Results 81 to 90 of about 554,448 (300)

The Schottky problem in genus five [PDF]

open access: yes, 2012
In this paper, we present a solution to the Schottky problem in the spirit of Schottky and Jung for genus five curves. To do so, we exploit natural incidence structures on the fibers of several maps to reduce all questions to statements about the Prym ...
Siegel, Charles
core  

Fiber propagation of vector modes

open access: yes, 2015
Here we employ both dynamic and geometric phase control of light to produce radially modulated vector-vortex modes, the natural modes of optical fibers.
Bruning, Robert   +4 more
core   +1 more source

Non-natural metrics on the tangent bundle [PDF]

open access: yes, 2020
Natural metrics provide a way to induce a metric on the tangent bundle from the metric on its base manifold. The most studied type is the Sasaki metric, which applies the base metric separately to the vertical and horizontal components.
Tron, Roberto, Vang, Bee
core  

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

open access: yesAdvanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan   +2 more
wiley   +1 more source

Exploring natural plant fiber choices and treatment methods for contemporary composites: A comprehensive review

open access: yesResults in Engineering
The growing importance of composite materials in engineering is reshaping industries such as automotive, maritime, sports, and aerospace. As industries seek sustainable alternatives to synthetic fibers, natural fibers have emerged as a promising solution
Muthuselvan Balasubramanian   +2 more
doaj   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Automated Measurement of Spatially Resolved Hair-Hair Single Fiber Adhesion. [PDF]

open access: yes, 2019
The adhesion force between individual human hair fibers in a crosshair geometry was measured by observing their natural bending and adhesive jumps out of contact, using optical video microscopy.
Andresen Eguiluz, Roberto C   +10 more
core  

Quasi-static and low-velocity impact behavior of intraply hybrid flax/basalt composites [PDF]

open access: yes, 2019
In an attempt to increase the low-velocity impact response of natural fiber composites, a new hybrid intraply woven fabric based on flax and basalt fibers has been used to manufacture laminates with both thermoplastic and thermoset matrices.
Antonucci, Vincenza   +8 more
core   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller   +8 more
wiley   +1 more source

On the path to a new generation of cement-based composites through the use of lignocellulosic micro/nanofibers [PDF]

open access: yes, 2019
Due to its high biocompatibility, bio-degradability, and low cost, cellulose finds application in disparate areas of research. Here we focus our attention on the potential applications of cellulose nanofiber in cement-basedmaterials for the building ...
Chamorro Trenado, Miquel Ángel   +7 more
core   +2 more sources

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