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2020-4-22 · AN ANALYSIS OF THE AIR-JET YARN-TEXTURING PROCESS PART VI: THE MECHANISM OF LOOP FORMATION . M. ACAR, R. K. TURTON, and G. R. WRAY . Loughborough University, UK . ABSTRACT . After a brief summary of the findings and conclusions of the previously reported investigations on the air-jet texturing process, a mechanism of loop formation …
Get PriceThe factors affecting loop formation are analysed in the light of the mechanism described. This mechanism of loop formation is claimed to be valid for all types of texturing nozzle because the underlying requirement to create a supersonic, turbulent, and non-uniform flow is common to all satisfactory air-jet texturing …
Get Price2018-6-16 · the air-jet texturing process, a mechanism of loop formation is postuliited. The factors affecting loop formation are analysed in the light of the mechanism described. This mechanism of loop formalion Is claimed to be valid for all types of texturing nozzle because the underlying requirement to create a
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Get Price2018-6-16 · After a brief summary of the findings and conclusions of the previously reported investigations on the air-jet texturing process, a mechanism of loop formation is postulated. The factors affecting loop formation are analysed in the light of the mechanism described. This mechanism of loop formation is claimed to be valid for all types of texturing …
Get PriceAir-jet texturing of these yarns is performed without any visible loop formation in order to minimize the mechanical loss, and an improvement in the adhesion to rubber of conventional PET yarns is ...
Get Price2006-2-1 · A comprehensive review of the roles played by the airflow, wetting and spin finish on the air-jet texturing process is given. The results of an experimental investigation of the air-jet texturing process using residual spin finish, yarn-to-yarn static and kinetic friction, filament strength, filament diameter, and on-line tension …
Get PriceAfter a brief summary of the findings and conclusions of the previously reported investigations on the air-jet texturing process, a mechanism of loop formation …
Get PriceThis paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles.
Get Price2013-8-26 · Formation of RNA-DNA hybrid, or R-loop, was studied in vitro by transcribing an AGGAG repeat with T7 RNA polymerase. When ribonuclease T1 was present, R-loop formation in cis was diminished, indicating that the transcript was separated from the template and reassociated with it. The transcript was found to …
Get PriceThis reaction suggests a new mechanism for the formation of ammonium sulfate in the atmosphere, especially when the concentration of NH3 is high (e.g., ∼10 μg m(-3)) in the air. Contrary to the water monomer and dimer, the water trimer enables near-barrierless proton transfer via the formation of a unique loop structure …
Get Price2014-4-17 · R-loop formation is a normal and important feature of the FMR1 promoter, but expansion of the CGG repeats, and the associated increase in transcription, results in increased formation of longer R-loops that are more prone to folding into complex secondary structures, which could trigger instability and …
Get Price2010-1-1 · Air-jet texturing provides a means of creating texture in such materials. Further, it is a useful means of producing a yarn structure near to that associated with staple yarns. This is an important concession to the tastes of the ultimate consumer. 63 Air-jet texturing was introduced by DuPont in the 1950s, and then …
Get Price2001-11-1 · Fiber formation occurs in a dry jet-wet spinning process, with several physical factors (e.g. nozzle and air-gap dimensions, draw-down ratio, take-up speed) and dope characteristics (cellulose DP and concentration, temperature, modifiers) influencing the shaping process and the final fibers properties.
Get Price2016-8-10 · a potential positive feedback mechanism. The oceans are an important sink for CO 2 through absorption of the gas into the water surface. As CO 2 increases, it increases the warming potential of the atmosphere. If air temperatures warm, it should warm the oceans. The ability of the ocean to remove CO 2 from the
Get Price2018-7-10 · As the primary source of “detergent” OH radicals, nitrous acid (HONO) plays an essential role in the chemistry of the atmosphere. Despite extensive studies, the source of HONO is still elusive. Although recent studies have shown the importance of reactive nitrogen compounds during aerosol formation, mechanistic …
Get Price2020-12-17 · Morel F. The loop of Henle, a turning-point in the history of kidney physiology. Nephrol Dial Transplant. 1999;14(10):2510-2515. Greger R. Ion transport mechanisms in thick ascending limb of Henle’s loop of mammalian nephron. Physiol Rev. 1985;65(3):760-797. https://pubmed.ncbi.nlm.nih.gov/2409564/
Get Price2010-7-1 · (2) Ligament formation mechanism. There have been reports that observed ligament formation in slow liquid jets (Sallam et al., 2002, Marmottant and Villermaux, 2004). Especially for high We and small-scale sprays, data are almost unavailable. (3) Droplet formation mechanism from a ligament. The present status …
Get Price2016-4-1 · phenomena such as texturing, nucleation, grain growth, phase transformation, grain boundary migration, segregation, diffusion, and densification [1,2]. Although electromagnetic (EM) fields are currently being utilized in a variety of materials processing approaches, in many cases a
Get PriceAir-jet texturing has become increasingly important because of its capacity to process CF yarns of any polymer type. For example, cellulosic rayon, which is not a thermoplastic, can be air-jet texturised. A typical air-jet textured polyester/viscose yarn blend would comprise a FOY polyester of 80/75 tex (72/75 denier) and a …
Get PriceThe jet stream flows high overhead and causes changes in the wind and pressure at that level. This affects things nearer the surface, such as areas of high and low pressure, and therefore helps shape the weather we see. Sometimes, like in a fast-moving river, the jet …
Get Price2016-2-28 · Effect of surface texturing on hydrodynamic performance of journal bearings: Author (s): Shahab Hamdavi, H. H. Ya and TVVLN Rao: Abstract: The request to use hydrodynamic journal bearings in different industries consisting high speed and high load are commonly demanded. The necessary of improving its …
Get Price2018-3-21 · The fields of layered material research, such as transition-metal dichalcogenides (TMDs), have demonstrated that the optical, electrical and mechanical properties strongly depend on the layer number N.Thus, efficient and accurate determination of N is the most crucial step before the associated device …
Get PriceA comparison of the liquid jet energy and acoustic energy reveals that the acoustic transient, rather than the liquid jet, plays a vital role in the damping mechanism during the second collapse for γ=0.75 (γ=L/R max, where R max being the maximum bubble radius and L denoting the distance of the cavity inception from the …
Get PriceYarn Texturising Technology: Air-jet Texturing and Yarns. Cambridge, England, Woodhead Publishing Limited (CRC Press) 7. Shaikh T. N., & Bhattacharya, S. S., (2011): Deriving an Empirical Formula to Determine the Optimum Level of False-Twist in Mechanically-Crimped Textured Polyester Yarn, Textile Research J., Vol. 81, 19, …
Get Price2011-2-24 · Abstract: A spliced fiber tow (40) having a uniform density along its entire length is provided. The spliced fiber tow is manufactured by rarefying the ends (22, 32) of the two fiber tow segments to be joined, aligning the rarefied regions (26, 36) and then applying pressurized gas to entangle the filaments in the rarefied …
Get Price2019-4-15 · Due to the direct contact of air, the jet is sensitive to the parameters of the local environment such as relative humidity (RH). In a RH controlled chamber, the electron density of a helium CAPJ is …
Get Price2017-6-11 · Air jet method False twist method •This process has been successful on a wide variety of fibers. •A jet of high velocity air is directed at a moving multifilament yarn which separates the fibers, …
Get Price1 Introduction. Tribology is the study of friction, wear, and the lubrication of interacting surfaces. As one of the critical tribological domains and a persistent phenomenon regarding the deformation, damage and/or removal of material at contact surfaces, wear greatly affects the lifetime of mechanical components from …
Get Price2014-3-18 · Air texturing is an extremely versatile mechanical yarn bulking process that improves the handle and tactile properties of continuous multifilament yarns. A further objective of the research work was to develop novel structures that will have good surface properties with minimal compromise in the axial strength.
Get PriceProgress has been thwarted, though, because the physical mechanism behind the imaging difficulties in such an environment is still ambiguous. This study clarifies the physics by simulating electric field screening based on the formation of electric double layers at the solid-liquid interfaces of the metal tip and sample.
Get Price2020-10-20 · 1) Forced fluid convection: Using air can cool up to 10 W/cm 2; this can be increased by using liquid such as water or glycol. Example: Aluminum heat sink and fan or pin finned heat exchanger with 50/50 water and glycol. 2) Jet-impingement cooling: A coolant fluid impinged perpendicular to the heat source at …
Get PriceRecent topics of interest include micro-texturing of surfaces with communicating and non-communicating air gaps, droplet impingement and evaporation dynamics on nonwetting surfaces, heat transfer studies in boiling, and scale formation during bubble evolution. Multidisciplinary and Multiscale Design and Device (M2D2) …
Get Price2011-2-24 · Abstract: A spliced fiber tow (40) having a uniform density along its entire length is provided. The spliced fiber tow is manufactured by rarefying the ends (22, 32) of the two fiber tow segments to be joined, aligning the rarefied regions (26, 36) and then applying pressurized gas to entangle the filaments in the rarefied …
Get PriceTexturing and structuring that result in the formation of discrete craters on the machined surfaces 7. Scribing silicon transistor wafers with a repetitively Q-switched Nd:YAG laser of peak power 300 W at a rate of 400 pulses per second and duration of 300 ns at a rate of 15 m/min 8.
Get Price2014-3-18 · Air texturing is an extremely versatile mechanical yarn bulking process that improves the handle and tactile properties of continuous multifilament yarns. A further objective of the research work was to develop novel structures that will have good surface properties with minimal compromise in the axial strength.
Get Price2018-5-31 · Two-phase cooling has become a promising method for improving the sustainability and efficiency of high energy-density and power-density devices. Fundamentally, however, two-phase thermal ...
Get PriceA system for supporting the urethra using an introducer needle, the ends of which are flattened and which have openings therethrough, a handle having a latch mechanism which engages the opening in the flattened portion of the first end of the introducer needle, an implant, and a connector joining the end of the implant to the flattened …
Get Price2017-6-1 · Modelling of the solar /stellar wind two-jet structure induced by azimuthal stellar magnetic field. NASA Astrophysics Data System (ADS) Golikov, Evgeniy; Belov, Nickolai; Alexashov, Dmitry; Izmodenov, Vladislav. 2016-07-01. Opher et al. (2015), Drake et al. (2015) have shown that the heliospheric magnetic field results in formation of two-jet …
Get PriceProfile Summary. Professor Saulius Juodkazis received his doctorate in experimental physics and material science jointly from Vilnius University (Lithuania) and Lyon-I University (France) in '97. From then on, he held previous faculty positions at the University of Tokushima (lecturer and assistant professor) and Hokkaido …
Get Price2019-8-8 · An arbitrary square integrable real-valued function (or, equivalently, the associated Hardy function) can be conveniently analyzed into a suitable family of square integrable wavelets of constant shape, (i.e. obtained by shifts and dilations from any one of them.)
Get PriceThis EHD effect that prevents Plateau–Rayleigh instabilities allows the nozzle flow rate to be substantially reduced for MEW. [5, 13] Additionally, the comparable high viscosity and low conductivity of melt fluids support the control and stability of the jet.[5, 13-15] This in combination with the controllable collector plate, allows the defined deposition of the jet…
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Get Price3. Engine Systems, Aftertreatment, Fuels, Lubricants, and Materials. INTRODUCTION. Heavy-duty truck engines, emissions control technology, and fuels are central to all aspects of the 21st Century Truck Partnership…
Get Price2013-1-27 · The extruded BCF product, containing theproper number of filaments for the desired yarndenier, is wound directly onto take-up packages.Additional processing may include air entangling ortwisting and heat-setting.Air-entangled yarns are yarn ends that are passedthrough an air jet …
Get PriceThe Journal of Materials Processing Technology Journal Impact IF 2020-2021 is 4.669. More IF Analysis, Trend, Ranking & Prediction.
Get PriceA process is disclosed for preparing slubby strands in which a textile strand is passed either over a surface or through a slubbing tool. The surface, if employed, may include a plurality of fluid passages positioned therein. As the strand passes over the surface or through the slubbing tool, high pressure fluid is introduced onto the …
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Get PriceThe new scope, drafted by Editor-in-Chief Professor Mark Allen, and approved by the Editorial Board, is as follows: Journal of Micromechanics and Microengineering covers all aspects of microelectromechanical structures, devices, and systems, as well as micromechanics and micromechatronics. The journal focuses on original …
Get Price2019-8-8 · An arbitrary square integrable real-valued function (or, equivalently, the associated Hardy function) can be conveniently analyzed into a suitable family of square integrable wavelets of constant shape, (i.e. obtained by shifts and dilations from any one of them.)
Get PriceThe vast scope of filament yarn types, classifications, and end uses are discussed in this module. Special attention is paid to production steps and the various ways to texture filament yarns. Composite yarn types are discussed in addition to how the
Get PriceUS5557039A US08/252,754 US25275494A US5557039A US 5557039 A US5557039 A US 5557039A US 25275494 A US25275494 A US 25275494A US 5557039 A US5557039 A US 5557039A Authority US United States Prior art keywords pad fiber fibers wear holding Prior art date 1994-06-02 Legal status …
Get Price2021-8-14 · A rotary reduction of fine wires/tubes of a wide range of diameters using a pair of concave rolls. Takashi Kuboki, Shohei Kajikawa M. Kiuchi (1) STC F, 65/1/2016, P.277. Keywords: Metal forming, Cold forming, Reduction of …
Get Price2020-11-19 · Oil/water mixtures are a potentially major source of environmental pollution if efficient separation technology is not employed during processing. A large volume of oil/water mixtures is produced via many manufacturing operations in food, petrochemical, mining, and metal industries and can be exposed to water sources …
Get Price2020-2-14 · A variety containing only 0.7C-13Cr wt% martensitic steel (13Cr-SS, Table 8) avoids the eutectic carbides and maintains the corrosion resistance. Steel ES1 is a further development based on a combination of carbon and nitrogen, and with an even greater capacity to resist corrosion, partly because of the alloying …
Get Price2021-4-9 · 2.1 Machine learning models. Within the field of machine learning, there is a wide range of models [109-111], with the most prominent briefly discussed here.An artificial neural network (ANN) is a network of connected units called artificial neurons, which are loosely inspired by the neurons in biological intelligence.
Get PriceThe continuous mass production of micro cups requires a forming tool that can both cut and draw a foil. In a first step, the tool cuts the foil to a circular blank and in the second step the circular blank is deep drawn to a micro cup [].The tool is built into a highly dynamic micro forming press [].This press with the integrated tool can …
Get Price2021-7-7 · Letter T, English to English Textile Dictionary, Textile Dictionary Letter T, dictionary of textiles, T Tackspun Fabric: A material made from a polymer film with a backing substrate. The …
Get Price2021-8-11 · Efforts have been made to improve the dyeability of polyester, to produce CFDP by making certain change in melt spinning, drawing and heat setting operations. Air texturing and filament mixing have also been used to produce a whole variety of products. But the most importance technique at hand is the draw texturing …
Get Price2020-5-15 · preventing the formation of bridges in large containers B65D 88/64) M B65G 69/10 · Obtaining an average product from stored bulk material (for measuring or testing G01) M B65G 69/22 · Horizontal loading or unloading platforms (pile tables B65H; as road or railway equipment E01F 1/00as road or railway equipment B61B …
Get PriceThriving artificial underwater drag-reduction materials inspired from aquatic animals: progresses and challenges. Guizhong Tian, Dongliang Fan, Xiaoming Feng and Honggen Zhou * College of Mechanical …
Get Price2012-9-1 · The sixth KER (KER n°6) is the Ink Jet Printing reel-to-reel pilot plant. Continuous production of thin films from chemical solutions has been materialized in a reel-to-reel pilot plant including ink jet printing as deposition method. The seventh KER (KER n°7) is the Advanced Magnetoscan system for quality control of coated …
Get Price2021-8-10 · A human-robot collaborative assembly system is developed with a novel and comprehensive structure, and a case study is presented to validate the proposed framework. A framework for the automated design and modelling of soft robotic systems. Gundula Runge, Annika Raatz H.K. Tönshoff (1) STC A, 66/1/2017, P.9.
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Get PriceThese peculiarities of FBS may the volume V of host atoms tend to cluster in compressed result in a rich variety of strain, charge and spin structures regions of the lattice [35]. Such Cottrell atmospheres of coexisting with the superconducting state, which can affect impurities [73, 74] form in the lattice pressure field p(x, y) = GB ...
Get Price2016-7-29 · Mechanism of chip formation during dry machining of Ni-based super alloys needs considerable research attention as it directly or indirectly affects different aspects of machinability. Therefore, the present research work aims at understanding the mechanism of chip formation with the help of various chip …
Get Price2012-12-20 · Textile dictionary 1. A Glossary of Selected Fiber and Textile Terms AAbrasion Resistance – The ability if a fiber or fabric to withstand surface wear and rubbing.Air Jet Spinning – A spinning system in which yarn is made by wrapping fibers around a corestream of fibers with compressed air.Air Permeability – The porosity, or the ease with which air …
Get Price2015-11-3 · Benlon India is also manufacturing double colored FDY in 400 and 800 Dn. We take two different color POY components and draw texturize the same together, which gives a fancy effect in furnishing and bed covers. Fully Drawn Yarns are produced by a continuous polymerisation process.
Get Price2018-4-7 · TextileFuture is happily presenting to you selected innovations showcased at ITM 2018 – in alphabetical order - by international textile machinery manufacturers. This might be helpful for planning your visit at the show. ITM 2018 is taking place from April 14 – 17, 2018 at the TÜYAP Fair Convention and Congress …
Get Price2021-1-10 · Abstract Transmission electron microscopy is an indispensable characterization tool for many applications in materials and life science. During the last 2 decades, enormous progress was made concerning aberration correctors, novel detectors and samples holders.
Get Price2012-6-1 · You can purchase PCI's 2012 Additives Handbook on CD for 29.95 plus shipping. The CD will also include a directory of additive suppliers and distributors. Please go to the PCI store to buy the CD today! Additives belong to a broad and diffuse category of key components in a coating formulation. They comprise a …
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Get Price2017-4-4 · 13. 3.Stitch class – 300 (Lock stitch) • At least two groups of threads are required. • One group of thread is called needle thread and another group of thread is called bobbin thread. • Extensibility …
Get Price2018-10-9 · As customary at TextileFuture, we produce for our readers this Newsletter as a sort of a guide to ITMA Asia+CITME taking place from October 15 -19, 2018 at the new National Exhibition and Convention Centre (NECC) in Shanghai, China. It is based upon all information we have on hand from selected exhibitors at …
Get PriceIn the magsail deorbiting system, a loop of aluminum or copper wire is deployed at the end of life of an Earth orbiting spacecraft, and energized with an electric current, producing a magnetic field. The magnetic field forces the wire into a circular loop, and creates a small magnetosphere around the spacecraft.
Get Price2012-1-27 · The mechanism: Plants evolved the fibrous carbon-containing material lignin for their stems and bark, millions of years before other creatures evolved ways to …
Get PriceAir-jet spun yarns originally were considered a type of open-end yarn, although recent work suggests that air-jet spinning is a kind of false twist and wrapping system. Air-jet spun yarns are composed of a central core surrounded by wrapper fibers, but no distinct boundary separates these two zones. The core of air-jet …
Get PriceThese peculiarities of FBS may the volume V of host atoms tend to cluster in compressed result in a rich variety of strain, charge and spin structures regions of the lattice [35]. Such Cottrell atmospheres of coexisting with the superconducting state, which can affect impurities [73, 74] form in the lattice pressure field p(x, y) = GB ...
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