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Histamine and chromogranin A-derived peptides in rat stomach ECL cells

Popular Abstract in Swedish ECL-cellen är en hormonproducerande cell i magslemhinnan. Den utsöndrar histamin vilken i sin tur reglerar magsäckens saltsyrautsöndring. I avhandlingen utvecklades en metod som möjliggör mätningar av histaminutsöndringen från ECL-celler i vakna råttor. Metoden bygger på att ett semipermeabelt membran opereras in i magslemhinnan varpå histamin och andra substanser som fThe ECL cells constitute the predominant endocrine cell population of the stomach. They secrete histamine which is a major stimulator of acid secretion. Chormogranin A (CgA)-derived peptides, such as pancreastatin, are co-secreted with histamine. In this thesis it was demonstrated that pancreastatin may serve as a reliable marker for ECL cell secretory activity in the rat. The function of pancreas

Blodig Pedagogik. Genus och våld i nationalistisk barn- och ungdomslitteratur.

This text is analysis of the use of violence in children's literature, specifically in the works of Penelope Delta (1874-1941), a Greek author. The analysis is concentrating of how violence is gendered and how nation and the experience of nation is gendered. It challanges the notion that nation and nationalism is a masculine discourse since Delta's use of violence is directed to both boys and girl

Turbulent flow in a ribbed channel analysed by the proper orhtogonal decomposition

Particle image velocimetry (PIV) measurements and proper orthogonal decomposition (POD) are used to explore the turbulent structures in a ribbed channel. In this study, only one channel wall is equipped with square ribs which are oriented transversely to the main stream direction. The ribs obstruct the channel by 20% of its height and are arranged 10 rib heights apart. The results include mean str

Quantifying the quality of medical x-ray images. An evaluation based on normal anatomy for lumbar spine and chest radiography.

Popular Abstract in Swedish Det är sedan länge känt att för samma bildkvalitet kan patientstråldosen variera kraftigt mellan två olika sjukhus för en och samma röntgenundersökning. Det finns ett stort utrymme för sänkning av patientstråldosen utan att undersökningens kvalitet påverkas. Vid optimering inom röntgendiagnostik balanseras patientstråldos mot bildkvalitet. Optimeringen kräver att man haOptimisation in diagnostic radiology requires accurate methods for determination of patient absorbed dose and clinical image quality. Simple methods for evaluation of clinical image quality are at present scarce and this project aims at developing such methods. Two methods are used and further developed; fulfilment of image criteria (IC) and visual grading analysis (VGA). Clinical image quality de

Structural Mechanics: Modelling and Analysis of Frames and Trusses

This textbook in structural mechanics is based on the methodology of the finite element method. The understanding of basic elements of structural mechanics - springs, bars, beams and foundations - is gradually built up in one, two and three dimensions. Using these elements it is demonstrated how complex load-bearing structures can be modelled and analysed. Methods for linear as well as geometric a