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In cases of suspected scaphoid fracture where the initial radiographs are negative, a supplementary MRI, or alternatively CT, should be carried out within three to five days. Fracture classification, assessment of dislocation as well as evaluation of fracture healing is best done on CT with reconstructions in the coronal and sagittal planes, following the longitudinal axis of the scaphoid. After a
The acceleration of developing magnesium alloys for biomedicine requires the advancement of experimental methods evaluating their performance. We have been developing an advanced immersion testing method for the assessment of biomedical Mg alloy degradation in aqueous environments. It is based on the combination of isothermal calorimetry with pressure measurement in the reaction cell. Such a combi
I dagens samhälle med klimatförändringar och miljöproblem ses cykeln som ett allt viktigare transportmedel för att minska bilanvändning. Trafikverket konstaterade att ökad cykling medför stora vinster för samhället, inte minst för miljön. Således borde cykel prioriteras allt mer i planeringen, vilket inte alltid görs. Hur man planerar cykelinfrastruktur och vad som klassas som bra eller dålig cyke
Enterococcus faecalis cells are known to have ferric reductase activity and the ability to transfer electrons generated in metabolism to the external environment. We have isolated mutants defective in ferric reductase activity and studied their electron transfer properties to electrodes mediated by ferric ions and an osmium complex modified redox polymer (OsRP), respectively. Electron transfer med
Prospects to use III-V technology to increase the performance of key millimeter wave circuits are discussed. We use 60 GHz wavelet generators to form coherent pulses with controllable pulse lengths down to 25 ps under low-power operation. The transmitters are used to demonstrate transmission at high data rates and very low bit-error-rates with simple modulation schemes (OOK) in direct links over s
Populärvetenskaplig sammanfattningEn stor del av världens energikällor är baserade på förbränning och kan återfinnas i allt från bilar och båtar som drivs av förbränningsmotorer till gasturbiner och kraftverk som används till elproduktion. Den centrala biten inom förbränning är en kemisk omvandling av bränslet då det reagerar med syre till att bilda de två huvudsakliga produkterna, vatten och koldAbstractThe work presented in this thesis is mainly focused on the development andapplication of infrared laser-induced grating techniques in order to measure the gasphase temperature and species concentrations in reactive flows. The two techniquesused for this purpose are laser-induced grating spectroscopy (LIGS) and degeneratefour-wave mixing (DFWM). Their coherent nature allows to perform laser
Epi is a humanoid robot developed by Lund University Cognitive Science Robotics Group. It was designed to be used in experiments in developmental robotics and has proportions to give a childlike impression while still being decidedly robotic. The robot head has two degrees of freedom in the neck and each eye can independently move laterally. There is a camera in each eye to make stereovision possi
Cerebrospinal fluid analyses and neuroimaging can identify the underlying pathophysiology at the earliest stage of some neurodegenerative disorders, but do not have the scalability needed for population screening. Therefore, a blood-based marker for such pathophysiology would have greater utility in a primary care setting and in eligibility screening for clinical trials. Rapid advances in ultra-se
Biogas production from wheat straw is one strategy of converting biomass to bioenergy, but pretreatment of the lignocellulosic material is necessary in order to render the substrate biodegradable. In this study, four different mechanical pretreatments of wheat straw were investigated: roll milling, extrusion, pelletization, and hammer milling. The effects of the pretreatments on anaerobic digestio
De små gårdarna är allvarligt hotade och därmed också mosaiklandskapet och den gastronomiska mångfalden. Det skriver flera debattörer.
Currently there is an ongoing push towards a circular economy. Governments, the EU, green NGOs, think-tanks, companies and their industry organizations are all advocating more circular solutions meaning that the current linear take-make-use-lose model of consumption should be replaced with a reuse-repair-recycle circular model. The circular economy is being heralded as one of the main, if not the
Pancreatic cancer has the highest mortality amongst all major organ cancers. Early detection is key to reduce deaths related to pancreatic cancer. However, early detection has been challenged by the lack of non-invasive biomarkers with enough sensitivity and specificity to allow for screening. The gold standard is still carbohydrate antigen (CA 19-9), against which all new biomarkers must be evalu
In this paper, a novel cognitive architecture for action recognition is developed by applying layers of growing grid neural networks. Using these layers makes the system capable of automatically arranging its representational structure. In addition to the expansion of the neural map during the growth phase, the system is provided with a prior knowledge of the input space, which increases the proce
