Academic literature on the topic 'Hard-phase synthesis'

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Journal articles on the topic "Hard-phase synthesis"

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Chen, Z. S., W. P. Yang, and C. W. Macosko. "Polyurea Synthesis and Properties as a Function of Hard-Segment Content." Rubber Chemistry and Technology 61, no. 1 (1988): 86–99. http://dx.doi.org/10.5254/1.3536179.

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Abstract High-molecular-weight linear polyureas of different hard-segment content are obtained with a two-step solution polymerization. Elimination of water, careful choice of solvent, reactant concentration, and good control of reaction temperature are essential to obtain satisfactory results. We have studied the influence of the hard-segment content on the mechanical, dynamic-mechanical, and thermal properties of these solution polymerized amine-terminated polypropylene-oxide-based thermoplastic polyureas. Two-phase morphology is predominant within the range of the hard-segment concentration
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Tsonev, Tsvetomir, Michael Herzog, and Sanchi Nenkova. "Shape memory polyurethanes based on recycled polyvinyl butyral. I. Synthesis and morphology." Open Chemistry 11, no. 12 (2013): 2058–65. http://dx.doi.org/10.2478/s11532-013-0331-3.

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AbstractShape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection spectroscopy was used to characterize the poly (vinylbutyral-urethanes). Micro-phase domain separation of hard and soft segments and phase inversion were investigated. Increasing the hard segment content, i.e., average hard segment molecular weight, leads to an increase in the deg
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Volodchenkov, A. D., Y. Kodera, and J. E. Garay. "Synthesis of strontium ferrite/iron oxide exchange coupled nano-powders with improved energy product for rare earth free permanent magnet applications." Journal of Materials Chemistry C 4, no. 24 (2016): 5593–601. http://dx.doi.org/10.1039/c6tc01300g.

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Saito, Tetsuji, and Masaki Ichihara. "Synthesis and magnetic properties of Sm5Fe17 hard magnetic phase." Scripta Materialia 57, no. 6 (2007): 457–60. http://dx.doi.org/10.1016/j.scriptamat.2007.05.037.

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Fan, Quan Run, and Feng Pan. "Technology Mapping for Heterogeneous FPGA in Different EDA Stages." Applied Mechanics and Materials 229-231 (November 2012): 1866–69. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.1866.

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In traditional EDA flow, Technology mapping is performed after logic synthesis. Besides programmable logic blocks, heterogeneous FPGAs also have some hard blocks, such as memory block and multiplier, built in it. After logic synthesis, it will be difficult for technology mapping to find sub-circuits that can be implemented in hard blocks. In this paper, a systematic technology mapping approach is proposed. In the design phase, with the support of CAD tools, a module based design approach is used to map some design block to large hard blocks. During register transfer level synthesis, some funct
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Farzaliyev, V. M., and M. N. Aliyeva. "Feature analysis of vapor-phase chromatography of high boiler organic compounds." Azerbaijan Oil Industry, no. 4 (April 15, 2020): 40–47. http://dx.doi.org/10.37474/0365-8554/2020-4-40-47.

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The paper presents the physical-chemical features of the vapor-phase chromatography method for the analysis of polar high boiler organic compounds. The application conditions of vapor-phase chromatography for the research of petrochemical synthesis products are analyzed. The mechanism of chromatographic seperation of compounds in the vapor-liquid-solid phase system is reviewed. The physical-chemical parameters of application of vapor-phase chromatography are provided. It is shown that liquid crystals can be used for the efficiency increase of the analysis of high boiler organic compounds as ha
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Nahda, Dinda P. N., Afiten R. Sanjaya, Fitria Rahmawati, et al. "Synthesis of mesoporous carbon from banana peels with silica gel 60 as the hard templates." RSC Advances 15, no. 6 (2025): 4536–45. https://doi.org/10.1039/d4ra08322a.

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Tavakolinia, Faezeh, Mohammad Yousefi, Seyyed Afghahi, Saeid Baghshahi, and Susan Samadi. "Synthesis of novel hard/soft ferrite composites particles with improved magnetic properties and exchange coupling." Processing and Application of Ceramics 12, no. 3 (2018): 248–56. http://dx.doi.org/10.2298/pac1803248t.

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SrFe12O19/Zn0.4Co0.2Ni0.4Fe2O4 hard/soft ferrite composite particles with 20, 40, 60 and 80 wt.% of soft phase were prepared by one-pot sol-gel auto-combustion and physical mixing methods. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and vibrating sample magnetometer (VSM) were used to characterize the structural and magnetic properties of the samples. XRD spectrum revealed the formation of mixed ferrite phases in the composite particles. The hysteresis loops of the samples showed the presence of exchange coupling
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Jung, Yang-Sook, Sunhee Lee, Jaehyeung Park, and Eun-Joo Shin. "One-Shot Synthesis of Thermoplastic Polyurethane Based on Bio-Polyol (Polytrimethylene Ether Glycol) and Characterization of Micro-Phase Separation." Polymers 14, no. 20 (2022): 4269. http://dx.doi.org/10.3390/polym14204269.

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In this study, a series of bio-based thermoplastic polyurethane (TPU) was synthesized via the solvent-free one-shot method using 100% bio-based polyether polyol, prepared from fermented corn, and 1,4-butanediol (BDO) as a chain extender. The average molecular weight, degree of phase separation, thermal and mechanical properties of the TPU-based aromatic (4,4-methylene diphenyl diisocyanate: MDI), and aliphatic (bis(4-isocyanatocyclohexyl) methane: H12MDI) isocyanates were investigated by gel permeation chromatography, Fourier transform infrared spectroscopy, atomic force microscopy, X-ray Diff
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Jeong, Ji Hun, Hao Xuan Ma, Doyun Kim, et al. "Chemical synthesis of Nd2Fe14B hard phase magnetic nanoparticles with an enhanced coercivity value: effect of CaH2 amount on the magnetic properties." New Journal of Chemistry 40, no. 12 (2016): 10181–86. http://dx.doi.org/10.1039/c6nj02436j.

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Nd<sub>2</sub>Fe<sub>14</sub>B hard phase magnetic nanoparticles were successfully synthesized using a chemical synthesis route followed by a reduction and diffusion process without consuming a large amount of energy.
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Dissertations / Theses on the topic "Hard-phase synthesis"

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Пітак, Ярослав Миколайович. "Вогнетривкі та жаростійкі неформовані матеріали на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2005. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40380.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.17.11 – технологія тугоплавких неметалічних матеріалів. – Національний технічний університет “Харківський політехнічний інститут”, Харків, 2005. Дисертація присвячена розробці наукової концепції створення вогнетривких та жаростійких неформованих матеріалів на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅. Досліджено субсолідусну будову чотирикомпонентних систем: M–A–S–P, C–А–S–P, Zn–Z–S–B, Zn–A–Z–S, C–M–S–P, A–Z–S–P, M–Z–S–P, C–A–S–B, C–A–Z–S, C–M–A–S, C–Sr–A–Z. Визначено співіснуючі фази в системах, виконан
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Book chapters on the topic "Hard-phase synthesis"

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Lekkerkerker, Henk N. W., Remco Tuinier, and Mark Vis. "Phase Behaviour of Colloidal Cubes Mixed with Depletants." In Colloids and the Depletion Interaction. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52131-7_10.

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AbstractIn Chaps. 8 and 9 it was shown that the phase behaviour of anisotropic hard particles is considerably richer than that of hard spheres (see Sect. 3.2). Recent breakthroughs in colloidal synthesis allow the control of particle shapes and properties with high precision. This provides us with a constantly expanding library of new anisotropic building blocks, thus opening new avenues to explore colloidal self-assembly at a higher level of complexity [1, 2]. One of these intriguing novel systems is cube-like colloids. In this chapter, a selective overview is given on the current knowledge o
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André, Étienne. "IMITATOR 3: Synthesis of Timing Parameters Beyond Decidability." In Computer Aided Verification. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81685-8_26.

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AbstractReal-time systems are notoriously hard to verify due to nondeterminism, concurrency and timing constraints. When timing constants are uncertain (in early the design phase, or due to slight variations of the timing bounds), timed model checking techniques may not be satisfactory. In contrast, parametric timed model checking synthesizes timing values ensuring correctness. takes as input an extension of parametric timed automata (PTAs), a powerful formalism to formally verify critical real-time systems. extends PTAs with multi-rate clocks, global rational-valued variables and a set of add
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Lekkerkerker, Henk N. W., Remco Tuinier, and Mark Vis. "Phase Behaviour of Colloidal Rods Mixed with Depletants." In Colloids and the Depletion Interaction. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-52131-7_8.

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AbstractSo far, we have considered the phase behaviour of colloidal spheres mixed with depletants. In Chap. 3, we considered the simplest type of depletant, the penetrable hard sphere (PHS). We then extended this treatment to ideal and excluded volume polymers in Chap. 4; and in Chap. 6, we considered small colloidal spheres (including micelles). Colloidal rods as depletants were addressed in Chap. 7; however, Chap. 7 only considered dilute dispersions of rods, in which the rods assume all configurations and are hence isotropic. In this chapter, we consider the phase behaviour of mixtures of c
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Bunker, Bruce C., and William H. Casey. "Bio-inspired Synthesis of Oxide Nanostructures." In The Aqueous Chemistry of Oxides. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199384259.003.0015.

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Nature is capable of building magnificently intricate and detailed structures out of otherwise boring materials such as calcium carbonate and silica. Anyone who has taken their children to see dinosaurs at a Natural History museum or visited natural wonders such as the Petrified Forest in Arizona are familiar with the natural process called fossilization by which the tissues of dead organisms are eventually replicated by objects of stone. Most living organisms (including humans) are critically dependent on more deliberate and controlled biomineralization phenomena that lead to the production o
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Kouwenhoven, Jonas, Lucas Lageweg, and Benno Kruit. "Constrained LLM-Based Query Generation for Question Answering on Official Statistics." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2024. http://dx.doi.org/10.3233/faia241052.

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This research explores the development of a knowledge graph statistical question answering system for Statistics Netherlands. Aimed at efficiently retrieving single statistical values from their extensive database, which encompasses over a billion values across more than 4,000 tables, we propose a comprehensive three-component framework consisting of: (1) a data augmentation method to generate synthetic data, (2) an entity retrieval system that leverages various encoder networks along with different hard negative mining techniques for the effective retrieval of tables, measures, and dimensions
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Grubov, Volodimur, Igor Khraban, and Dymytrii Grytsyshen. "THE SYRIAN KNOT IN THE “TWILIGHT” OF THE POLITICS OF MIDDLE EASTERN PLAYERS." In Innovations in science: current research and advanced technologies. Publishing House “Baltija Publishing”, 2025. https://doi.org/10.30525/978-9934-26-531-0-21.

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In the Middle Eastern geostrategic complex Syria [the Syrian Arab Republic] occupies a special place. The first state formations on the territory of modern Syria dates back to the 2nd millennium BC. Assyria, the Hittite and Babylonian kingdoms, the era of Alexander the Great, the times as part of the Roman and Ottoman empires left a significant cultural and historical mark on the Syrians in the world’s cultural heritage, and the large Syrian ethnic community is an example of peaceful coexistence. However, as history shows, the greatest dangers came to Syria from outside. Throughout the 20th ce
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Conference papers on the topic "Hard-phase synthesis"

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Souza, V. A. D., and A. Neville. "Corrosion Mechanisms and Electrochemical Behaviour of Thermal Spray Coatings (WC-Cr-Ni and WCCrC)." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02180.

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Abstract In this experimental study the corrosion characteristics (rates and mechanisms) of two thermally-sprayed cermet coatings have been examined in a static saline environment (synthetic seawater). The coatings have complex microstructures where the ceramic hard-phase constituents are embedded in a metallic matrix. Their electrochemical response during accelerated corrosion DC polarisation tests reflects this complexity. The test protocol has enabled the mechanisms of corrosion occurring on the WC/CrC cermet and the WC-Cr-Ni cermet to be compared and contrasted. A ‘critical’ temperature ha
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Tjitra Salim, N., M. Yamada, H. Nakano, H. Isago, K. Shima, and M. Fukumoto. "The Synthesis of Titanium Dioxide Powders for Cold Spray." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p1121.

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Abstract Titanium dioxide (TiO2) is a unique material that can be used as an excellent photocatalyst, hence it will be very useful to solve the current world pollution problem. For photocatalytic application, the cold spray process, which uses supersonic high velocity technique at moderate temperature is considered to be a suitable technique as it will inhibit the phase transformation of TiO2. It is known that obtaining a thick coating of TiO2 is difficult as it is a hard ceramic material. However, we have successfully synthesised TiO2 powders that can be cold sprayed. Our synthesis technique
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Deuerler, F., H. Gruner, M. Pohl, and L. Tikana. "Auswirkungen der Abscheidebedingungen auf das Kavitationsverhalten von Plasmajet-CVD-Diamantschichten (Effects of the Conditions of Diamond Synthesis on the Cavitation Behaviour of Plasma Jet CVD Diamond Coatings)." In ITSC 1999, edited by E. Lugscheider and P. A. Kammer. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 1999. http://dx.doi.org/10.31399/asm.cp.itsc1999p0163.

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Abstract Diamond films have been deposited on WC - 6% Co hard metal tools by the DC plasma jet CVD synthesis. The parameters of the process (gas composition, temperature of the gas phase and the substrate, process pressure) as well as of the substrate surface (material, pretreatment) are related to the diamond film growth. For machining abrasive materials the hard and wear resistant diamond coatings must adhere good to the substrate. The wear behaviour of thin diamond films on hard metals under cavitation treatment has been examined. Thus the conditions of diamond synthesis have been varied es
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Abadias, G., I. A. Saladukhin, V. V. Uglov, and S. V. Zlotski. "Thermal stability of TiZrAlN films deposited by a reactive magnetron sputtering method." In 13th International Conference on Plasma Surface Engineering September 10 - 14, 2012, in Garmisch-Partenkirchen, Germany. Linköping University Electronic Press, 2013. http://dx.doi.org/10.3384/wcc2.424-426.

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Quaternary TiZrAlN films are: • perspective for both oxidation and wear resistance applications and expectant substitution for TiN, (Ti,Al)N and (Ti,Zr)N hard films; • capable to possess by the unique properties due to possibility of nanocomposite structure formation during their synthesis. The aim of the present work is to study the thermal stability, under vacuum and air annealing, of quaternary transition metal nitride films, namely (Ti,Zr)1-xAlxN, with emphasis on the role of Al content on the structure and phase formation.
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Bach, Fr W., K. Möhwald, and B. Drößler. "Development of a Technique for Hard Coating of Component Parts by Synthesis of Silicon Carbide in Thermal Spray Processes." In ITSC2005, edited by E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2005. http://dx.doi.org/10.31399/asm.cp.itsc2005p1099.

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Abstract The Goal of this research project is the development of a thermal spray technique for production of layers with high SiC content. Due to its physicochemical characteristics, silicon carbide (SiC) is a material which is particularly well suited as a component of wear-protection layers [1]. In thermal spray, however, silicon carbide can not be processed easily, since it disintegrates and sublimates into the gaseous phase at the prevailing high process temperatures under atmospheric conditions. In this project, SiC-phases of the spray layers are to be in-situ synthesized from silicon and
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Bach, Fr W., L. Engl, and L. A. Josefiak. "Development of Light Metal Matrix Composite Coatings Using High Velocity Thermal Spray Processes." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p0769.

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Abstract In this paper the development of thermal sprayed, hard phase reinforced aluminum based layers, in particular for coating light metal substrates is described. The aim of the project was to obtain wear resistant coatings for applications on light metal surfaces combined with other advantageous characteristics, especially good thermal conductivity. One possible application for these coatings can be seen in automotive light weight constructions as wear protection for brake discs or drums. Flame shock spraying as well as high velocity oxyfuel flame spraying (HVOF) were used as coating proc
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Mazurek, Grzegorz. "The Viscoelastic Characteristics of the Asphalt Concrete Modified with Different Synthetic Waxes Using a Modified Huet- Sayegh Model." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.141.

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The article presents the results of dynamic modulus tests carried on the asphalt concrete (AC16W). The sinusoidal load was applied to the samples in accordance with DTC-CY method. The neat bituminous binder (penetration grade 35/50) was modified by means two synthetic waxes, coming from the Fischer-Tropsch raction, with various molecular weights and softening point temperature results (hard and softer). The relaxation phenomenon in terms of changes in complex modulus and phase angle was evaluated using the modified Huet-Sayegh (2S2P1D). Estimated model parameters pointed out that the addition
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Chikhradze, Nikoloz, Nikoloz Jalabadze, Mikheil Chikhradze, Davit Tsverava, and George Janikashvili. "SHOCK-WAVE SYNTHESES OF HIGH ENTROPY ALLOYS IN Fe-W-Al-Ti-Ni-B-C SYSTEM." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/6.1/s24.10.

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High-Entropy Alloys (HEAs) have higher mixing entropy than the conventional alloys and intermetallic compounds and form the stabile solid solutions with disordered structure. They exhibit unique and special properties, in particular high hardness, wearresistance, significantly high strength, structural stability, good corrosion, and oxidation-resistance. HEAs �exotic�, core effects are followings: high configurational entropy; sluggish diffusion; lattice distortion and cocktail effect. At the current stage, the volume of investigations towards high entropy materials extended from single-phase
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Zhong, Hanyi, Xiangzheng Kong, Zhengsong Qiu, Weian Huang, Xianbin Zhang, and Chong Zhao. "Effect of Nano Carbon Spheres on the Properties of Oil-Based Drilling Fluids under High Temperature Conditions." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21404-ms.

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Abstract Owing to superior temperature stability in comparison with water-based drilling fluids, oil or synthetic-based drilling fluids are generally preferred for high temperature and high pressure (HTHP) formations. However, the thermal degradation of emulsifiers and polymeric components under HTHP conditions that results in loss of rheological and filtration control, barite sag or even fluid phase separation also occurs. It is a challenge to sustain these properties stable under such harsh condition. Since nanoparticles have potential to provide better thermal stability, improved filtration
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Sandri, Monica, Michele Iafisco, Silvia Panseri, Elisa Savini, and Anna Tampieri. "Fully Biodegradable Magnetic Micro-Nanoparticles: A New Platform for Tissue Regeneration and Theranostic." In ASME 2013 2nd Global Congress on NanoEngineering for Medicine and Biology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/nemb2013-93223.

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Nowadays, magnetic materials are receiving special attention due to their potential applications in different fields and in particular in medicine. Magnetic micro-nano-particles have been progressively employed as support materials for enzyme immobilization, and have been used as drug-delivery vehicles, contrast agents for magnetic resonance imaging as well as heat mediators for hyperthermia-based anti-cancer treatments and many other exciting biomedical applications. Magnetic materials have also attracted a big interest in the field of bone tissue regeneration because it has been demonstrated
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Reports on the topic "Hard-phase synthesis"

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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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