237 research outputs found
Studenterinvolvering via ressourcemĂŠssig effektiv peer review i et obligatorisk kursus i fysikken i medicinsk billeddannelse
Peer review i et obligatorisk bachelorkursus for civilingeniĂžrstuderende i medikoteknik
Et nyudviklet peer review-system, der integrerer studenterdata, administration og grafiske procesoversigter, blev afprÞvet i et obligatorisk bachelorkursus. Overens-stemmelse mellem de studerende og hjÊlpelÊrernes kvantitative bedÞmmelser blev undersÞgt for en relativt udfordrende opgave med 15 delspÞrgsmÄl. 49 stude-rende afleverede besvarelser. EfterfÞlgende blev hver besvarelse bedÞmt af tre medstuderende, svarende til at 735 delbesvarelser blev bedÞmt. Ud af disse var der enighed mellem studenterbedÞmmerne og hjÊlpelÊrerne i 480 tilfÊlde (65 %). I under 3,5 % af tilfÊldene var der total uenighed. Der var tendens til, at jo mere rig-tigt en besvarelse blev bedÞmt, eller jo mere konkret svaret var, des mere enighed. En interviewundersÞgelse hos de studerende viste stor opbakning til fremgangsmÄ-den og viste ogsÄ, at de studerende fandt det meget nyttigt at se andre studerendes besvarelser sÄvel som rettevejledningen. Afslutningsvis gives en rÊkke anbefalinger til processen og systemet
Peer review i et obligatorisk bachelorkursus for civilingeniĂžrstuderende i medikoteknik
Et nyudviklet peer review-system, der integrerer studenterdata, administration og grafiske procesoversigter, blev afprÞvet i et obligatorisk bachelorkursus. Overens-stemmelse mellem de studerende og hjÊlpelÊrernes kvantitative bedÞmmelser blev undersÞgt for en relativt udfordrende opgave med 15 delspÞrgsmÄl. 49 stude-rende afleverede besvarelser. EfterfÞlgende blev hver besvarelse bedÞmt af tre medstuderende, svarende til at 735 delbesvarelser blev bedÞmt. Ud af disse var der enighed mellem studenterbedÞmmerne og hjÊlpelÊrerne i 480 tilfÊlde (65 %). I under 3,5 % af tilfÊldene var der total uenighed. Der var tendens til, at jo mere rig-tigt en besvarelse blev bedÞmt, eller jo mere konkret svaret var, des mere enighed. En interviewundersÞgelse hos de studerende viste stor opbakning til fremgangsmÄ-den og viste ogsÄ, at de studerende fandt det meget nyttigt at se andre studerendes besvarelser sÄvel som rettevejledningen. Afslutningsvis gives en rÊkke anbefalinger til processen og systemet
<i>Zygomaticus major</i> muscle bony attachment site:a Thiel-embalmed cadaver study
Objective: Thezygomaticus major is a principal muscle of facial expression which is engaged when smiling. The zygomaticus major origin of the zygomatic bone is often discussed relevant to its importance in the field of plastic surgery. In addition, the zygomaticus major attachment site is also significant for forensic craniofacial reconstruction, separating the cheek into frontal and lateral surfaces. However, there are discrepancies amongst published articles regarding the precise origin of the zygomaticus major muscle. The aim of this study is to investigate more distinctive and palpable landmarks as the bony attachment of the zygomaticus major. Methods: This project is the first zygomaticus major dissection study utilising Thiel embalmed cadavers. Fifty-two facial dissections were investigated in 26 Thiel embalmed bodies, bequeathed to the Centre for Anatomy and Human Identification at The University of Dundee between 2013 and 2015. Results: This study found that the origin of zygomaticus major muscle was located at the superior margin of the temporal process on the lateral surface of zygomatic bone. Moreover, the zygomaticus major muscle overlapped the anterosuperior border of the masseter muscle. One out of 52 zygomaticus major muscles presented bifurcation. Conclusion: The origin site of zygomaticus major is considered important to increase resemblance in forensic craniofacial reconstruction. Furthermore, since zygomaticus major is a salient muscle involved in facial expression, the potential effects for cosmetic/surgical procedures are also relevant to the medical field and successful surgical outcomes. The current study provided easily palpable landmarks of zygomaticus major origin site which is beneficial for both surgeons and forensic craniofacial reconstruction practitioners. © 202
Recommended from our members
Carbon stable isotope analysis of cereal remains as a way to reconstruct water availability: preliminary results
Reconstructing past water availability, both as rainfall and irrigation, is important to answer questions about the way society reacts to climate and its changes and the role of irrigation in the development of social complexity. Carbon stable isotope analysis of archaeobotanical remains is a potentially valuable method for reconstructing water availability. To further define the relationship between water availability and plant carbon isotope composition and to set up baseline values for the Southern Levant, grains of experimentally grown barley and sorghum were studied. The cereal crops were grown at three stations under five different irrigation regimes in Jordan. Results indicate that a positive but weak relationship exists between irrigation regime and total water input of barley grains, but no relationship was found for sorghum. The relationship for barley is site-specific and inter-annual variation was present at Deir âAlla, but not at Ramtha and Khirbet as-Samra
Behind film performance in Chinaâs changing institutional context:The impact of signals
Grounded in signaling theory, this paper investigates the signals reflecting product quality, innovativeness, reputation and cultural background which influence film performance, i.e. film survival (duration on cinema screen) and box office success, in Chinaâs changing institutional context. This market has grown substantially and still possesses potential for further development. However, Chinaâs unique institutional context presents challenges. By examining an expanded range of potential signals, two of which have not previously been examined in the literature, namely imported films and enhanced format film formats such as 3D and IMAX, we develop a conceptual framework and argue that signaling theory needs to be combined with institutional context. Similar to findings for film industries in other countries, we find quality and reputational signals including budget, star power, sequels, and online consumer reviews to be important in China. However, unique results are also revealed. Chinese consumers react to an innovativeness signal in that they are specifically attracted to enhanced format films. Film award nominations and prizes are insignificant reputational signals. Once other signals are taken into account, imported films on average do not perform as well as domestic films. We link these findings to Chinaâs unique institutional setting and offer important implications for management, recognizing the challenges to film companies of competing in an increasingly globalized market. The paper is also of relevance to policymakers given their continued efforts in shaping the development of Chinaâs film industry
Mechanism of succinate efflux upon reperfusion of the ischaemic heart.
AIMS: Succinate accumulates several-fold in the ischaemic heart and is then rapidly oxidized upon reperfusion, contributing to reactive oxygen species production by mitochondria. In addition, a significant amount of the accumulated succinate is released from the heart into the circulation at reperfusion, potentially activating the G-protein-coupled succinate receptor (SUCNR1). However, the factors that determine the proportion of succinate oxidation or release, and the mechanism of this release, are not known. METHODS AND RESULTS: To address these questions, we assessed the fate of accumulated succinate upon reperfusion of anoxic cardiomyocytes, and of the ischaemic heart both ex vivo and in vivo. The release of accumulated succinate was selective and was enhanced by acidification of the intracellular milieu. Furthermore, pharmacological inhibition, or haploinsufficiency of the monocarboxylate transporter 1 (MCT1) significantly decreased succinate efflux from the reperfused heart. CONCLUSION: Succinate release upon reperfusion of the ischaemic heart is mediated by MCT1 and is facilitated by the acidification of the myocardium during ischaemia. These findings will allow the signalling interaction between succinate released from reperfused ischaemic myocardium and SUCNR1 to be explored
Tantalum carbide as a novel support material for anode electrocatalysts in polymer electrolyte membrane water electrolysers
Super-heavy fermion material as metallic refrigerant for adiabatic demagnetization cooling
Low-temperature refrigeration is of crucial importance in fundamental
research of condensed matter physics, as the investigations of fascinating
quantum phenomena, such as superconductivity, superfluidity and quantum
criticality, often require refrigeration down to very low temperatures.
Currently, cryogenic refrigerators with He gas are widely used for cooling
below 1 Kelvin. However, usage of the gas is being increasingly difficult due
to the current world-wide shortage. Therefore, it is important to consider
alternative methods of refrigeration. Here, we show that a new type of
refrigerant, super-heavy electron metal, YbCoZn, can be used for
adiabatic demagnetization refrigeration, which does not require 3He gas. A
number of advantages includes much better metallic thermal conductivity
compared to the conventional insulating refrigerants. We also demonstrate that
the cooling performance is optimized in YbScCoZn by
partial Sc substitution with 0.19. The substitution induces chemical
pressure which drives the materials close to a zero-field quantum critical
point. This leads to an additional enhancement of the magnetocaloric effect in
low fields and low temperatures enabling final temperatures well below 100 mK.
Such performance has up to now been restricted to insulators. Since nearly a
century the same principle of using local magnetic moments has been applied for
adiabatic demagnetization cooling. This study opens new possibilities of using
itinerant magnetic moments for the cryogen-free refrigeration
- âŠ