Results 41 to 50 of about 271,764 (308)

Branch-Weight Unique Trees

open access: yesDiscussiones Mathematicae Graph Theory, 2022
A branch at a vertex x in a tree is a maximal subtree containing x as an endvertex. The branch-weight of x is the maximum number of edges in any branch at x.
Shang Jen-Ling
doaj   +1 more source

SPIDER: a balloon-borne CMB polarimeter for large angular scales [PDF]

open access: yes, 2010
We describe SPIDER, a balloon-borne instrument to map the polarization of the millimeter-wave sky with degree angular resolution. Spider consists of six monochromatic refracting telescopes, each illuminating a focal plane of large-format antenna-coupled ...
Ade, P. A. R.   +43 more
core   +2 more sources

Spider vision

open access: yesCurrent Biology, 2020
Morehouse provides an overview of spider vision, with an emphasis on the two main eye types found in spiders. Commonalities of form and function among spiders are discussed but also the huge diversity of eyes that are adapted to various ecological niches.
openaire   +2 more sources

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

open access: yesAdvanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro   +5 more
wiley   +1 more source

Biological conduits based on spider silk for reconstruction of extended nerve defects

open access: yesInnovative Surgical Sciences
The availability of appropriate conduits remains an obstacle for successful reconstruction of long-distance nerve defects. In previous sheep trials, we were able to bridge 6 cm nerve gaps with nerve conduits based on spider silk fibers with full ...
Vogt Peter M.   +6 more
doaj   +1 more source

Spider fauna of semi-dry grasslands on a military training base in Northwest Germany (Münster) [PDF]

open access: yes, 2010
The spider fauna of semi-dry grasslands on the military training area of Dorbaum near Münster (North Rhine-Westphalia) was investigated. From 2002 to 2003 a total of 11,194 mature spiders from 141 species and 20 families was caught by pitfall trapping ...
Buchholz, Sascha, Hartmann, Volker
core  

An unusual preparation of an eighteenth-century spider and its consequences [PDF]

open access: yes, 2014
Investigation into an eighteenth-century spider in the collection of The Hunterian Museum, Glasgow, revealed an unusual and intriguing mounting method for a natural history specimen.
Brown, Georgina, Hancock, E. Geoffrey
core   +1 more source

Translational Considerations for Injectable Biomaterials and Bioscaffolds to Repair and Regenerate Brain Tissue

open access: yesAdvanced Healthcare Materials, EarlyView.
The repair and regeneration of brain tissue faces both biological and technical challenges. Injectable bioscaffolds offer new opportunities to stimulate tissue regrowth in the brain by recruiting neural stem cells. Here, the translational issues are reviewed that need to be address to advance this promising new therapeutic approach from the bench to ...
Michel Modo, Alena Kisel
wiley   +1 more source

On the Completeness of Spider Diagrams Augmented with Constants [PDF]

open access: yes, 2013
Diagrammatic reasoning can be described formally by a number of diagrammatic logics; spider diagrams are one of these, and are used for expressing logical statements about set membership and containment. Here, existing work on spider diagrams is extended
Chapman, Peter   +4 more
core   +2 more sources

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

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