Anaerobic digestion is a suitable method for the treatment of wastewater and organic wastes, yielding biogas as a useful by-product. A common way of preventing instability problems and avoiding acidification in anaerobic digesters is to keep the organic load to the digester far below its maximum capacity. An improved way of operating digesters would be to use monitoring and control systems for inc

In the course of an examination of some data on the burning of furnishings and bedding in compartments, the measured rates of fire development in polyurethane mattresses have been compared with one of the standard inputs used in fire modelling with the Harvard Code. An apparant discrepancy is discussed and an explanation offered in physical terms. The explanation is germane to a comparison between

Global environmental changes are topics of important societal concern and current scientific interest. These changes are driven by many different forcing and feedbacks occurring at various time and geographic scales and are largely influencing the various Earth systems. Despite the fact that the natural component of these changes has always occurred, today it's the anthropogenic component and its

This working paper analyses the mindset and driving forces of innovators in the agricultural sector. The key drivers and incentives are different in this group than for the innovators from academic institution. Therefor the interaction with risk capital providers becomes problematic.

Accurate description of the response function of X-ray detectors is important for quantitative PIXE analysis. For analytical description of low-energy tailing in PIXE spectra, the GUPIX approach was used, i.e. a combination of Hypermate type functions. The low-energy tailing parameters of a low-energy high purity germanium X-ray detector in the region 1.3-9.2 keV was determined by systematic fitti

Self-organization in aqueous systems based on ionic surfactants, and their mixtures, can be broadly understood by a balance between the packing properties of the surfactants and double-layer electrostatic interactions. While the equilibrium properties of micellar systems have been extensively studied and are understood, those of bilayer systems are less well characterized. Double-chained and pseud

Population stratification occurs in case-control association studies when allele frequencies differ between cases and controls because of ancestry. Stratification may lead to false positive associations, although this issue remains controversial(1-4). Empirical studies have found little evidence of stratification in European-derived populations, but potentially significant levels of stratification

Popular Abstract in Swedish Syftet med studien har varit att, genom huvudsakligen kvalitativ beskrivning, studera narrativ sekvens, d v s berättelsen, i exolingvala samtal mellan infödd och icke infödd (svensktalande studenter) talare av franska. Den teoretiska ramen sträcker sig från textlingvistik (Revaz, Adam, Bronckart etc.) till konversationsanalys (Labov, Sacks, Norrick, Laforest, Kerbrat-OrThe aim of this study is to examine, through a mainly qualitative description, the narrative in exolingual conversations in French between non-native speakers (NNS) (Swedish students) and native speakers (NS). The theoretical frame ranges from text linguistics (Revaz, Adam, Bronckart etc.) to conversation analysis (Labov, Sacks, Norrick, Laforest, Kerbrat-Orecchioni, Bres, Norrby etc.). The study

Theories of democracy consider communicative interaction among citizens central, In recent years the idea of deliberative democracy has galvanised elements of political theory with perspectives on communication. This concept emerges to a large extent from the Habermasian trajectory and links currents from theories of civil society and citizenship. It has thus a rather forceful normative dimension.

The discrete-time 'analytic' signal finds numerous applications in a wide range of fields, and call be efficiently implemented using the fast Fourier transform (FFT). A computationally efficient sliding window time-update of the discrete-time 'analytic' signal, not requiring the FFT, is proposed.

Lithium tetrahydridoboranate is among the materials with the highest hydrogen content and has great potential as a possible H-2-storage material, although, the release and uptake of H-2 is not fully understood. In this work, LiBH4 was studied by in situ synchrotron radiation powder X-ray diffraction (PXD) and solid state CP/MAS NNIR both at variable temperatures. This study revealed two new phases

In spite of the continuous development of production systems work-related musculoskeletal disorders is still a large problem. One reason might be the difficulties in quantifying the ergonomic effects of interventions. In this paper ergonomic consequences of technical and organisational changes were quantified in a plant for producing slats for parquet flooring. Muscle activity, work postures and m

Recent experimental findings and theoretical approaches to the electric dipole (El) strength distribution below the particle emission threshold at shell closures are revisited. Results from photon scattering experiments are discussed and compared to predictions within the quasiparticle-phonon nuclear model. An analysis of the fine structure of the El strength is presented. Recent studies of the E1