Results 111 to 120 of about 61,754 (316)

The Erdös-Sós Conjecture for Spiders [PDF]

open access: yesarXiv, 2018
The Erd\"os-S\'os conjecture states that if $G$ is a graph with average degree more than $k-1$, then G contains every tree of $k$ edges. A spider is a tree with at most one vertex of degree more than 2. In this paper, we prove that Erd\"os-S\'os conjecture holds for all spiders.
arxiv  

Airway spider or airway spiders? [PDF]

open access: yesAnaesthesia, 2018
Flavia Petrini, Massimiliano Sorbello
openaire   +3 more sources

Chromosome‐Level Genome Assembly of the Leafcutter Bee Megachile rotundata Reveals Its Ecological Adaptation and Pollination Biology

open access: yesAdvanced Science, EarlyView.
The genome of Megachile rotundata, an extensively managed solitary pollination bee species, has been sequenced, covering 280.68 Mb and predicting 10 701 genes. The study reveals significant expansions of the Toll gene family and their abundant expression in diapause prepupae, highlighting enhanced immune responses during diapause. This genome serves as
Rangjun Shi   +8 more
wiley   +1 more source

Trichobothrial mediation of an aquatic escape response: Directional jumps by the fishing spider, Dolomedes triton, foil frog attacks

open access: yesJournal of Insect Science, 2003
Fishing spiders (Pisauridae) frequent the surfaces of ponds and streams and thereby expose themselves to predation by a variety of aquatic and semi-aquatic vertebrates. To assess the possibility that the impressive jumps of fishing spiders from the water
Robert B. Suter
doaj  

Spider–Plant Interaction: The Role of Extrafloral Nectaries in Spider Attraction and Their Influence on Plant Herbivory and Reproduction

open access: yesPlants
Spiders, abundant and diverse arthropods which occur in vegetation, have received little attention in studies investigating spider–plant interactions, especially in plants which have extrafloral nectaries (EFNs).
Karoline Pádua de Oliveira Dias   +1 more
doaj   +1 more source

Erstnachweis von Evarcha michailovi in Deutschland (Araneae: Salticidae) sowie weitere für Mecklenburg-Vorpommern neue Spinnenarten

open access: yesArachnologische Mitteilungen, 2014
The jumping spider Evarcha michailovi Logunov 1992 was recorded as new to Germany from a nature reserve in the south of Mecklenburg-Western Pomerania in a dry heathland habitat. Furthermore, the first records of the jumping spiders Evarcha laetabunda (C.
Martin, Dieter
doaj   +1 more source

Ants (Hymenoptera: Formicidae) and Spiders (Araneae) Co-occurring on the Ground of Vineyards from Douro Demarcated Region

open access: yesSociobiology, 2017
This study, held in vineyards from Douro Demarcated Region, aimed to: a) identify the communities and main functional groups of spiders and ants; b) check patterns of co-occurrence between the two communities; and c) evaluate the impact of ground cover ...
Fátima Gonçalves   +5 more
doaj   +1 more source

A Bifunctional Fibrous Scaffold Implanted with Amorphous Co2P as both Cathodic and Anodic Stabilizer for High‐Performance Li─S Batteries

open access: yesAdvanced Science, EarlyView.
An amorphous Co2P‐embedded porous carbon nanofiber membrane (A─Co2P/PCNF) via electrospinning/in situ phosphorization is developed to serve as the dual‐electrode stabilizer for Li─S batteries. The amorphization strategy enables more exposed undercoordinated Co sites with optimized d‐band centers, enhanced LiPSs adsorption/catalysis, and lithiophilicity‐
Gang Zhao   +9 more
wiley   +1 more source

Health‐related quality of life following total minimally invasive, hybrid minimally invasive or open oesophagectomy: a population‐based cohort study

open access: yesBJS (British Journal of Surgery), EarlyView., 2020
All patients operated for oesophageal cancer in Sweden from 2013 to April 2018 were identified, and 246 patients were recruited to this population‐based nationwide Swedish study. The results show that longitudinal health‐related quality of life after minimally invasive oesophagectomy was similar to that of the open surgical approach.
F. Klevebro   +4 more
wiley   +1 more source

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