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Techno-economic evaluation of a two-step biological process for hydrogen production.

An integrated biological process for the production of hydrogen based on thermophilic and photo-heterotrophic fermentation was evaluated from a technical and economic standpoint. Besides the two fermentation steps the process also includes pretreatment of the raw material (potato steam peels) and purification of hydrogen using amine absorption. The study aimed neither at determining the absolute c

Coastal cliffs on islands as foraging habitat for bats

Small islands usually show simplified ecosystems with limited availability of suitable foraging habitats for bats, thus habitat selection on islands may differ compared to the mainland. Habitats that are marginal on the mainland may be important on islands. The island of Capri consists, to a large extent, of steep limestone cliffs and Mediterranean shrubland, with virtually no forests or other hab

Genetic Polymorphisms in Host Innate Immune Sensor Genes and the Risk of Nasopharyngeal Carcinoma in North Africa

Nasopharyngeal carcinoma (NPC) is a rare malignancy in most parts of the world. It is an Epstein-Barr virus-associated malignancy with an unusual racial and geographical distribution. The host innate immune sensor genes play an important role in infection recognition and immune response against viruses. Therefore, we examined the association between polymorphisms in genes within a group of pattern

Klimatpolitik och energisäkerhet: konflikter och synergier

För att begränsa risken för allvarliga klimatförändringar måste utsläppen av växthusgaser minskas kraftigt. Detta kommer att kräva en omställning av energisystemet där energieffektivisering och en ökad elektrifiering, förnybar energi, avskiljning och lagring av koldioxid samt kärnkraft kan få stor betydelse. I denna rapport analyseras hur en sådan omställning kan påverka olika aspekter av energi

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The article comprises an exemplification of the method the author used in his scientific research as a member of the grant Presa românească şi ideea naţională. Antologie, studiu, dicţionar, dosar critic (The Romanian Press and the National Idea. Anthology, Study, Dictionary, Critical File), 2005-2006, CNCSIS code 782, coordinator of grant Professor Mircea Popa. The author was responsible for the p

Development of collective structures over noncollective excitations in Nd-139

High-spin states in Nd-139 were investigated using the reaction Zr-96(Ca-48,5n) at a beam energy of 195 MeV and gamma-ray coincidences were acquired with the Euroball spectrometer. Apart from several dipole bands at medium excitation energy, three quadrupole bands have been observed at high spin. Linking transitions connecting two of the high-spin bands to low-energy states have been observed. Cal

Recent advances in semiconductor nanowire heterostructures

Semiconductor nanowires have made a deep impact on materials science related research, and are being explored for applications in several disciplines. Many of these applications require heterostructures, which can be defined as the combination of two or more materials within the same nanowire structure. In this paper we briefly review the current state-of-the-art concerning epitaxial nanowire hete

Status of the Single Stage AMS machine at Lund University after 4 years of operation

The Lund SSAMS machine has been in routine operation since 2004. We present results from the last year of operation of the facility. The reference sample IAEA C7 and the "old" oxalic acid, Oxl, were used as secondary standards. As primary standard for calculations the OxII was used. The background and long term stability of the facility are discussed. We also report on the quality of the C-13/C-12

Affinity tags can reduce merohedral twinning of membrane protein crystals

This work presents a comparison of the crystal packing of three eukaryotic membrane proteins: human aquaporin 1, human aquaporin 5 and a spinach plasma membrane aquaporin. All were purified from expression constructs both with and without affinity tags. With the exception of tagged aquaporin 1, all constructs yielded crystals. Two significant effects of the affinity tags were observed: crystals co

Multitaper Wigner distribution with pre-determined doppler-lag bandwdith and sidelobe suppression

Multi taper spectrogram decomposition of the time-lag kernel of a time-frequency distribution might result in computationally efficient calculations if the number of multi tapers to be considered in the spectrogram are small. In this paper, penalty functions are designed and used in the computation of multi tapers corresponding to the Wigner distribution time-lag kernel. The resulting multi taper

Geographical and temporal flexibility in the response to crosswinds by migrating raptors.

Wind and ocean currents may potentially have important effects on travelling animals, as an animal which does not respond to lateral flow will be drifted from its intended direction of movement. By analysing daily movements of migrating ospreys Pandion haliaetus and marsh harriers Circus aeruginosus, as recorded by satellite telemetry, in relation to global wind data, we showed that these raptors

Natriuretic Peptides and the Microcirkulation in Heart Failure Patients

Popular Abstract in Swedish Forskningen har visat Den ökade prevalensen av kronisk hjärtsvikt utgör en enorm utmaning för sjukvården. Trots att vi idag har effektiva medicinska behandlingar vid hjärtsvikt och bra läkemedel så är sjukligheten och dödligheten fortfarande betydande. Hjärtsvikt leder till en förändrad kärlreaktivitet generellt i cirkulationen, dock är betydelsen av denna endast känd The increased prevalence of chronic congestive heart failure (HF) is a tremendous challenge for society. In spite of effective medical treatment for acute HF, better pharmacological treatment for specific neurohormonal intervention and better diagnostic tools, e.g. biomarkers of natriuretic peptides, the morbidity and mortality due to this disease are still prominent. HF leads to vascular dysfunct

Functional evolution of a multigene family: Orthologous and paralogous pheromone receptor genes in the Turnip Moth, Agrotis segetum

Lepidopteran pheromone receptors (PRs), for which orthologies are evident among closely related species, provide an intriguing example of gene family evolution in terms of how new functions may arise. However, only a limited number of PRs have been functionally characterized so far and thus evolutionary scenarios suffer from elements of speculation. In this study we investigated the turnip moth Ag

An 0.8-mm(2) 9.6-mW Iterative Decoder for Faster-Than-Nyquist and Orthogonal Signaling Multicarrier Systems in 65-nm CMOS

This paper presents an iterative decoder for faster-than-Nyquist (FTN) and orthogonal signaling multi-carrier systems. FTN signaling is a method of improving bandwidth efficiency at the expense of higher processing complexity in the transceiver. The decoder can switch between orthogonal and FTN signaling modes and exploits channel properties to improve bandwidth efficiency. The decoder is fabricat

APOLIPOPROTEIN M

Apolipoprotein M (apoM) is composed of 188 amino acids and has an apparent molecular weight of 25 kDa. ApoM belongs to the lipocalin protein superfamily, and is found in all major lipoprotein classes, although the majority of apoM is found in high density lipoprotein, HDL. In apoM, the signal peptide is retained in the mature protein. ApoM with a cleavable signal peptide was constructed. In contra

Stretch-Sensitive Down-Regulation of the miR-144/451 Cluster in Vascular Smooth Muscle and Its Role in AMP-Activated Protein Kinase Signaling.

Vascular smooth muscle cells are constantly exposed to mechanical force by the blood pressure, which is thought to regulate smooth muscle growth, differentiation and contractile function. We have previously shown that the expression of microRNAs (miRNAs), small non-coding RNAs, is essential for regulation of smooth muscle phenotype including stretch-dependent contractile differentiation. In this s