Filtyp
The following text addresses the ecological and cultural significance of the threats affecting the honey-bee, and which are becoming apparent through the unusual and sometimes drastic death rates of bee colonies. General research conducted on this problem largely agrees that the threats to bees are a syndrome that has a multifactorial nature and anthropogenic origin. In face of a plethora of relev
Popular Abstract in Swedish Cytokromer är hem-innehållande proteiner som transporterar elektroner. Hem är den järninnehållande molekyl som binder syre i hemoglobin i de röda blodkropparna i blodet hos t ex människor. Cytokromer har viktiga funktioner i olika typer av organismer: bakterier, växter och djur. Genom att studera vilka gener som behövs för syntesen av cytokromer i bakterien Bacillus subCytochromes are heme-containing proteins that function in electron transfer reactions, e.g. respiration and photosynthesis. There are several different types of cytochromes. C-type cytochromes differ from other types of cytochromes in that the heme group is covalently attached to the polypeptide via thioether bonds to two cysteinyl residues in a consensus motif, Cys-Xaa-Yaa-Cys-His. Cytochrome c o
Energy efficiency has gained attention as an important means of ensuring energy supply, fostering countries’ competitiveness and cost-effectively mitigating CO2 emissions. Yet, evaluations of energy efficiency policies are often lacking or insufficient. Moreover, researchers have tended to overlook these types of policies in non-OECD countries, although at this very moment many of these countries
Massive MIMO is considered a key technology for the future wireless communication systems. The promising properties in terms of higher spectral and transmit-energy efficiency are brought by the large number of antennas at the base station (BS). As the number of antennas increases, the aperture of the BS antenna array may become much larger, as compared to today's antenna arrays. In this case, mobi
In this work we compare channel estimation algorithms for use in an iterative CDMA receiver in a block fading environment. The receiver consists of a soft multiuser data estimator, a bank of single user decoders, and a multiuser channel estimator. The multiuser data estimator is implemented as parallel interference canceler with unconditional post-MMSE filtering (PIC-MMSE) and the decoder is a sof
A sequential Bayesian estimation algorithm for joint positioning and multipath mitigation in global navigation satellite systems is presented, with an underlying process model that is especially designed for dynamic user scenarios and dynamic channel conditions. In order to facilitate efficient integration into receivers it builds upon complexity reduction concepts that previously have been applie
Using a ground-based and an above-canopy eddy covariance system in addition to stem respiration measurements, the annual respiratory fluxes attributable to soil, stems and foliage were determined for a Scots pine (Pinus sylvestris L.) forest growing in central Siberia. Night-time foliar respiration was estimated on the basis of the difference between fluxes measured below and above the canopy and
Advanced radio system designs have been proposed that are intended to overcome or even take advantage of the radio channel caused by multipath effects in urban environments to achieve even higher performance. We present analytical expressions for the angle-of-arrival power density function (PDF) and general analysis for time of arrival (expressed in terms of distance) respectively, for the channel
In this article the authors reflect upon and critically examine signs of a contradiction in higher education which they discuss in terms of the tension between 'use value' and 'exchange value'. Use value here represents learning as something valuable ‘in itself’ whereas exchange value represents learning as an achievement of grades and credits to be ‘traded’ on a market. Their aim in this article
In this paper we address the problem of projective reconstruction of structure and motion given only image data. In particular we investigate three novel minimal combinations of points and lines over three views, and give complete solutions and reconstruction methods for two of these cases: "four points and three lines in three views", and "two points and six lines in three views". We show that in
Packaging has a significant impact on the efficiency of logistical systems and therefore, improvements in the retail supply chain can be achieved through the integration and development of the systems of packaging and logistics. In order to enable these improvements, models are needed that facilitate evaluations along the supply chain in order to grasp the whole picture and avoid sub-optimisations
Accurate measurement of bank risk is a matter of considerable importance for bank regulation and supervision. Current practices in most countries emphasize reliance on financial statement data for assessing banks’ risk. However, the possibility of increased reliance on market-based risk indicators has been a topic for academic and regulatory debate for a long time. Market monitoring of bank risk h
Flame flashback from the combustion chamber to the premixing section is a major operability issue when using high H-2 content fuels in lean premixed combustors. Depending on the flow-field in the combustor, flashback can be triggered by different mechanisms. In this work, three flashback mechanisms of H-2/CH4 mixtures were visualized in an atmospheric variable swirl burner using high speed OH chem
