Modeling and simulation of curved fibers in dry spinning scenarios
Dry spinning is characterized by the simultaneous production of multiple thin polymeric fibers in airflows and the evaporation of the solvent contained in these fibers.
Manuel Wieland +3 more
doaj +1 more source
Increased efficiency of direct nanoimprinting on planar and curved bulk titanium through surface modification [PDF]
In this work the direct transfer of nanopatterns into titanium is demonstrated. The nanofeatures are imprinted at room temperature using diamond stamps in a single step.
Ali Z. Khokhar +35 more
core +1 more source
ASYMPTOTIC TRANSITION FROM COSSERAT ROD TO STRING MODELS FOR CURVED VISCOUS INERTIAL JETS [PDF]
This work deals with the modeling and simulation of slender viscous jets exposed to gravity and rotation, as they occur in rotational spinning processes. In terms of slender-body theory, we show the asymptotic reduction of a viscous Cosserat rod to a string system for vanishing slenderness parameter. We propose two string models, i.e.
Arne, W., Marheineke, N., Wegener, R.
openaire +3 more sources
A model of a general elastic curved rod
AbstractWe indicate a new approach to the deformation of three‐dimensional curved rods with variable cross‐section. The model consists of a system of nine ordinary differential equations for which we prove existence and uniqueness via the coercivity of the association bilinear form.
Ignat, Anca +2 more
openaire +3 more sources
Mechanics and dynamics of translocating MreB filaments on curved membranes
MreB is an actin homolog that is essential for coordinating the cell wall synthesis required for the rod shape of many bacteria. Previously we have shown that filaments of MreB bind to the curved membranes of bacteria and translocate in directions ...
Felix Wong, Ethan C Garner, Ariel Amir
doaj +1 more source
Distinct cytoskeletal proteins define zones of enhanced cell wall synthesis in Helicobacter pylori
Helical cell shape is necessary for efficient stomach colonization by Helicobacter pylori, but the molecular mechanisms for generating helical shape remain unclear. The helical centerline pitch and radius of wild-type H.
Jennifer A Taylor +13 more
doaj +1 more source
A New Top-Mounted Shear-Hinge Structure Based on Modal Theory and Rubber-Pad Damping Theory
Steel-spring floating-slab tracks (SSFSTs) are widely used as efficient vibration-damping beds, and in China, they are mainly used in subways and municipal railroads.
He En, Yuelei He, Hongyao Lu, Anbin Wang
doaj +1 more source
Abnormal photoreceptor outer segment development and early retinal degeneration in kif3a mutant zebrafish [PDF]
Photoreceptors are highly specialized sensory neurons that possess a modified primary cilium called the outer segment. Photoreceptor outer segment formation and maintenance require highly active protein transport via a process known as intraflagellar ...
Akhtar +44 more
core +2 more sources
4D rods: 3D structures via programmable 1D composite rods
Slender 1D structures are ubiquitous in nature and engineering and serve as building blocks for 3D structures at scales ranging from molecular to architectural. 3D printing enables fabrication of such structures with geometrical complexity that cannot be
Zhen Ding +3 more
doaj +1 more source
Eccentric Wear Mechanism and Centralizer Layout Design in 3D Curved Wellbores
In deep oil and gas wells, sucker rod strings (SRS) frequently experience breakage and eccentric wear problems. To address this engineering challenge, this study establishes a new coupled three-dimensional (3D) mechanical-mathematical model for sucker ...
Ziming Feng +3 more
doaj +1 more source

