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Build a linear accelerator to demonstrate spallation – the source of high-energy neutrons used by the new European Spallation Source being built in Sweden.In this activity, we build a model of a linear accelerator (linac) called a Gauss cannon. It uses magnetic attraction and momentum transfer to accelerate a series of steel balls, representing protons. At the end of the track, one ‘proton’ will c

Beads made from animal teeth were an important form ofdecoration among hunter-gatherer societies in Northern Europe.The analyses presented in this paper are based on questionsregarding the design of the beads, the choice of animal teeth,their placement on the costume, and the exchange of beads. Forthese analyses, two sites with partly different conditions have beenselected, one located in northernBeads made from animal teeth were an important form of decoration among hunter-gatherer societies in Northern Europe. The analyses presented in this paper are based on questions regarding the design of the beads, the choice of animal teeth, their placement on the costume, and the exchange of beads. For these analyses, two sites with partly different conditions have been selected, one located in no

The contribution of the understorey vegetation to the spectral reflectance from the top of a forest canopy was investigated by the use of a forest canopy reflectance model. Detailed field data, i.e. forest leaf area index (LAI), tree structural parameters like the height, diameter and crown length of the trees, and the composition, distribution and reflectance of the forest floor, was collected fo

Botaniker donerar varje år tusentals pressade växter till Lunds universitets biologiska museum. Ibland handlar det om nyheter i Sveriges vilda flora. Nya för år 2020 är exempelvis prärielök, brittsommaraster och rosenfibbla.

Summary Systematic process triage quickens the treatment of the most sick patients Ugeskr Læger 2011;173(40):2490-2493 Systematic process triage is a relatively unknown concept in Denmark. Currently there are no national recommendations regarding triage models for use in the emergency department (ED). Four medium-sized EDs from different regions across the country cooperated in a joint venture to

A parapineal organ was found to be present in 21 teleost fishes belonging to 20 different families, but was absent in poecilids and cyprinodontids. The parapineal organ was situated on the left side of the brain and sent a nerve tract to the left habenular nucleus, except in Gadus, where a “parapineal organ” appeared to send a nerve tract into the pineal stalk. The parapineal organ of adult Gaster

Background. Over five billion people worldwide lack access to safe and affordable surgery and anesthesia care when required. There is a critical unmet need for surgical care, especially in low-income and middle-income countries (LMICs). The shortage of surgical providers is one of the most influential barriers to receiving surgical care, and the maldistribution is aggravated by doctors emigrating

A glimpse into a better world: The 4th Symphony Concert C with the world-class trumpeter Håkan Hardenberger and Jörg Widmann, the principal guest conductor of the NDR Radio Philharmonic, is about nothing less.While the warlike tones in Felix Mendelssohn Bartholdy's "Scottish" symphony finally give way to a roaring hymn of joy, Jörg Widmann's "Towards Paradise" strives for a utopian state of limbo.