Gotowe bibliografie tematyczne / Nano-hybrid Gels

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Gotowa bibliografia na temat „Nano-hybrid Gels”

Autor: Grafiati

Data publikacji: 7 września 2023

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Artykuły w czasopismach na temat "Nano-hybrid Gels"

Echeverría, Coro, Miguel Rubio i Daniel López. "Thermo-Reversible Hybrid Gels Formed from the Combination of Isotactic Polystyrene and [Fe(II) (4-Octadecyl-1,2,4-Triazole)3(ClO4)2]n Metallo-Organic Polymer: Thermal and Viscoelastic Properties". Polymers 11, nr 6 (1.06.2019): 957. http://dx.doi.org/10.3390/polym11060957.

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Nano-sized one-dimensional metallo-organic polymers, characterized by the phenomenon of spin transition, are excellent candidates for advanced technological applications such as optical sensors, storage, and information processing devices. However, the main drawback of this type of polymers is their fragile mechanical properties, which hinders its processing and handling, and makes their practical use unfeasible. To overcome this problem, in this work, hybrid thermo-reversible gels are synthesized by combination of a metallo-organic polymer and isotactic polystyrene (iPS) in cis-decaline. A detailed investigation of the thermal and viscoelastic properties of the hybrid gels, in terms of iPS and metallo-organic polymer concentration is performed by means of differential scanning calorimetry and oscillatory rheology, respectively. From the analysis of the thermal properties, three transitions have been determined upon heating: Monotectic transition of the iPS gel, melting of the iPS gel, and melting of the metal-organic polymer gel, which suggest that the gels of the two polymers are formed independently in the hybrid gel, as long as the two polymers are in concentrations above the corresponding critical gelation concentrations. Results regarding viscoelastic properties and morphology confirmed that hybrid gels consisted of an interpenetrated network of polymer gels, formed by iPS and metallo-organic poymer gels growing independently.

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Notley, Shannon M., i Drew R. Evans. "Aqueous processing of graphene–polymer hybrid thin film nano-composites and gels". Advances in Colloid and Interface Science 209 (lipiec 2014): 196–203. http://dx.doi.org/10.1016/j.cis.2014.04.006.

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Bag, Braja Gopal, Abir Chandan Barai, Sk Nurul Hasan, Saikat Kumar Panja, Subrata Ghorai i Soumen Patra. "Terpenoids, nano-entities and molecular self-assembly". Pure and Applied Chemistry 92, nr 4 (28.04.2020): 567–77. http://dx.doi.org/10.1515/pac-2019-0812.

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AbstractPlant metabolites being renewable in nature have tremendous significance for the development of a sustainable society. In this manuscript we show that, terpenoids having nanometric lengths, commonly having several functional groups and several centers of chirality, can be utilized as renewable Molecular Functional Nanos (MFNs). The terpenoids spontaneously self-assembled in liquids yielding different morphologies such as vesicles, tubes, flowers, petals and fibers of nano- to micro-meter dimensions and supramolecular gels. The self-assemblies were utilized for the entrapment and release of fluorophores including anticancer drug, pollutant capture, generation of hybrid materials and catalysis.

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Shi, Jun, Li Zhang, Yingliang Liu, Shengang Xu i Shaokui Cao. "Biomineralized organic–inorganic hybrids aiming for smart drug delivery". Pure and Applied Chemistry 86, nr 5 (19.05.2014): 671–83. http://dx.doi.org/10.1515/pac-2013-0112.

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AbstractOrganic–inorganic hybrid materials have received great interest in the last 10 years in the controlled drug delivery area because of their excellent biocompatible, biomimetic, and pH-sensitive properties. Biomineralization is a biomineral-inspired route to prepare novel organic–inorganic hybrids, which involves a diffusion-controlled deposition of inorganic minerals within porous polymeric matrices. Proper combination of controlled biomineralization technique with the rational choice of polymer templates would lead to the successful development of smart self-assembled drug carriers. The present work mainly summarizes our recent work about the biomineralized organic–inorganic hybrid materials aiming for smart drug delivery including hybrid beads, membranes, and micro/nano gels. Furthermore, prospect for future development of the smart organic–inorganic hybrids is also discussed.

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Arruda, Marcela Monice, Marina Augusto Toppino, Gabriela Monteiro Barbosa, Hilton Túlio Costi, Cecy Martins Silva i Jesuína Lamartine Nogueira Araújo. "Effect of Fluoride Gels on the Surface Roughness of Different Composite Resins". Open Dentistry Journal 14, nr 1 (15.10.2020): 474–81. http://dx.doi.org/10.2174/1874210602014010474.

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Background: The pH of fluoride gels influences the roughness of composite resins, which affects their clinical durability. Objective: To evaluate the effect of fluoride gels (1.23% acidified phosphate fluoride and neutral fluoride) on the morphology of different composite resins after finishing and polishing. Methods: We prepared sixty specimens with a diameter of 5 mm and a height of 2 mm. The specimens were then divided into six groups (n = 10), according to the type of composite resin (Z250 micro-hybrid (Z), Filtek Z350 XT nanoparticles (XT), and Tetric N-Ceram nano-hybrid (TC)) and fluoride gel treatment (1.23% acidified phosphate (APF) or neutral fluoride (NF)) to measure surface roughness (Ra). The material was light-cured using an LED-curing unit (Elipar Freelight Deep Cure-3M/ESPE) for 20 s with a light intensity of 1.200 mW/cm2. Ra measurements were performed before and after treatment with different fluoride gels using a rugosimeter (Mitutoyo SJ210). After Ra, we selected two samples from each group for evaluation using scanning electron microscopy. Data were analyzed using the Shapiro-Wilk, ANOVA, and Tukey tests, with a significance of 5%. Results: The average Ra before and after NF did not differ statistically. The average Ra values of the groups treated with APF showed statistically significant differences. The photomicrographs of the groups treated with NF were similar to those of the groups without fluoride treatment. The APF-treated groups showed significant morphological changes. Conclusion: NF did not promote changes in the morphology of the evaluated composite resins, in contrast to APF, which caused significant changes.

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He, Fang, Hai Lei Zhao, Xian Hui Qu, Wei Hua Qiu i Wei Jiang Wu. "Synthesis and Properties of Silica Aerogel by Using Acid Silica Sol and TEOS as Silicon Sources". Key Engineering Materials 336-338 (kwiecień 2007): 1509–12. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1509.

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Silica aerogels were synthesized from hybrid silicon sources of TEOS and acid silica sol by two-step sol-gel method and supercritical drying. Different chemical compositions of the starting solution were altered in order to make an insight into the relationship between process parameters and the microstructural characteristics of resulting silica aerogels. The results indicate that a certain amount of acid silica sol may promote the gelation process while excessive nano-scaled silica particles easily result in dense structure and low specific surface area. The gelation time increases with the increasing water amount. Excessive water will lead to weak network structure of silica gels and thus larger shrinkage and lower porosity of the resulting silica aerogels.

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Marelli, Benedetto, Chiara E. Ghezzi, Dirk Mohn, Wendelin J. Stark, Jake E. Barralet, Aldo R. Boccaccini i Showan N. Nazhat. "Accelerated mineralization of dense collagen-nano bioactive glass hybrid gels increases scaffold stiffness and regulates osteoblastic function". Biomaterials 32, nr 34 (grudzień 2011): 8915–26. http://dx.doi.org/10.1016/j.biomaterials.2011.08.016.

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Boffito, Monica, Carlotta Pontremoli, Sonia Fiorilli, Rossella Laurano, Gianluca Ciardelli i Chiara Vitale-Brovarone. "Injectable Thermosensitive Formulation Based on Polyurethane Hydrogel/Mesoporous Glasses for Sustained Co-Delivery of Functional Ions and Drugs". Pharmaceutics 11, nr 10 (1.10.2019): 501. http://dx.doi.org/10.3390/pharmaceutics11100501.

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Mini-invasively injectable hydrogels are widely attracting interest as smart tools for the co-delivery of therapeutic agents targeting different aspects of tissue/organ healing (e.g., neo-angiogenesis, inflammation). In this work, copper-substituted bioactive mesoporous glasses (Cu-MBGs) were prepared as nano- and micro-particles and successfully loaded with ibuprofen through an incipient wetness method (loaded ibuprofen approx. 10% w/w). Injectable hybrid formulations were then developed by dispersing ibuprofen-loaded Cu-MBGs within thermosensitive hydrogels based on a custom-made amphiphilic polyurethane. This procedure showed almost no effects on the gelation potential (gelation at 37 °C within 3–5 min). Cu2+ and ibuprofen were co-released over time in a sustained manner with a significantly lower burst release compared to MBG particles alone (burst release reduction approx. 85% and 65% for ibuprofen and Cu2+, respectively). Additionally, released Cu2+ species triggered polyurethane chemical degradation, thus enabling a possible tuning of gel residence time at the pathological site. The overall results suggest that hybrid injectable thermosensitive gels could be successfully designed for the simultaneous localized co-delivery of multiple therapeutics.

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Tan, Qiaoyin, Cuicui Wu, Lei Li, Weide Shao i Min Luo. "Nanomaterial-Based Prosthetic Limbs for Disability Mobility Assistance: A Review of Recent Advances". Journal of Nanomaterials 2022 (31.03.2022): 1–10. http://dx.doi.org/10.1155/2022/3425297.

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The emergence of new hybrid nanomaterial has enabled prosthetic devices to have more performance and significantly improved the quality of life of the disabled. Due to the biosensing properties of prosthetic limbs made of nanomaterials, a large number of nanocomposites have been designed, developed, and evaluated for various prosthetic limbs, such as e-skin, e-skin’s neurotactility sensing, human prosthetic interface tissue engineering, bones, and biosensors. Nano-based materials are also considered to be the new generation of scientific and technological materials for the preparation of various prosthetic devices for the disabled, which can effectively improve the sense of use of the disabled and achieve functional diversity. The study described various nanomaterials for prosthetic devices, and introduced some basic components of nanocomposites; their applications are in three areas, such as bone, skin, and nerve, and evaluated and summarized the advantages of these applications. The results show that (1) carbon-based nanomaterials as neural materials have been studied most deeply. Due to that strong stability of the carbon-based material and the simple transmission mechanism, the cost can be controlled in manufacturing the artificial limb. Materials with human-computer interaction function are the research focus in the future. (2) Skin nanomaterials are mainly composite materials, generally containing metal- and carbon-based materials. Ionic gels, ionic liquids, hydrogels, and elastomers have become the focus of attention due to the sensitivity, multimodal, and memory properties of their materials. (3) Outstanding nanomaterials for bone are fibrous materials, metallic synthetic materials, and composite materials, with extremely high hardness, weight, and toughness. Of the skeletal materials, the choice of prosthetic socket material is the most important and is typically based on fiber laminate composites. Some of these materials make sensors for durability and performance that can be used for large-scale clinical testing.

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Javed, Bilal, Xinyi Zhao, Daxiang Cui, James Curtin i Furong Tian. "Enhanced Anticancer Response of Curcumin- and Piperine-Loaded Lignin-g-p (NIPAM-co-DMAEMA) Gold Nanogels against U-251 MG Glioblastoma Multiforme". Biomedicines 9, nr 11 (21.10.2021): 1516. http://dx.doi.org/10.3390/biomedicines9111516.

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Glioblastoma multiforme (GBM) is the most aggressive and commonly diagnosed brain cancer and is highly resistant to routine chemotherapeutic drugs. The present study involves the synthesis of Lignin-g-p (NIPAM-co-DMAEMA) gold nanogel, loaded with curcumin and piperine, to treat GBM. The ongoing study has the application potential to (1) overcome the limitations of drugs biodistribution, (2) enhance the toxicity of anticancer drugs against GBM, and (3) identify the drugs uptake pathway. Atom transfer radical polymerization was used to synthesize the Lignin-g-PNIPAM network, crosslinked with the gold nanoparticles (GNPs) to self-assemble into nanogels. The size distribution and morphological analysis confirmed that the drug-loaded gold nanogels are spherical and exist in the size of 180 nm. The single and combinatorial toxicity effects of curcumin- and piperine-loaded Lignin-g-p (NIPAM-co-DMAEMA) gold nanogels were studied against U-251 MG GBM cells. A cytotoxicity analysis displayed anticancer properties. IC50 of curcumin- and piperine-loaded gold nanogels were recorded at 30 μM and 35 μM, respectively. Immunostaining and Western blot analysis confirmed the protein expression of caspase-3 and cleaved caspase-3 in cells treated with drug-loaded nanogels. Kinetic drug release revealed 86% release of hybrid curcumin–piperine from gold nanogel after 250 min at pH 4. Atomic absorption spectroscopic analysis confirmed that the drug-loaded nanogels have better internalization or association with the cancer cells than the GNPs or nano-gels alone. Morphological studies further confirmed that the curcumin and piperine nanogels penetrate the cells via endocytic pathways and induce caspase-3-related apoptosis. The experimental evidence shows the enhanced properties of combinatorial curcumin–piperine gold nanogels (IC50: 21 μM) to overcome the limitations of conventional chemotherapeutic treatments of glioma cells.

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Rozprawy doktorskie na temat "Nano-hybrid Gels"

Jon, Sun-Sho, i 鍾順雄. "Synthesis and Characterization of Sol-gel Acrylate-Nano Silica Hybrid Optical Films". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/17511960438693893544.

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碩士
國立臺北科技大學
有機高分子研究所
92
PMMA-SiO2 hybrid polymer films have been found having precise thermal stability, highly optical transparency, corrosion resistance and excellent planarization, which are promising for many applications, such as optical films, corrosion-resistant wears and others. In this study, acrylic polymer/silica hybrid films were prepared by in-situ sol-gel process combined with spin coating technique and multi-step baking process. In the preparation scheme, the colloidal silica was first reacted with a coupling agent, 3-(trimethoxysilyl)propyl methavrylate (MSMA); and then polymerized with an acrylic monomer. The effects of the reaction formulation on the properties of the prepared films were investigated, including the ratio of colloidal silica (SiO2)/MSMA, the colloidal silica content, and the acrylic content. The properties of hybrid films were analyzed by the measurements of UV, FTIR, GPC, DSC, AFM and Pencil hardness. The result reveals that the hybrid films with the ratios of MSMA to colloidal silica over 6/6 have the hardness above 7 H and show good thermal stability without glass transition temperature detected beyond 200℃. Excellent optical transparency is achieved in the visible region and excellent surface planarity is obtained for the prepared hybrid materials.

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Fang, Yen-Wen, i 方彥文. "A Study on Preparation and Characteristics of Polyimide/Titania Nano Hybrid Films by Sol-Gel Method". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/72483280723621490021.

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Juan, Chun-Chieh, i 阮俊杰. "The Preparation and Properties of Poly(carbonate)/SiO2 Hybrid Organic/Inorganic Nano-composite Materials by Sol-Gel Method". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/67036838855128599066.

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Wu, Dai-Lin, i 吳岱霖. "The Preparation and Properties of Novolac Type Phenolic/SiO2 Hybrid Organic/Inorganic Nano-Composite Materials by Sol-Gel Method". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/73169389501341790929.

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碩士
國立清華大學
化學工程學系
90
The preparation of the phenolic resin/silica hybrid organic-inorganic nanocomposite is via sol-gel process. The coupling agent was used to improve the interface between organic and inorganic phase. Effects of nanocomposite structure on the physical and chemical properties were discussed. The reaction of coupling agent and resin forms covalent bonds. The structure of the covalent bonds was identified by Fourier-transform infrared (FT-IR) spectroscope. The silica network was characterized by solid-state 29Si nuclear magnetic resonance (29Si solid-state NMR). Results revealed that Q4 (tetra-substituted siloxane bond) and T3 (tri-substituted siloxane bond) are the major microstructures. The size of silica particle in the phenolic resin was characterized by scanning electron microscope (SEM). The particle size of inorganic silica in the modified-system is less than 100 nm. The hybrid nanocomposites exhibits excellent transparence. Thermal properties and mechanical properties show significant difference between the conventional composite and nanocomposite. The modified hybrid composite exhibits promising thermal properties. The 5% weight loss temperature increased from 281℃ to 350℃. The flexural strength increased by 6~30%. The L.O.I. of the nanocomposite can reach 35 and the U.L. value is 94V-0. Hence, the materials possess excellent flame-retardant properties.

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Części książek na temat "Nano-hybrid Gels"

Na, Moon Kyong, Dong Pil Kang, Hoy Yul Park, Myeong Sang Ahn i In Hye Myung. "Properties of Nano-Hybrid Sol-Gel Materials Synthesized from Colloidal Silica-Silane Containing Epoxy Silane". W Key Engineering Materials, 2278–81. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.2278.

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Bae, Byeong-Soo. "Highly Photosensitive Sol–Gel Hybrid Nano Materials for Direct Photo-Fabrication of Micro-Optical Elements". W Hybrid Nanocomposites for Nanotechnology, 587–651. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-30428-1_13.

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Na, Moon Kyong, Hoy Yul Park, Dong Pil Kang i Myeong Sang Ahn. "Properties of Nano-Hybrid Sol-Gel Coating Films Synthesized with Colloidal Silica and Organoalkoxy Silanes". W Eco-Materials Processing and Design IX, 69–72. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-472-3.69.

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Hallan, S. S. "Biomedical Applications of Zinc Oxide Nano-Carriers: An Ingenious Tool". W ZnO and Their Hybrid Nano-Structures, 234–62. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902394-8.

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The zinc oxide-based nanoparticles have become the center of interest among the research community, especially in the field of biomedical sciences. They have unique inherent features which help with reduction in biofilm development, anti-bacterial/microbial potential, in addition to transporting active drug molecules to the target site. Further, the concept of green synthesis can also be applied in their fabrication. The effectiveness of these nanomaterials can be improved by transferring them into a gel system. This book chapter focuses on the recent advancements, technical challenges related to surface chemistry, shape and in designing these nanomaterials.

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Kalia, R. "Recent Advances and Trends in ZnO Hybrid Nanostructures". W ZnO and Their Hybrid Nano-Structures, 86–131. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902394-4.

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ZnO nanostructures are excellent candidates for use in the production of functional devices because to their low toxicity, robust thermal stability, excellent corrosion resistance, biocompatibility, high specific surface area, and high conductivity. In this chapter we have discussed the various nanostructures of ZnO and their kind, synthesis of hybrid ZnO nanostructure, modification in nanostructure of ZnO, Hybrid nanostructure of ZnO. In addition, we have discussed the various methods like Sol-gel method, Hydrothermal method and Green Synthesis method in detail for the synthesis of ZnO nanostructures. The effect of these methods on variation of nanostructures have been discussed in detail. It has been observed that because of its great sensitivity to the chemical environment, ZnO nanostructures have been extensively used in sensing applications. Also, the ZnO nano structures have been widely used in light emitting diodes and in solar cells because of its semiconducting nature. The ZnO is a n-type semiconductors and has a perfect bandgap of 3.37eV for its use in solar cell applications. Thus, this chapter provides a detailed discussion about the various nano structures of ZnO, the synthesis methods and various applications.

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"Sol-gel Preparation and Luminescence Properties of Nano-structured Hybrid Materials Incorporated with Europium Complexes". W Physics and Chemistry of Nano-structured Materials, 217–20. CRC Press, 2003. http://dx.doi.org/10.1201/9781482268157-35.

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Streszczenia konferencji na temat "Nano-hybrid Gels"

Han, Chi-Hwan, Sang-Do Han i Jihye Gwak. "Sol-gel Combustion Hybrid Method for Nano-oxide Synthesis". W 2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2007. http://dx.doi.org/10.1109/nems.2007.352000.

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Jameel, Zainab N., Adawiya J. Haider, Samar Y. Taha, Shubhra Gangopadhyay i Sangho Bok. "Evaluation of hybrid sol-gel incorporated with nanoparticles as nano paint". W TECHNOLOGIES AND MATERIALS FOR RENEWABLE ENERGY, ENVIRONMENT AND SUSTAINABILITY: TMREES. Author(s), 2016. http://dx.doi.org/10.1063/1.4959377.

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Banet, L., G. Camino, J. Castellon, H. Couderc, O. Dellea, N. Dreuilles, H. Eggenschwiler i in. "Nano-structured hybrid sheets for electrotechnical high-power insulating applications: The sol-gel route". W 2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2012). IEEE, 2012. http://dx.doi.org/10.1109/ceidp.2012.6378931.

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Ma, Liping, Shitou Wang, Yifu Long, Changqian Zhu, Hongbin Yang, Tangying Yang, Xiaochun Liu, Xiaorong Li, Baojun Bai i Wanli Kang. "Novel Environmentally Benign Hydrogel: Nano-Silica Hybrid Hydrolyzed Polyacrylamide/ Polyethyleneimine Gel System for Conformance Improvement in High Temperature High Salinity Reservoir". W Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2017. http://dx.doi.org/10.2118/188654-ms.

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