extr
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Morovati, Vahid, and Roozbeh Dargazany. "Micro-Mechanical Modeling of the Stress Softening in Double-Network Hydrogels." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88252.

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While single network hydrogels show limited extensibility and low strength, double-network hydrogels benefit from significantly high stretchability and toughness due to their reinforcing mechanism of combining two soft and rigid networks. Here, a micro-mechanical model is developed to characterize the constitutive behavior of DN hydrogels in quasi-static large deformation. In particular, we focused on describing the permanent damage in DN gels under large deformations. Irreversible chain detachment and decomposition of the first network are explored as the underlying reasons for the nonlinear
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Thien, Austen, and Kishore Pochiraju. "Additive Manufacturing Techniques for Soft Electroactive Polymer Hydrogels Using a Customized 3D Printer." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72007.

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Electroactive polymers (EAP) have shown promise in producing significant and controllable linear displacement in slim and lightweight packages. EAPs allow for seamless integration and multi-functionality since they are actuated by a driving voltage that could be controlled by a microprocessor. Polyacrylamide (PAAM)/Polyacrylic acid (PAA) hydrogel EAPs are commonly chosen due to their low driving voltage, significant amount of displacement, and rapid manufacturing capabilities, as these gels can be 3D printed. To effectively extrude these gels in 3D printers, their viscosity, gelation time, she
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Marks, William H., Sze C. Yang, George W. Dombi, and Sujata K. Bhatia. "Carbon Nanobrushes Embedded Within Hydrogel Composites for Tissue Engineering." In ASME 2013 2nd Global Congress on NanoEngineering for Medicine and Biology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/nemb2013-93122.

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The objective of this work is to study the effect of carbon nanobrushes embedded within hydrogel composites on tissue engineering. The carbon nanobrushes, providing electrical conductivity to the hydrogels, influence the growth and proliferation of clinically relevant cell lines within the hydrogel composite. The composite is comprised of carbon nanobrushes embedded in a biocompatible poloxamer gel. This work assesses the ability of such composite gels to support the growth of tissue by studying fibroblasts and myoctes, which serve as indicators on the feasibility of this platform eventually s
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Informes sobre el tema "Gels and Hydrogels"

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Benicewicz, Brian C., Glenn A. Eisman, S. K. Kumar, and S. G. Greenbaum. Sol-Gel Based Polybenzimidazole Membranes for Hydrogen Pumping Devices. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1121336.

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พงษ์สามารถ, สุนันท์, วิมลมาศ ลิปิพันธ์ та พนิดา วยัมหสุวรรณ. ศึกษาสารสกัดโพลีแซคคาไรด์จากเปลือกของผลทุเรียนเพื่อใช้ประโยชน์ทางการแพทย์. จุฬาลงกรณ์มหาวิทยาลัย, 2003. https://doi.org/10.58837/chula.res.2003.28.

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แยกสารโพลีแซคคาไรด์ได้ 2 ชนิด จากเปลือกแห้งของผลทุเรียน (Durio zibethinus L.) เตรียมในรูปผงแห้งของ polysaccharide gel (PG) และ polysaccharide fiber (PF) องค์ประกอบธาตุหลักของโพลีแซคคาไรด์ประกอบด้วย Carbon (C) Hydrogen (H) และ Oxygen (O) ในสัดส่วนอะตอมของ C:H:O เท่ากับ 2.9:5.3:3.1 และ 3.5:6.4:3.1 ใน PG และ PF ตามลำดับ PG มีองค์ประกอบของ acidic sugar ได้แก่ galacturonic acid มากกว่าห้าสิบเปอร์เซนต์ ของน้ำหนัก PG และมีน้ำตาล neutral sugar ได้แก่ glucose fructose rhamnose และ arabinose ใน PF มีองค์ประกอบของน้ำตาล glucose เพียงชนิดเดียว ทำการตรวจวิเคราะห์น้ำตาลโดยวิธี colorimetric method TLC และ HP
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Adam, Alexandre, Saadane Rezaiguia, Romain Severac, and Michel Bouquey. Incorporation of aminoalcohols to tune the properties of polyurethane systems. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ps.1.

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It is common practice to incorporate low molecular weight molecules, known as chain extenders, to enhance the performance of polyurethane (PU) material. They usually increase the phase separation between the soft and hard domains, which has a significant impact on the density of hydrogen bonds. Aminoalcohols, molecules with both hydroxyl and amine functional groups, are important building blocks in the synthesis of pharmaceuticals but are also widely used in cosmetics or paints and coatings. Easily derived from abundant natural sources, such as amino acids, aminoalcohols align with the need fo
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