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Models of community organization involve variations of the top-down (predator control) or bottom-up (nutrient limitation) hypotheses. Verbal models, however, can be interpreted in different ways leading to confusion. Therefore, we predict from first principles the range of possible trophic level interactions, and define mathematically the instantaneous effects of experimental perturbations. Some o
Radio-controlled model planes are useful when carrying out photography, especially from low altitudes, and meteorological soundings (air temperatures in boundary layers). Soundings were carried out with a system which stored the measured data on board the plane pending evaluation after the flight. The payload of the plane was a camera and equipment for measuring temperature and air pressure (altit
A graphic method was developed for presentation of the location and extent of the myocardium at risk in patients with acute myocardial infarction (AMI). This method is based on a mathematical processing of ST-segment deviations of standard 12-lead electrocardiogram following the concept of Titomir and Ruttkay-Nedecky in their dipolar electrocardiotopographic method. The center of the location of t
The solid-state phase behaviour of lyophilised n-dodecyl-beta-D-glucoside (beta-C(12)G(1)), n-dodecyl-beta-D-maltoside (beta-C(12)G(2)) and n-dodecyl-beta-D-maltotrioside (beta-C(12)G(3)) has been investigated by differential scanning calorimetry (DSC) and X-ray techniques. For beta-C(12)G(1), lyophilisation results in a formation of a crystalline anhydrate. The lamellar spacing (37 angstrom) is c
EPIC-Heart is the cardiovascular component of the European Prospective Investigation into Cancer and Nutrition ( EPIC), a multi-centre prospective cohort study investigating the relationship between nutrition and major chronic disease outcomes. Its objective is to advance understanding about the separate and combined influences of lifestyle ( especially dietary), environmental, metabolic and genet
We investigate a new method to place patients into risk groups in censored survival data. Properties such as median survival time, and end survival rate, are implicitly improved by optimizing the area under the survival curve. Artificial neural networks (ANN) are trained to either maximize or minimize this area using a genetic algorithm, and combined into an ensemble to predict one of low, interme
The modeling of industrial combustion applications today is almost exclusively based on two-equation turbulence models. Despite its known limitations, the most the widely used model is still the standard k-ε model. The objective of this paper is to investigate the performance of two-equation turbulence models applied to a confined swirling flow. Numerical modeling of an axis-symmetric confined sud
OBJECTIVE: To form a methodologic basis for DNA analysis of ductal carcinoma in situ (DCIS) and invasive carcinoma (IC) of the breast, including very small lesions, by comparison of flow cytometric (FCM) and image cytometric (ICM) methods for DNA quantitation. STUDY DESIGN: The material consisted of 41 DCIS lesions and 26 ICs. FCM DNA analysis of unfixed, frozen samples were compared to (1) FCM of
Value added tax (VAT) is a key part of the fiscal revenue of many countries. Yet this broad-based tax on consumer spending exempts financial services. This seems puzzling to many, particularly given the significance of that sector and the size of its value-added in today's world economy. The fact that the European Commission is currently reviewing the tax treatment of financial activities in the E
The acid-catalyzed rearrangement of 1,4,5,8-tetramethylnaphthalene was used to determine the acidity of media used for EPR spectral studies of radical cations. The radical cations of methyl-substituted naphthalenes were shown to undergo dimerization reactions. The apparent persistency of the radical cation of hexamethylbenzene was due to the slow oxidation when thallium(III) trifluoroacetate was
Delamination and spallation of thermal barrier coating (TBC) systems, used in hot parts of gas turbines, have been studied with respect to thermal fatigue. TBCs with and without pre-existing cracks were investigated. Thermal shock tests were performed until coating spallation. The experimental results revealed that the cracks primarily responsible for spallation grew horizontally, close to the int
In this chapter, we compare the class composition of four types of anti-austerity demonstrations—Occupy/Indignados, trade union, May Day and other anti-austerity protests—with “new social movement” demonstrations. This allow us to, firstly, scrutinize whether contemporary anti-austerity protests attract more participants from the lower classes—in particular the working class—than from the upper st
This paper describes the development of a method based on measurements of the radar cross section (RCS) in the forward direction to determine the extinction cross section for the 2.5 – 38 GHz frequency range. A conventional anechoic chamber designed for monostatic measurements is used for forward RCS measurements. The extinction cross section is then calculated from the measured forward RCS using
Popular Abstract in Swedish Reglering av celltillväxt och celldöd är mycket viktigt för bibehållandet av balansen mellan antalet olika celler i kroppen. Om regleringen rubbas kan olika sjukdomar uppkomma, som karakteriseras av för mycket celltillväxt eller av för mycket celldöd. Exempel är cancer, där man har för mycket tillväxt, samt många degenerativa sjukdomar som diabetes, Parkinsons och aids,
Popular Abstract in Swedish Många av de äldre patienterna som är inlagda på sjukhus eller som bor i särskilda boenden inom äldreomsorgen är idag undernärda. En sammanställning av Socialstyrelsen över svenska studier under de senaste 20 åren visade på en genomsnittlig frekvens av undernäring på 28%. Ett otillräckligt kostintag leder till undernäring. Kroniska sjukdomar är ofta en bakomliggande orsThe aim of this thesis was to develop and test the feasibility of a dietary record routine, where nursing staff assess the patient’s food and fluid intake based on standardised portion sizes and household measurements. The energy intake (EI) was studied with a dietary record in 61 geriatric patients. During the 6-month follow-up 11 patients died and an EI below median (1378 kcal) was associated w
Popular Abstract in Swedish Avhandlingen är en tematisk och historisk studie av Sjömans filmer och av hans betydelse för svensk filmkultur, framför allt under 1960- och 1970-talen. Sjöman är mest känd som filmregissör. År 1962 hyllades debutfilmen Älskarinnan av kritikerna. Sjöman sågs som föregångare till en ny våg i svensk film. Genom debatten efter filmcensurens totalförbud av 491 (1964) kom Sj
PURPOSE: To analyze the visual outcome after cataract surgery. SETTING: Cataract surgery clinics in 15 European countries. DESIGN: Database study. METHODS: Data were drawn from case series of cataract extractions reported to the European Registry of Quality Outcomes for Cataract and Refractive Surgery database. These data were entered into the database via the Web by surgeons or by transfer from e
