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Visual cues provide an important means for aerial creatures to ascertain their self-motion through the environment. In many insects, including flies, moths, and bees, wide-field motion-sensitive neurons in the third optic ganglion are thought to underlie such motion encoding; however, these neurons can only respond robustly over limited speed ranges. The task is more complicated for some species o

Trots att PBL betraktas som ett kraftfullt verktyg i undervisningen, råder fortfarande viss tvekan att den skulle vara lämplig i alla utbildningar. Ett annat problem som också diskuteras är om PBL går att tillämpas på stora grupper och i så fall om den är lönsam. I tekniska utbildningar är teknologerna oftast vana vid att ha föreläsningar, övningar och laborationer. Som stöd har man ett genomarbet

Popular Abstract in Swedish Bakgrund: Öroninflammation är vanligt förekommande i barnaåren. De flesta barn har haft minst en episod med akut varig öroninflammation (AOM) och/eller en period med vätska i mellanörat (SOM) före skolstart. De flesta får enstaka episoder, frekvensen av AOM avtar i 2-års åldern och frekvensen av SOM avtar före skolstart. Efter en AOM episod är det vanligt att man under Objective: Most preschool children have suffered from at least one episode of acute otitis media (AOM) and/or secretory otitis media (SOM). Some children have frequent AOM episodes and/or prolonged and recurrent episodes of secretory otitis media (SOM). The long-term out-come and sequelae are not fully clarified. Subjects and methods: Out of a birth cohort followed to the age of 3 years, 12 child

When ferrochromium is produced at Vargon Alloys AB (Vargon, Sweden), an offgas dust is generated as a byproduct. A leachate that contains hexavalent chromium (Cr6+) is formed when rainwater percolates through the dust deposit. In this study, Cr6+ in the leachate was reduced to trivalent chromium (Cr3+) by biological treatment in a biofilm process operated under anaerobic conditions. The reactor vo

A fully integrated 0.6 V VCO for the GPS L1 band is realized in a 90 nm RF-CMOS process. The purpose of the design is to demonstrate how suitable deep submicron CMOS transistors are for ultra low voltage, low power oscillator design. The VCO operates at 6.3 GHz and a divide-by-four circuit buffer provide the wanted 1575.42 MHz signal. Measured phase noise is for a 0.6 V supply voltage and bias cur

Passive exposure to tobacco smoke was assessed in children with asthma (age 3-15) and in referents. There was statistically significantly (P less than 0.0005) higher excretion of the nicotine metabolite, cotinine, in the urine of 49 children with asthma (geometric mean 10 ng/ml) compared with 77 referents (4.8 ng/ml). Maternal smoking was statistically significantly more prevalent among the asthma

The process simulator ASPEN PLUS was used for simulation of an ethanol production process based on enzymatic hydrolysis of lignocellulosic materials. Various process configurations were studied to increase the overall yield of ethanol and to reduce the energy consumption in the process. An increased utilization of the pentosan fraction was achieved by a complex recycling of streams in the process.

Popular Abstract in Swedish Avhandlingens delstudier omfattar kvantitativa och kvalitativa data rörande en grupp tonåringar och unga vuxna med dyslexi. Såväl kognitiva som psykosociala faktorer undersöktes. Gruppen bestod av 75 ungdomar mellan 14 och 25 år som fick diagnosen dyslexi någon gång mellan 1994 och 1999. Datainsamlingen genomfördes 2003 - 2004. Intervallet mellan diagnostillfället och uThe studies in this doctoral thesis report aspects of cognitive and socio emotional development in a group of teenagers and young adults with dyslexia. The 75 subjects, between 14 and 25 years of age, had been diagnosed in the latter half of the 1990s, and the collection of quantitative and qualitative data was performed in 2003-04. Study I investigated the stability of intelligence. Earlier rese

3-phosphoglycerate-dehydrogenase (3-PGDH) deficiency is an L-serine biosynthesis disorder, characterised by congenital microcephaly, severe psychomotor retardation, and intractable seizures. We report prenatal diagnosis of an affected fetus by DNA mutation analysis. Ultrasound assessment showed a reduction in fetal head circumference from the 75th percentile at 20 weeks' gestation to the 29th perc

We measured πΣ invariant mass spectra below and above the K̄N mass threshold in the K-d → NπΣ reaction in order to study the K̄N interaction and the Λ(1405) resonance. This reaction can be described by the two-step process: (i) K-N1 → K̄N followed by (ii) K̄N2 → πΣ, where N1 and N2 are nucleons bound in the deuteron. We deduced the S -wave scattering amplitude of K̄N → K̄N as well as K̄N → πΣ in I

This study uses a specifically constructed sub-national dataset on Ebola Virus Disease (EVD) outbreak cases, deaths, and CFR in order to look at the question of how important various socio-economic factors were in determining the intensity and severity of the 2013-2016 EVD outbreak in Guinea, Liberia, and Sierra Leone. The results of the OLS model shows that the socio-economic conditions in differ