Results 1 to 10 of about 158 (87)

Cell lineage analysis of the mandibular segment of the amphipod Orchestia cavimana reveals that the crustacean paragnaths are sternal outgrowths and not limbs [PDF]

open access: yesFrontiers in Zoology, 2006
The question of arthropod head segmentation has become one of the central issues in Evolutionary Developmental Biology. The number of theories pertaining to head segments progressively enlarges, old concepts have been revitalized, and nearly every ...
Scholtz Gerhard, Wolff Carsten
doaj   +2 more sources

Application of Reverse Engineering and Rapid Prototyping for Reconstruction of Human Mandible [PDF]

open access: yes, 2021
Reconstruction of the mandible is one of the most common challenges facing maxillofacial surgeons. The mandible plays a major role in supporting the teeth inside the mouth. This work aims to develop a proposed methodology for improving reconstructive surgery by using the simulation of a mandibular defect using imaging, design, and fabrication ...
arxiv   +1 more source

An open-source, three-dimensional growth model of the mandible [PDF]

open access: yes, 2023
The available reference data for the mandible and mandibular growth consists primarily of two-dimensional linear or angular measurements. The aim of this study was to create the first open-source, three-dimensional statistical shape model of the mandible that spans the complete growth period. Computed tomography scans of 678 mandibles from children and
arxiv   +1 more source

A switchable joint in the head of dragonfly larvae (Insecta: Odonata) as key to the multifunctionality of the prehensile labial mask

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 339, Issue 7, Page 644-654, August 1, 2023., 2023
We used high‐speed videography, microcomputed tomography as well as angle measurements to assess the multifunctionality of the raptorial appendage in odonate larvae. Our results provide a further understanding of the unique prey‐capturing apparatus of odonate larvae capable of controlling a ‘switchable’ multiaxial to a restricted monoaxial joint ...
Alexander Koehnsen   +2 more
wiley   +1 more source

Equine allergic skin diseases: Clinical consensus guidelines of the World Association for Veterinary Dermatology

open access: yesVeterinary Dermatology, Volume 34, Issue 3, Page 175-208, June 2023., 2023
Abstract Background Allergic skin diseases are common in horses worldwide. The most common causes are insect bites and environmental allergens. Objectives To review the current literature and provide consensus on pathogenesis, diagnosis, treatment and prevention. Materials and Methods The authors reviewed the literature up to November 2022.
R. Marsella   +6 more
wiley   +1 more source

Sandy seeds: Armour or invisibility cloak? Mucilage‐bound sand physically protects seeds from rodents and invertebrates

open access: yesJournal of Ecology, Volume 111, Issue 3, Page 540-551, March 2023., 2023
The totality of the results from this and previous studies across granivore taxa and plant species suggests that seed mucilage is a widespread and highly effective physical defence employed by many plants against diverse granivores in many environments.
Eric F. LoPresti   +5 more
wiley   +1 more source

Generating Classes of 3D Virtual Mandibles for AR-Based Medical Simulation [PDF]

open access: yesJournal of the Society for Simulation in Healthcare (2008), vol. 3(2), pp. 103-110, 2018
Simulation and modeling represent promising tools for several application domains from engineering to forensic science and medicine. Advances in 3D imaging technology convey paradigms such as augmented reality (AR) and mixed reality inside promising simulation tools for the training industry.
arxiv   +1 more source

Computed tomography data collection of the complete human mandible and valid clinical ground truth models [PDF]

open access: yesWallner, J. et al. Computed tomography data collection of the complete human mandible and valid clinical ground truth models. Sci. Data. 6:190003 https://doi.org/10.1038/sdata.2019.3 (2019), 2019
Image-based algorithmic software segmentation is an increasingly important topic in many medical fields. Algorithmic segmentation is used for medical three-dimensional visualization, diagnosis or treatment support, especially in complex medical cases.
arxiv   +1 more source

AntGrip -- Boosting Parallel Plate Gripper Performance Inspired by the Internal Hairs of Ant Mandibles [PDF]

open access: yesarXiv, 2023
Ants use their mandibles - effectively a two-finger gripper - for a wide range of grasping activities. Here we investigate whether mimicking the internal hairs found on ant mandibles can improve performance of a two-finger parallel plate robot gripper.
arxiv  

Network Evolution of Body Plans [PDF]

open access: yesPLoS ONE, 3(7) e2772 (2008), 2008
Segmentation in arthropod embryogenesis represents a well-known example of body plan diversity. Striped patterns of gene expression that lead to the future body segments appear simultaneously or sequentially in long and short germ-band development, respectively.
arxiv   +1 more source

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