Sökresultat

This thesis examines how freshwater crayfish affect community interactions in benthic food webs. I have mainly studied the influence of the introduced signal crayfish (Pacifastacus leniusculus) on littoral communities, but also the influence of the native noble crayfish (Astacus astacus). Overall, the results show that both crayfish species are omnivores having strong direct and indirect effects o

ABSTRACT The existence of sound symbolic and mimetic words in the Japanese language is well known. Although the most common appearance of these sound symbolic words occurs in Japanese comics they do exist in many other forms of media, ranging from television shows to everyday conversation. These words, a very good tool for the native Japanese speaker to convey intimate meanings and sensations, po

Starch, comprised of amylose and amylopectin, is a very complex biopolymer. Different methods are therefore needed for the investigation of the molecular structures of amylose and amylopectin. In this thesis analytical methods have been developed and various techniques were combined for the characterisation of starch. Microdialysis was used for sampling and sample clean-up coupled on-line with ani

The xanthophyll cycle involves the light-dependent and reversible conversion of violaxanthin to zeaxanthin. Zeaxanthin has been implicated in the protection of the photosynthetic machinery from over-excitation. The enzyme violaxanthin de-epoxidase catalyses the conversion of violaxanthin to zeaxanthin. The enzyme is located in the thylakoid lumen and its activity is strictly pH controlled. Apart f

As more and more focus is put on the environmental questions and the request for cleaner transportation the demand on the vehicles increases. Especially the environmental request of the public transportation that is visible to the public and operates in the centre of the city. The demand on the buses used for public transportation will increase. The whole bus must be optimised, usually only the pr

Various forms of stress, such as biotic and abiotic stress, were studied in microorganisms and plants to learn more about the underlying mechanisms of such stress and potential genetic engineering strategies towards stress tolerance. An antifreeze protein from winter flounder, expressed in E. coli, was subjected to directed evolution with NaCl as selective pressure. The resulting clones were teste

The dynamic instability and related problems when turning high chromium cast iron (HCCI) with two polycrystalline cubic boron nitride (PCBN) tools in wide range of cutting speeds and feed rates were studied in the article. The tool wear mechanisms and specifics for both tools as a main criterion of appearance of process instability were investigated. In spite of the chatter-like surface of machine

This manuscript presents an reconfigurable architecture, suitable to process time synchronization for multiple OFDM standards. The proposed architecture is based on a coarse-grained reconfigurable cell array, and the different radio standards under analysis are IEEE 802.11n, 3GPP Long Term Evolution and Digital Video Broadcast for cellular devices. With the use of a 2-by-2 cell array, composed of

Force feedback (FF) devices will bring us new ways to interact with computers. The game industry is starting to create sophisticated devices that enable users to feel virtual objects and movements. For people with visual disabilities, this might be even m

Professor Kontaktinformation E-post: erika [dot] andersson_cederholm [at] ses [dot] lu [dot] se Telefon: +46 42 35 66 09Organisation Institutionen för tjänstevetenskap WebbplatsErika Andersson Cederholms profil i Lunds universitets forskningsportalMin forskning fokuserar på relationer och interaktioner i arbetsliv och verksamheter där gränserna mellan arbete och fritid, det formella och informella

https://www.ses.lu.se/erika-andersson-cederholm - 2026-05-02