Results 71 to 80 of about 61,754 (316)
Is the spider a good biological control agent for Plutella xylostella (Lepidoptera: Plutellidae)?
Zoologia (Curitiba), 2018 Spiders, as predators of insects and other invertebrates, are an important part of the natural enemies, and they are recognized as an important biological control agent.
Xuan Huang +4 more
doaj +1 more source
Spiders can be recognized by counting their legs [PDF]
arXiv, 2014 Spiders are arthropods that can be distinguished from their closest relatives, the insects, by counting their legs. Spiders have 8, insects just 6. Spider graphs are a very restricted class of graphs that naturally appear in the context of cograph editing. The vertex set of a spider (or its complement) is naturally partitioned into a clique (the body),
arxiv
Diffusion spiders: Green kernel, excessive functions and optimal stopping [PDF]
arXiv, 2022 A diffusion spider is a strong Markov process with continuous paths taking values on a graph with one vertex and a finite number of edges (of infinite length). An example is Walsh's Brownian spider where the process on each edge behaves as Brownian motion.
arxiv
Advanced Materials, EarlyView.Laser micropatterning is presented as a promising technology in the search for autonomous dew water harvesting materials. Laser‐grooved metallic surfaces achieve simultaneously high infrared emissivity and superhydrophilicity, which gives them self‐cooling properties under atmospheric radiative deficit and the ability to condense water in an efficient ...
Pablo Pou‐Álvarez +7 more
wiley +1 more source
Ballooning Spiders: The Case for Electrostatic Flight [PDF]
arXiv, 2013 We consider general aspects of the physics underlying the flight of Gossamer spiders, also known as ballooning spiders. We show that existing observations and the physics of spider silk in the presence of the Earth's static atmospheric electric field indicate a potentially important role for electrostatic forces in the flight of Gossamer spiders.
arxiv
Hooke and Coulomn Energy of Tripod Spiders [PDF]
Proceedings of Ilia Vekua Institute ofApplied Mathematics, Vol 72
(2022) 39-46, 2023 Tripod spiders are the simplest examples of arachnoid mechanisms. Their workspaces and configuration spaces are well known. For Hooke potential, we give a complete description of the Morse theory and treat the robust control of the spider. For the Coulomb energy, we use stationary charges and the trapping domain to study the robust control of spiders ...
arxiv
Manipulating the Assembly and Architecture of Fibrillar Silk
Advanced Materials, EarlyView.In this study, advanced in situ AFM, PiFM, and Cryo‐EM are leveraged to realize in situ observations of nucleation, growth, and degradation of silk nanofibrils. A clear picture of the assembly and structural evolution of regenerated silk nanofibrils is defined and demonstrates a novel strategy for manipulating their structure and properties, which ...
Chenyang Shi +3 more
wiley +1 more source
Venomous Spiders of the Southeastern US: An Unexpected Threat
Journal of the Georgia Public Health Association, 2015 Background: Environmental health specialists recommend that residents of the Southeastern US, including Georgia, have the ability to identify the three venomous spiders indigenous to this area.
Alex Collins, Oreta Samples
doaj +1 more source
Nature, 1874 A SPIDER constructed its web in an angle of my garden, the sides of which were attached by long threads to shrubs at the height of nearly three feet from the gravel path beneath. Being much exposed to the wind, the equinoctial gales of this autumn destroyed the web several times.
openaire +3 more sources
Titanium Oxysulfate‐Derived 1D Lepidocrocite Titanate Nanostructures
Advanced Materials Interfaces, EarlyView.A novel synthesis protocol is presented for creating high‐quality titania nanofilaments. This method transcends the limitations of traditional techniques, leveraging a solution precipitation process fine‐tuned for lower temperatures and minimal reagent use. The result?
Sukanya Maity +8 more
wiley +1 more source