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The aim of the current study was to examine effects of daily temperature variations on the performance of anaerobic digestion. Forced square-wave temperature variations (between 11 and 25, 15 and 28, and 19 and 32 degrees C) were imposed on a bench-scale digester using a mixture of llama-cow-sheep manure in a semi-continuous process. The volumetric biogas production rate, methane yield, and the vo
Bees are mostly active during the daytime, but nocturnality has been reported in some bee families. We studied temporal flight activity in three species of carpenter bees (genus Xylocopa) in relation to light intensities. X. leucothorax is diurnal, X. tenuiscapa is largely diurnal being only occasionally crepuscular, while X. tranquebarica is truly nocturnal. Occasional forays into dim light by X.
During the last decade, numerous studies of the internet's civic dimensions have taught us a considerable amount about the form of new technologies. They have, for instance, analysed how the internet's interactive character, its multimodality and its open character create civic opportunities, not least for young people. The field has, however, rather neglected a number of important issues. For ins
SIK2 (salt-inducible kinase 2) is a member of the AMPK (AMP-activated protein kinase) family of kinases and is highly expressed in adipocytes. We investigated the regulation of SIK2 in adipocytes in response to cellular stimuli with relevance for adipocyte function and/or AMPK signalling. None of the treatments, including insulin, cAMP inducers or AICAR (5-amino-4-imidazolecarboxamide riboside), a
The author examines the intriguing mention of “those who curse Yamm” and “rouse Leviathan” in Job 3:8, and tries to relate these expressions to Near Eastern religious history. The old assumption that two texts inscribed on Aramaic incantation bowls indicate the full background of these expressions is challenged, and further evidence is sought in texts such as the Enuma Elish, the Gnosticizing “Hym
There is an urgent need for biomarkers in plasma to identify Alzheimer's disease (AD). It has previously been shown that a signature of 18 plasma proteins can identify AD during pre-dementia and dementia stages (Ray et al, Nature Medicine, 2007). We quantified the same 18 proteins in plasma from 174 controls, 142 patients with AD, and 88 patients with other dementias. Only three of these proteins
INTRODUCTION: Cluster headache (CH) is a primary headache by definition not caused by any known underlying structural pathology. However, symptomatic cases have been described. The evaluation of CH is an issue unresolved. CASE REPORT: A 41-year-old man presented with a 3-month history of side-locked attacks of excruciating severe stabbing and boring right-sided pain located in the temple and the
Kallander H. 2011. Fishing flocks of Great Crested Grebes Podiceps cristatus consist of breeding birds. Ardea 99: 232-234. This note corrects a statement made in an earlier note on flock-fishing Great Crested Grebes Podiceps cristatus at the South Swedish Lake Krankesjon, namely that the flocks presumably consisted mainly of non-breeders. This has been proved wrong. The majority come from a loose
Galloway-Mowat syndrome (GMS) is a rare autosomal recessive disorder characterized by early onset nephrotic syndrome and microcephaly with various anomalies of the central nervous system. GMS likely represents a heterogeneous group of disorders with hitherto unknown genetic etiology. The clinical phenotype to some extent overlaps that of Pierson syndrome (PS), which comprises congenital nephrotic
A building-integrated multifunctional PV/T solar window has been developed and evaluated. It is constructed of PV cells laminated on solar absorbers placed in a window behind the glazing. To reduce the cost of the solar electricity, tiltable reflectors have been introduced in the construction to focus radiation onto the solar cells. The reflectors render the possibility of controlling the amount o
Using the latest available data, this brief article attempts to provide the first regional decomposition analysis of CO2 emissions from fuel combustion. Covering eight regions of the world, determinants are estimated in relative and absolute terms for the period 1971-2010. We use the unparalleled 2010 global surge in CO2 emissions as a reference and entry point for the analysis. Overall, results s
A discussion about biographical methods and a comparision between my biography of Oscar I, swedish king 1844-1859, and my biographies of women in the 1900-th century.
Recension av Carina Renander; Förförande fiktion eller historieförmedling? Arn-serien, historiemedvetande och historiedidaktik
Edge aliasing continues to be one of the most prominent problems in real-time graphics, e.g., in games. We present a novel algorithm that uses shared memory between the GPU and the CPU so that these two units can work in concert to solve the edge aliasing problem rapidly. Our system renders the scene as usual on the GPU with one sample per pixel. At the same time, our novel edge aliasing algorithm
Hypoxia, or deficient oxygen levels, is an inherent feature of rapidly expanding tumor tissue. In order to survive in the hostile, hypoxic environment and to restore the supply of oxygen and nutrients tumor cells activate a variety of adaptive mechanisms. Among them, hypoxia-induced angiogenesis, i.e. the formation of tumor blood vessels from pre-existing vasculature, has proved to be of critical
Popular Abstract in Swedish Tack vare den snabba tekniska och digitala utvecklingen under senare år har tomosyntes etablerats som ett nytt och spännande verktyg inom röntgendiagnostiken. Metoden är en vidareutveckling av gammaldags tomografi (skiktröntgen), men är lättare att utföra, ger bättre bilder och dessutom är stråldosen betydligt lägre. Vid tomosyntes gör röntgenröret ett svep över den krThe aims of this thesis were to investigate whether chest tomosynthesis might be used in pulmonary cystic fibrosis, to design and validate a tomosynthesis scoring system, and to determine the effective dose from chest tomosynthesis in children. In a prospective study starting in 2008 clinical chest radiography or computed tomography (CT) were supplemented with a tomosynthesis examination of the l
