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Journal articles on the topic 'Viscous synergy'

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1

Ting, Tiew Wei, Yew Mun Hung, and Ningqun Guo. "Field-synergy analysis of viscous dissipative nanofluid flow in microchannels." International Journal of Heat and Mass Transfer 73 (June 2014): 483–91. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014.02.041.

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2

Herráez, J. V., and R. Belda. "Viscous Synergy of Pure Monoalcohol Mixtures in Water and Its Relation to Concentration." Journal of Solution Chemistry 33, no. 2 (2004): 117–29. http://dx.doi.org/10.1023/b:josl.0000030279.67143.ac.

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3

Yan, Yajing, Chongfang Song, Wuxuan Pan, Jie Wang, and Yifan Bai. "Analysis of Resistance Characteristics and Research into Resistance Reduction of a Tee Based on Field Synergy." Buildings 14, no. 5 (2024): 1271. http://dx.doi.org/10.3390/buildings14051271.

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The resistance loss and energy consumption when fluid flows through a tee in an HVAC system are severe. To improve energy efficiency and reduce carbon emissions, a novel tee with a U-shaped deflector is proposed, supported by experiments and numerical simulations. The resistance reduction mechanism of the U-shaped deflector was analyzed according to the viscous dissipation principle and the field synergy principle. The resistance reduction of the novel tee with different deflector angles and a traditional tee were compared. The results show that the resistance loss of the tee was mainly due to
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4

Craig, Michael, Jay Raval, Bruce Tai, Albert Patterson, and Wayne Hung. "Effect of Channel Roughness on Micro-Droplet Distribution in Internal Minimum Quantity Lubrication." Dynamics 2, no. 4 (2022): 336–55. http://dx.doi.org/10.3390/dynamics2040019.

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This research studied the effect of channel roughness on micro-droplet distributions in internal minimum quantity lubrication for effective machining. Mixtures of different oils and air were flown though internal channels with simulated different roughness: as fabricated, partially threaded, and fully threaded. The airborne droplets were collected, analyzed, and compared with simulated results by computational fluid dynamics. For low-viscous lubricant, the rough channel surface helped to break large droplets in the boundary layer into smaller droplets and reintroduce them into the main downstr
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Aiyer, Aditi, Simone K. Visser, Peter Bye, et al. "Effect of N-Acetylcysteine in Combination with Antibiotics on the Biofilms of Three Cystic Fibrosis Pathogens of Emerging Importance." Antibiotics 10, no. 10 (2021): 1176. http://dx.doi.org/10.3390/antibiotics10101176.

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Cystic fibrosis (CF) is a genetic disorder causing dysfunctional ion transport resulting in accumulation of viscous mucus that fosters chronic bacterial biofilm-associated infection in the airways. Achromobacter xylosoxidans and Stenotrophomonas maltophilia are increasingly prevalent CF pathogens and while Burkholderia cencocepacia is slowly decreasing; all are complicated by multidrug resistance that is enhanced by biofilm formation. This study investigates potential synergy between the antibiotics ciprofloxacin (0.5–128 µg/mL), colistin (0.5–128 µg/mL) and tobramycin (0.5–128 µg/mL) when com
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Somigliana, Alice, Leonardo Testi, Giovanni Rosotti, et al. "The Time Evolution of Md/Ṁ in Protoplanetary Disks as a Way to Disentangle between Viscosity and MHD Winds." Astrophysical Journal Letters 954, no. 1 (2023): L13. http://dx.doi.org/10.3847/2041-8213/acf048.

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Abstract As the classic viscous paradigm for protoplanetary disk accretion is challenged by the observational evidence of low turbulence, the alternative scenario of MHD disk winds is being explored as being potentially able to reproduce the same observed features traditionally explained with viscosity. Although the two models lead to different disk properties, none of them has been ruled out by observations—mainly due to instrumental limitations. In this work, we present a viable method to distinguish between the viscous and MHD framework based on the different evolution of the distribution i
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7

Roy, Mahendra Nath, and Biswajit Sinha. "Viscous synergy and isentropic compressibility of some monoalkanols and cyclic ethers in water at 298.15 K." Journal of Molecular Liquids 133, no. 1-3 (2007): 89–99. http://dx.doi.org/10.1016/j.molliq.2006.07.009.

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8

Zhang, Lufeng, Haibo Wang, Fujian Zhou, and Jianye Mou. "Numerical Simulation of Wormhole Propagation with Foamed-Viscoelastic-Surfactant Acid in Carbonate Acidizing." Processes 11, no. 6 (2023): 1839. http://dx.doi.org/10.3390/pr11061839.

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Successful matrix acidizing for extremely thick carbonate reservoirs with long horizontal well sections and strong heterogeneity requires efficient temporary plugging and diverting of acid fluid, ensuring acid fluid distribution to each production layer. Foamed-viscoelastic-surfactant (Foamed-VES) acid combines the benefits of both foam acid and viscoelastic surfactant (VES) acid, integrating foam plugging and viscous plugging. It can achieve uniform acid distribution in highly heterogeneous reservoirs. However, little research has been conducted on the wormhole propagation law of foamed-VES a
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9

Ren, Diandong, Rong Fu, Robert E. Dickinson, Lance M. Leslie, and Xingbao Wang. "Aviation Impacts on Fuel Efficiency of a Future More Viscous Atmosphere." Bulletin of the American Meteorological Society 101, no. 10 (2020): E1761—E1780. http://dx.doi.org/10.1175/bams-d-19-0239.1.

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AbstractAircraft cruising near the tropopause currently benefit from the highest thermal efficiency and the least viscous (sticky) air, within the lowest 50 km of Earth’s atmosphere. Both advantages wane in a warming climate, because atmospheric dynamic viscosity increases with temperature, in synergy with the simultaneous engine efficiency reduction. Here, skin friction drag, the dominant term for extra aviation fuel consumption in a future warming climate, is quantified by 34 climate models under a strong emissions scenario. Since 1950, the viscosity increase at cruising altitudes (∼200 hPa)
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10

Roy, Mahendra Nath, and Anuradha Sinha. "Viscous synergy and antagonism and isentropic compressibility of ternary mixtures containing 1,3-dioxolane, water and monoalkanols at 303.15K." Fluid Phase Equilibria 243, no. 1-2 (2006): 133–41. http://dx.doi.org/10.1016/j.fluid.2006.02.023.

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11

Liu, Xiaoshuang, Yazhe Wang, Xi Zhang, et al. "Crack healing behavior of 4H-SiC: Effect of dopants." Journal of Applied Physics 133, no. 14 (2023): 145704. http://dx.doi.org/10.1063/5.0140922.

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We investigate the crack-healing mechanism of 4H silicon carbide (4H-SiC) and reveal the effect of dopants on the crack-healing behavior of 4H-SiC. Vickers indentation tests and thermal annealing are utilized to generate cracks and heal cracks in 4H-SiC, respectively. High-temperature thermal annealing in the air atmosphere is found to be capable of effectively healing indentation-induced cracks and releasing indentation-induced stress in undoped 4H-SiC by the formation and viscous flow of glass phase SiO2. Nitrogen (N) doping is found to assist the atomic diffusion of 4H-SiC. The crack healin
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12

Yin, Yifei, Angui Li, Xiaoqi Wen, et al. "Resistance reduction of an elbow with a guide vane based on the field synergy principle and viscous dissipation analysis." Journal of Building Engineering 54 (August 2022): 104649. http://dx.doi.org/10.1016/j.jobe.2022.104649.

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13

Caicedo, Carolina, and Heidy Lorena Calambás Pulgarin. "Study of the Physical and Mechanical Properties of Thermoplastic Starch/Poly(Lactic Acid) Blends Modified with Acid Agents." Processes 9, no. 4 (2021): 578. http://dx.doi.org/10.3390/pr9040578.

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In this work, we present a functionalization strategy of starch-poly(lactic acid) (PLA) blends with organic acids. Lactic and acetic acid were used as acid agents, and oleic acid was also included in the previous acids, with the aim of finding a synergy that thermodynamically benefits the products and provides hydrophobicity. The ratio of starch and sorbitol was 70:30, and the added acid agent replaced 6% of the plasticizer; meanwhile, the thermoplastic starch (TPS)–PLA blend proportion was 70:30 considering the modified TPS. The mixtures were obtained in a torque rheometer at 50 rpm for 10 mi
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14

Pillai, Krishna, Ahmed H. Mekkawy, Javed Akhter, and David L. Morris. "Effect of Nebulized BromAc on Rheology of Artificial Sputum: Relevance to Muco-Obstructive Respiratory Diseases." Advances in Respiratory Medicine 91, no. 2 (2023): 146–63. http://dx.doi.org/10.3390/arm91020013.

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Respiratory diseases such as cystic fibrosis, COPD, and COVID-19 are difficult to treat owing to viscous secretions in the airways that evade mucocilliary clearance. Earlier studies have shown success with BromAc as a mucolytic agent. Hence, we tested the formulation on two gelatinous airway representative sputa models, to determine whether similar efficacy exist. Sputum lodged in an endotracheal tube was treated to aerosol N-acetylcysteine, bromelain, or their combination (BromAc). After measuring the particle size of aerosolized BromAc, the apparent viscosity was measured using a capillary t
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15

BAKAS, NIKOLAOS A. "Mechanisms underlying transient growth of planar perturbations in unbounded compressible shear flow." Journal of Fluid Mechanics 639 (October 16, 2009): 479–507. http://dx.doi.org/10.1017/s0022112009991273.

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Non-modal mechanisms underlying transient growth of propagating acoustic waves and non-propagating vorticity perturbations in an unbounded compressible shear flow are investigated, making use of closed form solutions. Propagating acoustic waves amplify mainly due to two mechanisms: growth due to advection of streamwise velocity that is typically termed as the lift-up mechanism leading for large Mach numbers to an almost linear increase in streamwise velocity with time and growth due to the downgradient irrotational component of the Reynolds stress leading to linear growth of acoustic wave ener
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16

Sun-Sheng, Yang, Punit Singh, and Hui Zhang. "Flow investigations of reverse running volute pumps with backward vanes in comparison to forward type turbine vanes." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 233, no. 1 (2018): 111–31. http://dx.doi.org/10.1177/0957650918768354.

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The use of centrifugal pumps as turbines in the recent years has come as a boon to small and micro power application given its simplicity and robustness. However, attempts are continuously being made to improve the performance by modifying the geometry, and yet to retain its simpleness. This paper proposes a new design to the impeller of an existing pump with forward-shaped vanes in an unchanged volute that is in complete contrast to the conventional backward vanes. Three methodologies are involved in the analysis starting with classical theory, experiment and simulations. The theory entails t
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17

Marushko, Yu V., T. V. Hyshchak, S. I. Yesipova, O. V. Dolynna, and T. V. Iovitsa. "Efficacy and safety of inhalation 6% N-acetylcysteine in 3% NaCl solution in clinical practice (literature review)." Modern pediatrics. Ukraine, no. 6(126) (October 29, 2022): 120–26. http://dx.doi.org/10.15574/sp.2022.126.120.

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The article summarizes the literature on the use of N-acetylcysteine and its combination with 3% NaCl solution (FLU-ACYL broncho) in clinical practice. Studies show that N-acetylcysteine is currently effective in the treatment of respiratory diseases due to its multicomponent effects on the respiratory system and the immune system. Hypertonic (3%) NaCl solution potentiates the action of N-acetylcysteine by inhalation and allows to achieve good results in the treatment of acute and chronic respiratory diseases in the optimal time. One of the well-known in Ukraine products for fast and effective
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18

Pradhan, Prasanna, and Mahendra Nath Roy. "Viscous synergy and antagonism, excess molar volume, isoentropic compressibility and excess molar refraction of ternary mixtures containing tetrahydrofuran, methanol and six membered cyclic compounds at 298.15 K." Physics and Chemistry of Liquids 49, no. 3 (2011): 286–301. http://dx.doi.org/10.1080/00319100903147886.

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19

Melnikova, I. M., and Yu L. Minernitsky. "Individually orientated choice of mucolytic drug for coughing in a child with acute respiratory viral infections." Medical Council, no. 2 (February 16, 2019): 224–30. http://dx.doi.org/10.21518/2079-701x-2019-2-224-230.

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Coughing in acute respiratory infections, regardless of the level of infection: upper or lower respiratory tract is a frequent clinical symptom in childhood. The analysis of the modern literature and the data of the authors’ own researches testify to the fact that the prescription of mucoactive therapy in a complex of therapeutic measures (etiotropic, basic therapy, bronchopulmonary drainage, etc.).) should be differentiated and determined not only by the nature and severity of coughs, separated sputum, but also by individual characteristics of the patient, the severity and course of bronchopu
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20

Shi, Bin, Guangming Zhang, Lei Zhang, Chengjun Wang, Zhonghui Li, and Fangping Chen. "Study on a Strong Polymer Gel by the Addition of Micron Graphite Oxide Powder and Its Plugging of Fracture." Gels 10, no. 5 (2024): 304. http://dx.doi.org/10.3390/gels10050304.

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It is difficult to plug the fracture water channeling of a fractured low-permeability reservoir during water flooding by using the conventional acrylamide polymer gel due to its weak mechanical properties. For this problem, micron graphite powder is added to enhance the comprehensive properties of the acrylamide polymer gel, which can improve the plugging effect of fracture water channeling. The chemical principle of this process is that the hydroxyl and carboxyl groups of the layered micron graphite powder can undergo physicochemical interactions with the amide groups of the polyacrylamide mo
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21

Roy, Mahendra Nath, Gargi Ghosh, and Lovely Sarkar. "Viscous synergic behaviour and solvent–solvent interactions occurring in liquid mixtures of aqueous alkanols with some alkanoic acids." Physics and Chemistry of Liquids 48, no. 5 (2010): 564–79. http://dx.doi.org/10.1080/00319100903161507.

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22

Miana, P., L. Grando, G. Caravello, and M. Fabris. "Microthrix parvicella foaming at the Fusina WWTP." Water Science and Technology 46, no. 1-2 (2002): 499–502. http://dx.doi.org/10.2166/wst.2002.0524.

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The Fusina WWTP receives civil and industrial wastewater from Venice and its hinterland. Its treatment capacity is in the range of 4,000–5,000 m3/h. In winter the Fusina WWTP is subjected to brown and viscous foams developed on the surface of the aeration basins and of the clarifiers. The microscopic observation of biological foams and activated sludge samples showed high concentration of the filamentous organism Microthrix parvicella. This paper investigates the growth of M. parvicella from January 1998 to January 1999 and relates it to foams developed on the aeration basins and clarifiers, t
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23

Martínez-Martí, Joana, Amparo Quiles, Gemma Moraga, Empar Llorca, and Isabel Hernando. "High Internal Phase Emulsions Preparation Using Citrus By-Products as Stabilizers." Foods 11, no. 7 (2022): 994. http://dx.doi.org/10.3390/foods11070994.

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The citrus juice industry produces about 50% of by-products. Citrus pomace (CP) contains many polysaccharides (mainly cellulose and pectin), which could act as stabilizers and emulsifiers. The aim of this work was to obtain high internal phase emulsions (HIPEs) using unmodified CP at different concentrations to valorize citrus by-products. The synergic effect of pea protein isolate (PPI) with CP to stabilize the HIPEs was also studied. HIPEs structure was analyzed using rheological and microscopy studies as well as color and physical stability of the emulsions. According to rheological data, a
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24

Begovic, Ermina, Carlo Bertorello, Raffaele Ponzini, and Francesco Salvadore. "Planing Hull Hydrodynamic Performance Prediction Using LincoSim Virtual Towing Tank." Journal of Marine Science and Engineering 12, no. 5 (2024): 794. http://dx.doi.org/10.3390/jmse12050794.

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This work shows the performance of LincoSim, a web-based virtual towing tank enabling automated and standardized calm water computational fluid dynamics (CFD) data sampling, extending previous published applications to the case of a high-speed hull. The calculations are performed for a 1:10 scale model of a 43 ft powerboat hull form in the Froude number range from 0.3 to 2.0. The counterpart physical model is the experimental fluid dynamics (EFD) campaign performed at the University of Naples Federico II, where the resistance, sinkage and trim data have been measured. The EFD/CFD data comparis
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25

Yin, Hanshuo, Yonggang Lei, Angui Li, Chongfang Song, and Baocun Du. "Field synergy principle for compressible laminar flow and the application for drag reduction in microchannel." Physics of Fluids, October 13, 2022. http://dx.doi.org/10.1063/5.0110710.

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Considering the density variation of compressible fluid, the field synergy principle for compressible laminar flow is presented based on the incompressible flow field synergy principle. The flow resistance is related to the synergy of velocity field and density logarithmic gradient field. Based on the principle of minimum mechanical energy dissipation, the compressible laminar flow field synergy equation is derived. The field synergy principle is verified by an example of the microchannel with expansion cross-section, and the structure is optimized. The results indicate that the viscous dissip
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26

Shao, Ziyi, and Junfeng Wang. "Synergy principle and its application of endwall loss analyses in the turbine stator." Physics of Fluids 35, no. 11 (2023). http://dx.doi.org/10.1063/5.0173692.

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The endwall flow significantly impacts the turbine performance behavior, and it is necessary to investigate the development of endwall secondary vortices and relevant losses. Inspired by the field synergy principle, the synergy between the velocity and the pressure gradient established by the three-dimensional mechanical energy conservation equation is innovatively applied to the endwall loss analysis in the stator of an axial-inflow turbine. In terms of the synergy equation, the loss is not only related to the viscous dissipation, but also the included angle (or the synergy angle) between the
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27

Shao, Ziyi, Haiyan Zhang, and Ruonan Wang. "Development and loss mechanism of turbine secondary flows at a low Reynolds number: A synergy analysis." Physics of Fluids 35, no. 10 (2023). http://dx.doi.org/10.1063/5.0166644.

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To further explore the development of turbine secondary flows and associated losses at a low Reynolds number, a synergy analysis was developed and implemented. Loss is defined in terms of entropy generation in the present study. Inspired by the field synergy principle in convective heat transfer, the synergy between velocity and pressure gradient was derived from the three-dimensional mechanical energy conservation in a rotating frame. The loss of mechanical energy is not only related to the viscous dissipation but also the included angle (i.e., the synergy angle) between the velocity vector a
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28

Yan, Yajing, Chongfang Song, Wuxuan Pan, Jie Wang, Fuqiang Liu, and Yifan Bai. "Resistance reduction characteristics analysis of the tee based on field synergy and viscous dissipation." Journal of Building Engineering, May 2024, 109625. http://dx.doi.org/10.1016/j.jobe.2024.109625.

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29

Scott, Thomas W., and Geoff Wild. "How to make an inclusive-fitness model." Proceedings of the Royal Society B: Biological Sciences 290, no. 2008 (2023). http://dx.doi.org/10.1098/rspb.2023.1310.

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Social behaviours are typically modelled using neighbour-modulated fitness, which focuses on individuals having their fitness altered by neighbours. However, these models are either interpreted using inclusive fitness, which focuses on individuals altering the fitness of neighbours, or not interpreted at all. This disconnect leads to interpretational mistakes and obscures the adaptive significance of behaviour. We bridge this gap by presenting a systematic methodology for constructing inclusive-fitness models. We find a behaviour’s ‘inclusive-fitness effect’ by summing primary and secondary de
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30

García, Monserrat, Werner E. van Zyl, and Henk Verweij. "Hybrid nylon-6/silica nanocomposites with improved mechanical properties." MRS Proceedings 740 (2002). http://dx.doi.org/10.1557/proc-740-i1.9.

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ABSTRACTThe study involves the development of new strategies to form technically interesting hybrid nanocomposites with improved mechanical properties. In particular, a new ‘dissolution’ preparative route was developed which incorporates silica nanoparticles (<30 nm) into a nylon-6 matrix. The procedure relies on the judicious choice of organic solvent and pH control. The synthesis involves the dissolution of nylon-6 in formic acid followed by silica particle addition (as an acidified, monodisperse sol) with stirring. Viscous solutions were prepared under cleanroom conditions and casted as
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31

Ellis, Michael D., Carolina Carmona, Justin Drogos, and Julius P. A. Dewald. "Progressive Abduction Loading Therapy with Horizontal-Plane Viscous Resistance Targeting Weakness and Flexion Synergy to Treat Upper Limb Function in Chronic Hemiparetic Stroke: A Randomized Clinical Trial." Frontiers in Neurology 9 (February 19, 2018). http://dx.doi.org/10.3389/fneur.2018.00071.

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