The equilibrium of the convergence point in two-strand yarn plying

Fraser, W. B.; Stump, D. M.

doi:10.1016/s0020-7683(97)89372-9

Cited by 29 publications

(16 citation statements)

References 8 publications

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“…In such cases, being applied to the both tails of a linear DNA hairpin (or to the opposite strands of a cyclic DNA duplex) confined within the nanopore, the torques with respect to the relevant Manning clouds ought to promote some specific writhing -and thus refolding -of the DNA tertiary structure, to form a combination of balanced plies with end loops. [59][60][61] It is intuitively clear that, in turn, such compact tertiary superhelical structuresought to be effectively translocated through the nanopore at times much shorter -and will cause much deeper ionic current dips than those of the corresponding completely unfolded DNA tertiary structures, just as observed in experiments. 4 In contrast, linear DNA hairpins folded only partially (or cyclic DNA duplexes), that is, without plies, could in many cases clog the nanopore or even be rejected by the latter -just as revealed by computer simulations.…”

mentioning

confidence: 87%

Screw Motion of Dna Duplex During Translocation Through Pore I: Introduction of the Coarse-Grained Model

Starikov

Hennig

Yamada³

et al. 2009

Biophys. Rev. Lett.

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Based upon the structural properties of DNA duplexes and their counterion-water surrounding in solution, we have introduced here a screw model which may describe translocation of DNA duplexes through artificial nanopores of the proper diameter (where the DNA counterion-hydration shell can be intact) in a qualitatively correct way. This model represents DNA as a kind of "screw," whereas the counterion-hydration shell is a kind of "nut." Mathematical conditions for stable dynamics of the DNA screw model are investigated in detail. When an electrical potential is applied across an artificial membrane with a nanopore, the "screw" and "nut" begin to move with respect to each other, so that their mutual rotation is coupled with their mutual translation. As a result, there are peaks of electrical current connected with the mutual translocation of DNA and its counterion-hydration shell, if DNA is possessed of some non-regular base-pair sequence. The calculated peaks of current strongly resemble those observed in the pertinent experiments. An analogous model could in principle be applied to DNA translocation in natural DNA-protein complexes of biological interest, where the role of "nut" would be played by protein-tailored "channels." In such cases, the DNA screw model is capable of qualitatively explaining chemical-to-mechanical energy conversion in DNA-protein molecular machines via symmetry breaking in DNA-protein friction.

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mentioning

confidence: 87%

Screw Motion of Dna Duplex During Translocation Through Pore I: Introduction of the Coarse-Grained Model

Starikov

Hennig

Yamada³

et al. 2009

Biophys. Rev. Lett.

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“…Software modelled on this principle can be "trained" to capture non-linear relationship between the input and the output variables. A number of different principles/models of ANN have been developed and the present most commonly used model is the layered feed forward neural network with multiple layers and with the back propagation-learning algorithm [16]. An ANN is a computing system composed of a number of highly interconnected layers of simple neurons like processing elements which process information by a dynamic response to external inputs.…”

Section: Artificial Neural Network (Ann)mentioning

confidence: 99%

Prediction of the Spinning Triangle Height in Ring Frame Using Artificial Neural Networks

Murugesan¹,

Senthilkumar²,

Nayar³

2017

IOSR JPTE

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“…changes the force and moment equilibrium equations for the idealised n-ply structure are given by Equations (34) and (35) of Fraser and Stump (1998a):…”

Section: R(s)mentioning

confidence: 99%

Torsional properties of staple fibre plied yarns

Phillips¹,

Tran²,

Fraser³

et al. 2010

Journal of the Textile Institute

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A mathematical analysis of the mechanical governing equations applying to the torsional behaviour of multi-ply yarns under tension has been carried out. This analysis clearly shows that there are two components, a geometric component that determines the slope or gradient of the torque due to tension and a component that determines the yarn torque at zero applied tension (intrinsic torque) that depends on the fibre number, fibre moduli and diameter as well as the strand structural geometry. The effect of the ratio of the ply twist to the spinning twist of the single strands on the torque properties has been numerically analysed for two, three and four-ply yarns prepared from single 31 tex yarns. The model has been compared with experimental torque data for a range of two-ply yarns plied at different percentages of the singles spinning twist and also with different yarn histories and test environments. The experimental data reflect the trends identified by the model.

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The equilibrium of the convergence point in two-strand yarn plying

Cited by 29 publications

References 8 publications

Screw Motion of Dna Duplex During Translocation Through Pore I: Introduction of the Coarse-Grained Model

Screw Motion of Dna Duplex During Translocation Through Pore I: Introduction of the Coarse-Grained Model

Prediction of the Spinning Triangle Height in Ring Frame Using Artificial Neural Networks

Torsional properties of staple fibre plied yarns

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