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2019-6-20 · The main purpose of this study is to reduce the negative effect of cross-flow on heat transfer by extending jet holes toward the target surface with nozzles. This study has been conducted under turbulent flow condition (15,000 ≤ Re ≤ 45,000).
Get Price2013-9-16 · Double helix geometry within the nozzle reduced the gas column's stability by generating a fast moving wall of gas around a slow moving center. A pierced internal plate initially increased the gas velocity, however, the nozzle was unable to maintain the velocity and the change produced gas columns of similar stability to a standard nozzle.
Get Price2017-5-22 · double nozzle-orifice bridge which: - further reduced null changes. - Wolpin: isolated the torque motor from the fluid, i.e. a 'dry' torque motor which : - removed the inherent reliability problems of the 'wet' torque motor, due to magnetic particle contamination. Fig 4. Mechanical Feedback Two-stage Servovalve (1955) 1957
Get Price2021-1-30 · Based on the theoretical calculations made in the heating system design, literature studies [14,15,16,17] have been examined in detail to determine the nozzle diameter and size, and in order to determine the nozzle size that can provide a laminar flow after the combination of heated air and erosive particles in the nozzle; a design with a nozzle diameter of 5 mm and a length of …
Get PriceThe initiation of a jet within MEW depends on the mass flow rate to the nozzle, applied voltage, and collector distance, and can take in the order of several or even tens of minutes, depending on the flow rate and/or melt viscosity. The molten jet is stabilized with the voltage and the whipping that is associated with electrospinning does not occur.
Get Price2020-8-26 · Then, when the hydrogel is squeezed out of the nozzle and the shear stress is dissipated, most of the viscosity can be recovered in a short time, and this is conducive to the formation and mechanical strength of the printed construct . Therefore, it is very important to evaluate the rheological properties of the CNC/GEL hydrogels for 3D printing.
Get Price2021-8-2 · Air-jet. Air-jet weaving is considered the most efficient and productive way of inserting the weft across the shed, for the production of light- to medium-weight fabrics, terry towels, furnishing fabrics, and denims, and so on. Compared with the rapier and projectile methods of weft insertion, the mass of the insertion medium in air-jet weaving is very small.
Get Price2016-7-13 · Aircraft Jet Fuels and Kerosene Type Fuels Aircraft jet fuels and kerosene type fuels may be used as a diesel engine fuel provided they meet acceptable limits. Adequate viscosity, particularly with kerosene type fuels is a major concern. For Cat engine fuel systems, a minimum viscosity of 1.4 cSt at 38°C (100°F) is
Get Price2008-2-6 · However, the effects of these biomanufacturing processes on cells have not been fully studied. This paper examines the effect of solid freeform fabrication–based direct cell writing process, focusing on dispensing pressure and nozzle size, on the viability and functional behavior of HepG2 cells encapsulated within alginate.
Get Price2012-5-23 · The double-edge effect of second-phase particles on the recrystallization behaviour and associated mechanical properties of metallic materials Progress in Materials Science, Vol. 92 Isothermal sections of the Co–Ni–Ti system at 950 and 1 000 °C
Get PriceMeechaisue and coworkers [] examined the effect of different concentrations of poly(DTE carbonate) on electrospun nanofiber formation.At a concentration of 5% W/V (2.5 cp), mainly droplets were formed since the viscoelastic forces at this concentration were not sufficient to overcome the repulsive forces of charge, resulting in the fiber jet fragmenting into droplets.
Get PriceA double arc is a condition which allows the nozzle to stay in the plasma circuit. As described above, the nozzle should only be in the circuit during the pilot arc phase. If left in the circuit, the nozzle will carry cutting amperage which will destroy it. Double …
Get Price2018-12-4 · Electrospinning has attracted a worldwide interest as a technique for the production of nanofibrous membranes with diameter ranging 2 nm to several microscales using natural and synthetic polymers. The electrospun nanofibres have advantages such as high surface area, easy surface modification, functionalization of polymeric chains, inexpensive and tunable thermo-mechanical properties…
Get PriceGiuseppe et al. studied the effect of single and double liquid jet grouting on the mechanical properties of sand and cohesive soil through two field tests. Zhang et al. [ 18 ], through field measurement and numerical simulation, analyzed the influence of grouting treatment on reducing tunnel deformation, to solve the problem of large ...
Get PriceGiuseppe et al. studied the effect of single and double liquid jet grouting on the mechanical properties of sand and cohesive soil through two field tests. Zhang et al. [ 18 ], through field measurement and numerical simulation, analyzed the influence of grouting treatment on reducing tunnel deformation, to solve the problem of large ...
Get PriceDissertations & Theses from 2019. Krishnan, Ankita (2019) Understanding Autism Spectrum Disorder Through a Cultural Lens: Perspectives, Stigma, and Cultural Values among Asians . Suzuki, Takakuni (2019) Quantifying the Relations among Neurophysiological Responses, Dimensional Psychopathology, and Personality Traits . Dissertations & Theses from 2018. Abdel-Salam, …
Get Price2017-3-28 · characteristics of the structure considering the Elephant Foot Bulge (EFB), the effect of the uplifting tank and the plastic deformation of the bottom plate at the shell-to-bottom juncture in the event of earthquake, the design spectrum for sloshing in tanks, the design pressure for silos,
Get PriceMeechaisue and coworkers [] examined the effect of different concentrations of poly(DTE carbonate) on electrospun nanofiber formation.At a concentration of 5% W/V (2.5 cp), mainly droplets were formed since the viscoelastic forces at this concentration were not sufficient to overcome the repulsive forces of charge, resulting in the fiber jet fragmenting into droplets.
Get Price2018-4-12 · The yield stress of the weld metal is also raised due to the quenching effect. The metal alloys constituting the electrode contribute to the increase in yield stress. These alloys penetrate the parent metal influencing its mechanical properties. Due to the lower yield stress and higher transverse contraction in the parent metal, it
Get Price2014-4-15 · A syringe pump is connected to a glass capillary to deliver fluidic ink. A voltage is applied between the nozzle and substrate to drive the ink onto the target substrate. The nozzle, having an inner diameter of a few micrometers, can be fabricated by a standard micropipette puller. The nozzle is then metal coated to make it electrically conductive.
Get Price2007-6-9 · PUMP SELECTION, SIZING AND INTERPRETATION OF PERFORMANCE CURVES 4 • 5 4.3 IMPELLER DIAMETER SELECTION Quite often, the operating point is located between two curves on the performance chart.
Get Price2019-6-25 · Plasma cutting is an effective way to cut thin and thick materials. Hand torches can usually cut up to 38 mm thick steel sheet, stronger computer controlled torches can cut up to 150 mm thick steel sheet. Since plasma cutters produce a very hot and very localised “cone” for cutting, they are very useful for cutting and welding sheets in curved or angled shapes.
Get Price2012-3-9 · The lubricant-like properties of WD-40 come not from the substance itself, but from dissolving components. And the effect doesn't last. WD-40 …
Get PricePoly(2-alkyl-2-oxazoline)s (PAOXAs) have been rapidly emerging as starting materials in the design of tissue engineering supports and for the generation of platforms for cell cultures, especially in the form of hydrogels. Thanks to their biocompatibility, …
Get Price2018-4-6 · The worldwide demand for the organ replacement or tissue regeneration is increasing steadily. The advancements in tissue engineering and regenerative medicine have made it possible to regenerate such damaged organs or tissues into functional organ or tissue with the help of 3D bioprinting. The main component of the 3D bioprinting is the bioink, which is crucial for the …
Get PriceAbhari R, Mouthuy PA, Zargar N, Brown C, Carr A. Effect of annealing on the mechanical properties and the degradation of electrospun polydioxanone filaments. J Mech Behav Biomed Mater. 2017;67:127–134. 40. Schneider C, Gordon ON, Edwards RL, Luis PB. Degradation of curcumin: from mechanism to biological implications.
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