Popular Abstract in Swedish Multikonjugerad Adaptiv Optik för Astronomiska Teleskop 1. Atmosfärisk turbulens Allt sedan man på 1600-talet började bruka optiska instrument inom astronomin, för att understödja det mänskliga ögat då man beskådade stjärnhimlen, har astronomer strävat efter att bygga allt större och bättre teleskop för att kunna se längre ut i rymden och skönja allt ljussvagare objekt.This work analyses several aspects of multi-conjugate adaptive optics (MCAO) for astronomy. The research ranges from fundamental and technical studies for present-day MCAO projects, to feasibility studies of high-order MCAO instruments for the extremely large telescopes (ELTs) of the future. The first part is an introductory exposition on atmospheric turbulence, adaptive optics (AO) and MCAO, esta

In order to study nanoparticles in an efficient way, new characterization methods has to be developed in parallel with the efforts to develop new preparation methods. One such characterization method is cryo-transmission electron microscopy (cryo-TEM) which gives the possibility to image nanoparticles as they are in solution. The particle-containing solution is plunge-frozen, creating a thin froze

The first part of Syntax of the Modern Greek Verbal System(second thoroughly revised edition) deals with the grammatical categrories of verbs (voice, aspect etc.) and the use of each verbal form (ëýíù, ëýóù, Ýëõíá, Ýëõóá, imperatives etc.). The second part deals in detail with the functions of the particles èá, áò and especially õá. Two brief final chapters cover indirect speech and the use of the

Bioenergy is booming around the world and with the expansion comes exciting opportunities and some disturbing risks. Learning about bioenergy – from technologies, to resources, to policies – is important to the success and sustainability of the bioeconomy. This interactive guide for school students (16-18 years) and teachers opens the door to understanding and engaging in the transition from the f

Om författaren Vilhelm Moberg och hans syn på filmmediet.

Abstract is not available

Popular Abstract in Swedish Denna avhandling undersöker förutsättningarna för att stoppa nedbrytning av benvävnad med hjälp av bifosfonater i några ortopediska problemsituationer. Bifosfonater är en relativt ny grupp av läkemedel som hämmar nedbrytning av benvävnad. De binder effektivt till benmineral och i praktiken förblir de inbundna i skelettet tills benmineralet upplöses. Bifosfonater finns iProsthetic loosening, bone graft resorption and osteonecrosis are examples of problems in orthopedic surgery caused by or augmented by bone resorption. Bone resorption is caused by osteoclasts. Osteoclasts can be inactivated with biphosphonates, a drug in clinical use against osteoporosis and osteolytic tumors. The bone resorption-reducing ability of bisphosphonates was analyzed in rat models. An

The problem of determining the camera motion from apparent contours or silhouettes of curved three-dimensional surfaces is considered. In a sequence of images is shown how to use the generalized epipolar constraint on apparent contours. One such constraint is obtained for each epipolar tangency point in each image pair. Thus in theory the motion can be calculated from the deformation of a single c