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On Premixed Gas Fuelled Stirling Engine Combustors with Combustion Gas Recirculation

Popular Abstract in Swedish I föreliggande arbete har användandet av recirkulation av förbränningsgaser vid mager förblandad förbränning undersökts och testats i gaseldade Stirlingmotorbrännkammare. Ett förbränningssystem med en flamhållare av flamstoppstyp där man använder en ejektor för att recirkulera förbränningsgaser och för att förblanda bränsle och luft har konstruerats och provats i motortThe main objective in the research described in this thesis was to design and test the use of lean premixed combustion using combustion gas recirculation for gas fuelled Stirling engine combustors. A system using a flame-arrester type of flame-holder to stabilize the flame and an ejector system for the recirculation of combustion gas was designed and tested in the laboratory. The impact of changes

Electromagnetic Decay Strengths in the Isobars 89Nb, 89Mo and 89Tc

Lifetimes of high spin states in the three A = 89 isobars Nb-89, (89)MO and (TC)-T-89 have been measured via the Recoil Distance Doppler Shift technique and the fusion evaporation reactions Ni-58(Cl-35, xnypz alpha) at 120 MeV beam energy. Reduced transition probabilities for about 50 gamma transitions were extracted. The experimental branching ratios in Mo-89 and reduced transition probabilities

Discriminating Depressive Patients and Patients with Somatoform Disorders by Means of the Beck Depression Inventory (BDI).

Ninety-eight patients, 56 suffering according to DSM-IV of unipolar depression and 42 of somatoform disorders, were compared on the Beck Depression Inventory (BDI) total scale, the subscale of Somatic complaints and the Cognitive-affective subscale. A factor analysis performed on the total group revealed five factors used to determine new subscales: Depressed mood, Somatic manifestations, Loss of

Intervju med Jan Troell

Intervju med Jan Troell om hans filmkarriär, berättarteknik och särskilt hans då aktuella film Så vit som en snö

Phragmites australis and silica cycling in tidal wetlands

Tidal marshes have recently been shown to be important biogenic Si recycling surfaces at the land-sea interface. The role of vegetation in this recycling process has not yet been quantified. In situ and ex situ decomposition experiments were conducted with Phragmites australis stems. In a freshwater tidal marsh, litterbags were incubated at different elevations and during both winter and summer. B

Improved oscillator strengths and wavelengths for Os I and Ir I, and new results on early r-process nucleosynthesis

The radioactive decay of 238U and 232Th has recently been used to determine ages for some of the oldest stars in the Universe. This has highlighted the need for accurate observational constraints on production models for the heaviest r-process elements which might serve as stable references, notably osmium and iridium. In order to provide a firmer basis for the observed abundances, we have perform

Manorial economy and corvee labour in southern Sweden 1650-1850

This essay is an inquiry into manorial production in Scania. Its growth was dependent on the long-term development of European grain prices. When prices increased landlords were encouraged to put more land under the plough. The estates' main income came, to an increasing extent, from demesne production, which finally dominated the income profile. The peasants' most important contribution to the la

Hur dör djur?

When mourning pets, costoms and rituals are in many ways similar to what is used for humans. Whether one likes it or not, the market for pets, dead or alive is an expanding and lucrative one.

Fungus gnats (Diptera: Bolitophilidae, Diadocidiidae, Ditomyiidae, Keroplatidae and Mycetophilidae) from Møre og Romsdal.

Faunistic data on fungus gnats from the county of Møre og Romsdal in Norway are presented and all species known from the county are summarized in a checklist. Treatment of some 23000 specimens, collected with one Malaise trap and one window trap for a whole year each, resulted in the identifi cation of 315 species from a single site at Jordalsgrend, Sunndal municipality. Material from three other

Analysis of the interleukin-1 and interleukin-6 polymorphisms in patients with chronic periodontitis. A pilot study

The aim of this study was to analyse whether the interleukin-1 (IL-1) and IL-6 gene polymorphisms were associated with the susceptibility of chronic periodontitis. Genomic DNA was obtained from 20 patients with chronic periodontitis and 31 periodontally healthy subjects. All subjects were of North European heritage. The test subjects were kept in a maintenance program after periodontal treatment b

Från Rudbeck till Mandelbrot : Identifikation, imitation och komparation i nutidsvetenskap

InledningDet är kväll den 15:e januari 2004. Idag var det den andra dagen i Mijailovic-rättegången i Stockholms tingsrätt. Mijailovic försvarar sig, men inte genom att svara på frågor. Han representerar det moderna. Hans psykos, säger han, fick honom att få panik, höra röster och döda en utrikesminister. Om han fått träffa en läkare skulle allt varit annorlunda. Sedan början av 1800-talet har dett