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Environmental performance of biogas produced from industrial residues including competition with animal feed - life-cycle calculations according to different methodologies and standards

Today incentives for an increased use of biofuels exist, one being the EU Renewable Energy Directive (RED). In this article the environmental performance of biogas systems using industrial residues from biofuel and food industries as substrates are analysed using a life-cycle perspective. These substrates are interesting since they do not compete directly with agricultural land for food production

Head in the clouds and feet on the ground

Abstract in Undetermined Few countries have increased their expenditure on R&D as rapidly as has China in recent years. However, so far, little academic attention has been paid to how decisions are taken and priorities set in Chinese research policy. This paper analyzes priority-setting in China's recent research policy. We find that China's research policy is driven by a variety of different,

Highly Efficient Membraneless Glucose Bioanode Based on Corynascus thermophilus Cellobiose Dehydrogenase on Aryl Diazonium-Activated Single-Walled Carbon Nanotubes

We present an approach for electrode modification by using the oxidoreductase cellobiose dehydrogenase from the ascomycete Corynascus thermophilus (CtCDH). CtCDH is a two-domain enzyme, in which the catalytic dehydrogenase domain (DHCDH) hosts flavin adenine dinucleotide (FAD) as cofactor and is connected through a flexible linker to a small cytochrome domain with a heme b cofactor (CYTCDH). This

The concept of energy security. Beyond the four As

Energy security studies have expanded from their classic beginnings following the 1970s oil crises to encompass various energy sectors and increasingly diverse issues. This viewpoint contributes to the re-examination of the meaning of energy security that has accompanied this expansion. Our starting point is that energy security is an instance of security in general and thus any concept of it shou

The vortex state of FeSe1-xTex superconducting thin films

We report the vortex dynamics of tellurium substituted FeSe1-xTex superconducting thin films. The electric field versus current density (E-J) curve for films with low Te substitution is still governed by the thermally activated flux flow model at temperatures as low as 0.5T(C)(offset). In contrast, we clearly observed a vortex liquid-glass transition in films with high Te substitution. The E-J cur

Are flight paths of nocturnal songbird migrants influenced by local coastlines at a peninsula?

By recording nocturnally migrating passerines with tracking radar we have investigated how coastlines affect the migrants’ flight paths. Birds could use coastlines as an orientation aid or as a reference cue to compensate for wind drift while migrating. However, on the small scale of Falsterbo Peninsula in southern Sweden, we found very little effect of coastlines on migrants flight paths, irrespe

The Gaia-ESO Survey: Metallicity of the Chamaeleon I star-forming region

Context. Recent metallicity determinations in young open clusters and star-forming regions suggest that the latter may be characterized by a slightly lower metallicity than the Sun and older clusters in the solar vicinity. However, these results are based on small statistics and inhomogeneous analyses. The Gaia-ESO Survey is observing and homogeneously analyzing large samples of stars in several y

Stroke: Working Toward a Prioritized World Agenda

Background and Purpose-The aim of the Synergium was to devise and prioritize new ways of accelerating progress in reducing the risks, effects, and consequences of stroke. Methods-Preliminary work was performed by 7 working groups of stroke leaders followed by a synergium (a forum for working synergistically together) with approximately 100 additional participants. The resulting draft document had

Cations Strongly Reduce Electron-Hopping Rates in Aqueous Solutions

We study how the ultrafast intermolecular hopping of electrons excited from the water O1s core level into unoccupied orbitals depends on the local molecular environment in liquid water. Our probe is the resonant Auger decay of the water O1s core hole (lifetime similar to 3.6 fs), by which we show that the electron-hopping rate can be significantly reduced when a first-shell water molecule is repla

Dementia with Lewy bodies —an Investigation of Cause and Consequence

Dementia with Lewy bodies (DLB) is today considered to be the second most common primary neurodegenerative dementia after Alzheimer’s disease. However, the disease has only been a clearly defined entity for 13 years. Due to its recent recognition, DLB is still not as extensively studied as are other major dementia disorders such as Alzheimer’s disease (AD), vascular dementia, and fronto-temporal d

Genetic variants in CDC42 and NXPH1 as susceptibility factors for constipation and diarrhoea predominant irritable bowel syndrome

Objective The complex genetic aetiology underlying irritable bowel syndrome (IBS) needs to be assessed in large-scale genetic studies. Two independent IBS cohorts were genotyped to assess whether genetic variability in immune, neuronal and barrier integrity genes is associated with IBS. Design 384 single nucleotide polymorphisms (SNPs) covering 270 genes were genotyped in an exploratory cohort (93

Test Scheduling in an IEEE P1687 Environment with Resource and Power Constraints

In contrast to IEEE 1149.1, IEEE P1687 allows, through segment insertion bits, flexible scan paths for accessing on-chip instruments, such as test, debug, monitoring, measure- ment and configuration features. Flexible access to embedded instruments allows test time reduction, which is important at production test. However, the test access scheme should be carefully selected such that resource cons

Design of a novel biohythane process with high H2 and CH4 production rates

A biohythane process based on wheat straw including: i) pretreatment, ii) H2 production using Caldicellulosiruptor saccharolyticus, iii) CH4 production using an undefined consortium, and iv) gas upgrading using an amine solution, was assessed through process modelling including cost and energy analysis. According to simulations, a biohythane gas with the composition 46–57% H2, 43–54% CH4 and 0.4%