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It is shown that four point resistivity measurements can be used to detect decay in living trees. A low frequency alternating current is injected into the trunk and the induced voltage is measured between two points along the trunk. With additional measurement of the cross section area, the effective resistivity of the trunk is estimated. A comparison within a group of trees shows that trees in de
In this paper I consider whether eudamonism—i.e. the thesis that the ultimate aim of human life and conduct is the attainment of happiness and that the achievement of this goal is closely linked to the acquisition and exercise of moral virtue and tranquillity of the soul—could serve as a framework for a theory of rights. I argue that the eudaimonist’s chances to ground a theory of rights from with
”Vad ska vi äta ikväll?” är en frekvent förekommande fråga i många hushåll. I familjer med yngre barn är måltiden ofta en särskilt prioriterad aktivitet. Det handlar inte bara om att säkerställa att barnen får i sig mat, många andra ideal cirkulerar kring måltiden. Gemenskap ska skapas, barn ska uppfostras och en näringsriktig, varierad och inte allt för kostsam måltid ska serveras. Samtidigt mata
The mechanisms of loosening in total hip arthroplasty (THA) and the role of polyethylene (PE) wear debris in this process is unclear. Radiographic measurements showed that THA with 32 mm heads have about 3 times greater volumetric wear than those with 22 mm heads. If PE debris were the main cause of loosening, then there should be an obvious difference in revision rates between the prostheses with
