Results 31 to 40 of about 6,701 (199)

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Optimization of Technical Training of Ice-Hockey Players Aged 8–17 Years

open access: yesBaltic Journal of Sport and Health Sciences, 2018
Research background and hypothesis. Training models in athlete training have already been determined by sport researchers (Hellard et al., 2006. The programme that has been developed and tested by one alternative experiment is targeted to optimize the ...
Gracijus Girdauskas, Rimas Kazakevičius
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga   +4 more
wiley   +1 more source

Contribution of inline skating to learning basics of alpine skiing

open access: yesSportLogia, 2017
Aim of this research was to determine contribution of inline skating to learning basics of alpine skiing. We included 139 participants, who were attributed to two groups - control and experimental.
Igor Božić   +4 more
doaj   +1 more source

Erwin Schrödinger und die Versuchungen der (Wissenschafts‐)Biografik: Vorurteilsgefüge und Mechanismen der Skandalisierung

open access: yesBerichte zur Wissenschaftsgeschichte, EarlyView.
Since late 2021, serious allegations have been made against physicist Erwin Schrödinger, ranging from pedophilia to serial sexual abuse. These accusations have significantly tarnished the Nobel Prize winner's public reputation. The ongoing debate has repeatedly raised the question of whether, and to what extent, these grave allegations are justified ...
Magdalena Gronau, Martin Gronau
wiley   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

open access: yesFlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu   +3 more
wiley   +1 more source

The Kinematic and Electromyographic Analysis of Roller Skating at Different Speeds on a Treadmill: A Case Study

open access: yesSensors
Elite athletes in speed roller skates perceive skating to be a more demanding exercise for the groin when compared to other cyclic disciplines, increasing their risk of injury.
Giulia Bongiorno   +9 more
doaj   +1 more source

Sprint skating profile of competitive female bandy players: An analysis of positional and playing-level differences

open access: yesFrontiers in Physiology, 2023
There is no research examining female bandy players, which creates a gap of knowledge of female skating performance and its determinants with male skating performance, not only in bandy but also in exercise science in general.
Roland van den Tillaar   +2 more
doaj   +1 more source

An Outline of a Theory of Play

open access: yesSymbolic Interaction, EarlyView.
Play is often dismissed as trivial, yet it is a fundamental and adaptive aspect of human and mammalian life. This paper develops a sociological theory of play, treating it as a total social fact that spans biological, psychological, and social dimensions.
Seth Abrutyn
wiley   +1 more source

Passive wheels on legged robots: a survey

open access: yesFrontiers in Robotics and AI
In recent years, highly dynamic robots have seen a significant rise in both consumer and research applications. Much of the focus on legged robots stems from their ability to adapt to a world built for humans, but energy inefficiency and battery capacity
James Florin Petri, Gerard Lacey
doaj   +1 more source

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