Popular Abstract in Swedish Ett flertal produkter som framställs inom den kemiska och biotekniska industrin produceras i stora turbinomrörda tankar. Kvaliteten av produkten och utbytet av processen påverkas av blandningsförhållandena i dessa tankar. Blandningsförhållandena i processen påverkas av vätskans hastighet och dess intensitet. I olika regioner av reaktorn, impeller regionen och bulk regiTurbine-agitated tanks are used in chemical and biochemical applications to increase mixing which, in turn, affects the yield, productivity and product quality. The purpose of this work was to study the hydrodynamic influence on the scale-up of turbine-agitated tanks, commonly used in fermentation. Local turbulent flow parameters, the turbulent kinetic energy and the local energy dissipation rate,

As custom architectures become more and more common for DSP applications, instruction selection and scheduling for such applications and architectures become important topics. In this paper, we explore the effects of defining the problem of finding an optimal instruction selection and scheduling as a constraint satisfaction problem (CSP). We incorporate methods based on sub-graph isomorphism and g

In this thesis the evolution and consequences of multiple queen societies (polygyny) in leptothoracine ants are discussed. The majority of the studies have been conducted on the boreal species Leptothorax acervorum, but polygynous behaviour is also discussed in a broader sense concerning ant species in general. In L. acervorum the intra-colony relatedness is high. Relatedness in monogynous colonie

The focus of this thesis is on the calculation of potential energy surfaces and on the study of vibrational properties. For example: - We have developed a new method for calculation of Franck-Condon factors. - We have calculated full energy surfaces of the ground (X2A’) the excited (B2A’) states of the formyl radical. These surfaces have been used to study the hydrocarbon flame bands of the B2A’

Johan Jakob Borelius var professor i teoretisk filosofi vid Lunds universitet från 1866-1898. Boken belyser den syn på filosofin som Borelius gav uttryck för när han tillträdde sin professur. Vidare ges en inblick i hans trettioåriga verksamhet som professor. Särskilt utrymme ägnas åt Borelius syn på motsägelsesatsens innebörd och giltighet, liksom det stora verket "Metafysik" som han arbetade på

Biografisk artikel om Elsa Collin (1887-1941), kvinnlig studentpionjär, skådespelerska, poet, teaterkritiker etc.

Popular Abstract in Swedish Gastroesofageal refluxsjukdom är ett tillstånd som kännetecknas av att magsyra åker upp i matstrupen (reflux). Reflux är ett normalt fenomen som förekommer hos alla individer utan att orsaka symtom eller vävnadsskador. Hur detta normaltillstånd utvecklas till ett sjukdomstillstånd är ej helt klarlagt. Reflux förhindras normalt av en barriär vid övergången mellan matstruThere is a persisting controversy concerning the definition, etiology and pathogenesis of Barrett's esophagus. The dramatic and parallel increase in the incidence of esophageal and junctional adenocarcinoma over the past decades justifies an evaluation of the pathophysiology of premalignant metaplastic changes of the esophagus and the gastroesophageal junction. Patients were evaluated with upper G

The chapter defines mimetic schemas as dynamic, concrete and preverbal representations, involving the body image, which are accessible to consciousness, and pre-reflectively shared in a community. Mimetic schemas derive from a uniquely human capacity for bodily mimesis (Donald 1991; Zlatev, Persson and Gardenfors 2005) and are argued to play a key role in language acquisition, language evolution a