Results 31 to 40 of about 158 (87)
Anisotropic optical response of arthopods's cuticle [PDF]
arXiv, 2023 The structure of the cuticle of arthropods consists of layers of microfilamentary chitin particles. The layers are stacked one on top of the other realizing a helical (Bouligand helix) pattern. This structure generates optical phenomena such as structural colors and birefringence that produce a metalic or iridescent appearance, polarization upon ...
arxiv
Localization of Lupoid Leishmaniasis on the face: A case control study
JEADV Clinical Practice, Volume 3, Issue 2, Page 653-657, June 2024.Abstract Background In Lupoid Leishmaniasis, erythematous to brown papules often occur around a central old scar, which can expand over time. For unclear reasons, these lesions tend to develop on the facial area. Objectives This study was conducted to study the distribution of Lupoid Leishmaniasis lesions on the face and compare them with those of ...
Mohammad J. Yazdanpanah +4 more
wiley +1 more source
Robustness study of noisy annotation in deep learning based medical image segmentation [PDF]
arXiv, 2020 Partly due to the use of exhaustive-annotated data, deep networks have achieved impressive performance on medical image segmentation. Medical imaging data paired with noisy annotation are, however, ubiquitous, but little is known about the effect of noisy annotation on deep learning-based medical image segmentation.
arxiv
Ecology and Evolution, Volume 14, Issue 5, May 2024.How pterygotid sea scorpions used their tripartite elongate cheliceres to get prey items close to the mouth region remains a conundrum. We applied four different 3D kinematic settings with regard to insertion and orientation of the cheliceres to examine the most likely way this was realized.
Michel Schmidt, Roland R. Melzer
wiley +1 more source
Ecology and Evolution, Volume 14, Issue 4, April 2024.We confirmed that different populations of Xyleborinus saxesenii have different chemical profiles. However, we found no evidence for different behavioural responses in relation to these chemical differences, which is surprising considering the typical, highly aggressive response displayed by other social insects in similar situations.
Antoine Melet +3 more
wiley +1 more source
Sea Spider development: How the encysting Anoplodactylus eroticus matures from a buoyant nymph to a grounded adult [PDF]
arXiv, 2013 In order to understand how animals evolved over time, biologists must learn how their body parts form during their development. The following is a detailed description of how one species of sea spider transforms from a hatchling to an 8-legged adult. Pycnogonids, or sea spiders, comprise a primitive lineage of arthropods.
arxiv
Statistical skull models from 3D X-ray images [PDF]
arXiv, 2006 We present 2 statistical models of the skull and mandible built upon an elastic registration method of 3D meshes. The aim of this work is to relate degrees of freedom of skull anatomy, as static relations are of main interest for anthropology and legal medicine.
arxiv
The feeding apparatus of ants: an overview of structure and function. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2023 Richter A, Economo EP.
europepmc +1 more source
Egocentric Path Integration Models and their Application to Desert Arthropods [PDF]
arXiv, 2005 Path integration enables desert arthropods to find back to their nest on the shortest track from any position. To perform path integration successfully, speeds and turning angles along the preceding outbound path have to be measured continuously and combined to determine an internal {\em global vector} leading back home at any time.
arxiv
Evolution of flexible biting in hyperdiverse parasitoid wasps. [PDF]
Proc Biol Sci, 2022 van de Kamp T +11 more
europepmc +1 more source