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The vibrational stability of a horizontally deflecting double-crystal monochromator (HDCM) is investigated. Inherently a HDCM will preserve the vertical beam stability better than a `normal' vertical double-crystal monochromator as the vibrations of a HDCM will almost exclusively affect the horizontal stability. Here both the relative pitch vibration between the first and second crystal and the ab
Johan Lindgren introduces fossil pigments.
Bacterial genomes typically consist of a single chromosome and, optionally, one or more plasmids. But whole-genome sequencing reveals about ten per-cent of them to be multipartite, with additional replicons which by size and indispensability are considered secondary chromosomes. This raises the questions of how their replication and partition is managed without compromising genome stability and of
Time-resolved experimental techniques are increasingly abundant at storage ring facilities. Recent developments in accelerator technology and beamline instrumentation allow for simultaneous operation of high-intensity and timing-based experiments. The MAX IV facility is a state-of-the-art synchrotron light source in Lund, Sweden, that will come into operation in 2016. As many storage ring faciliti
Vi vet att laddade partiklar sänder ut elektromagnetisk strålning då de tvingas följa en krökt bana. Denna strålning kallas synkrotronstrålning, och upptäcktes i mitten av 1900-talet. Sedan dess har denna typ av strålning funnit tillämpningar inom flera forskningsområden såsom kemi, biologi, medicin och materialvetenskap. För att uppfylla de växande kraven på vissa strålningsegenskaper, är partikeIn this thesis several aspects related to a new generation of storage ring light sources are discussed. Due to a reduction of electron beam emittance, fourth generation storage rings provide synchrotron radiation sources close to the diffraction limit at X-ray wavelengths. This results in a significant increase in photon brightness that is beneficial in a variety of synchrotron radiation based exper
Background: Recent research has shown that acoustic white noise (80 dB) can improve task performance in people with attention deficits and/or Attention Deficit Hyperactivity Disorder (ADHD). This is attributed to the phenomenon of stochastic resonance in which a certain amount of noise can improve performance in a brain that is not working at its optimum. We compare here the effect of noise exposu
The gender pay-gap is not a new phenomenon in Brazil. Since the increase of female participation on the labor market, the gap has remained a persistent problem that has generated a wide range of studies on the topic. The Human Capital Theory argues that individuals’ education and on-the-job experience are essential determinants on wage estimations. This assessment is not disputed in the literature
The move 'outside' of the concert hall has repercussions for listening and creative practice beyond simply resituating 'music'. The building of an environmentally specific instrumentarium draws on in situ exploration and cultivation of affordances, but also on the embodied pre-existent knowledge of the artists concerned. A sense of space/place and strategies of listening work together both to situ
I will take a recent CD-project as point of departure, a collaboration with the Turkish composer and electronic musician Erdem Helvaciolu. We did a series of recording sessions in Istanbul in December 2009 for which we agreed to use the Turkish makam as common point of departure in all the pieces. In this paper I will discuss the resistance of this material and specifically the relation between th
This paper discusses the soundscape of Hanoi and of the countryside north of Hanoi in the Bac Ninh province with the experience of the two authors as artists in two collaborative projects, Arrival Cities: Hanoi and Que/Homelands. The content is structured in three layers, a conversation between the two authors on their individual experience of the projects, a jointly written text which takes a mor
With the MAX IV project in Lund, Sweden, an ultralow emittance storage ring light source is going into user operation in 2016. Due to its multibend achromat lattice designthe 3 GeV storage ring reaches a horizontal emittance lower than 330 pm rad. Emittance diagnostics will involve two diagnostic beamlines to image the electron beam with infrared and ultraviolet synchrotron radiation from bending
