Community Content
Calculating ancient temperatures using oxygen
What are isotopes? The term isotope was coined by English radiochemist Fredrick Soddy (1913) to distinguish chemical elements with different atomical mass, different numbers of neutrons, but which occupy the same position of the periodic table, i.e. have the same numbers of protons and electrons. The term isotope is derived from iso meaning equal and the Greek topos meaning […]
Right pelvic kidney during intersphincteric resection for locally advanced rectal cancer: a case report
Case presentation This case report describes the case of a 40-year-old Asian man with complaints of bleeding and a feeling of discomfort in his anus. A colonoscopy revealed a raised large multilobulated mass in his rectum. Multiple biopsies of the lesion were done after detecting a tumour in his rectum 4 cm above the dentate line; a diagnosis of rectal […]
The Porta Nigra in Trier – Bauforschung, Archaeology, and Art History
Comments about the building and its ancient, medieval and early modern history and use have been made over centuries. There is also a considerable number of historical documents that allow various hypotheses about the building or construction. It was an ancient city gate, which was extended in the Middle Ages by the construction of a collegiate church. However, on […]
What can ecstasy (the common party drug) tell us about hydration physiology and metabolic health?
The role of drinking water and keeping well hydrated to improve our health is a hotly cited media favourite. However, while we have ample knowledge on the extreme effects of hyperhydration (‘over-hydration’) and hypohydration (the state of lower total body water, commonly called ‘dehydration’), we know surprisingly little about how daily fluctuations in body water balance impact our health […]
Contributions of Blumenberguian Philosophy to the Debate on Current Society
The anthropogenic understanding of boredom from Blumenberg’s philosophy (Ros Velasco 2017a; 2018; 2019) leads us to think about conflicts as natural phenomena that have characterised and shaped human beings since ancient times (Ros Velasco 2013). According to his view, boredom was an emotion selected in our ancestors because of its capacity to promote motion, creating a positive and beneficial conflict […]
Towards the application of virtual reality training to improve the performance in sports by the example of karate
Methods For both studies, we created virtual characters using motion capturing on the basis of five high-skilled athletes who performed several attacks which were chosen based on previous competition analyses. Afterwards, we carried out two training studies. Study 1: training of response behaviour and attack recognition using HMD Fifteen experienced karate athletes responded to sports specifically in a VR […]
Does visual perception in virtual reality differ from reality?
Method To eliminate the technical factors that would influence gaze results, the eye-tracking devices chosen in this study for R and VR were developed and constructed by the same company (SensoMotoric Instruments, Germany). The eye-tracking technology and the level of accuracy in both conditions were therefore assumed to be the same. Next, 21 young subjects (age from 19 to […]
A simple model of convection to study the atmospheric surface layer
Since being immortalised in Hollywood film, “the butterfly effect” has become a commonplace concept, despite its obscure origins. Its name derives from an object known as the Lorenz attractor, which has the form of a pair of butterfly wings. It is a portrait of chaos, the underlying principle hindering long-term weather prediction: just a small change in initial conditions leads […]
Trampoline parks improve strength and balance
Jumping on a trampoline can be a fun, enjoyable, and attractive activity for many. This may be why trampoline parks are becoming very popular around the world, providing recreational facilities for children and adults to enjoy jumping. While there have been safety concerns related to accidents and injuries occurring at trampoline parks, there is growing evidence of the beneficial effects […]
Strengthen Leg Muscles to Relieve Low Back Pain
Chronic low back pain is a common problem among recreational runners, affecting approximately one in seven runners. Clinically, there is no specific protocol to treat low back pain for runners. Physiotherapists generally adopt exercise protocols targeting different back muscles in the same way as they treat other patients with back pain. Some exercises train the global, bigger muscle groups responsible […]