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Popular Abstract in Swedish I denna studie har de grundläggande aspekterna på mass- och värmetransport i membrantekniken pervaporation studerats. Speciell tonvikt har lagts vid pervaporations användbarhet i samband med aromämnesåtervinning. Masstransporten i pervaporation påverkas av ett yttre masstransport- motstånd kallat koncentrationpolarisation. Detta fenomen kan orsaka att fluxen av de seleIn this study, the fundamental mass and heat transfer properties of the membrane separation process called pervaporation were investigated. The suitability of pervaporation for aroma compound recovery was especially evaluated. The mass transfer in pervaporation is affected by an external mass transfer resistance in the liquid feed boundary layer, i.e. the concentration polarization phenomenon. Th

The Garden Warbler is a classic subject for the study of Palaearctic-African bird migration strategies. Most studies have considered the situation close to the breeding areas, while the African and especially the sub-Saharan part of the species' migration have received comparatively little attention. Here we use autumn and spring ringing data from Nigeria and The Gambia to study the movements and

Filamentous fungi produce asexual dispersive spores (conidia), when conditions are not suitable for apical extension growth. Conidiation (the process by which conidia produced) in genus Penicillium has attracted considerable interest because of its wide usage in different areas. In addition, several Penicillium species are pathogenic toward humans and plants, causing crop spoilage as well as decay

Six-membered cyclic carbonates are potential monomers for phosgene and/or isocyanate free polycarbonates and polyurethanes via ring-opening polymerization. A two-step process for their synthesis comprising lipase-catalyzed transesterificationofa polyol, trimethylolpropane(TMP) with dimethylcarbonate(DMC)in a solvent-free system followed by thermal cyclization was optimized to improve process effic

Aim:The aim was to analyse any associations between socio-demographic and psychosocial factors and different features of the metabolic syndrome in a geographically well-defined population of middle-aged women. Methods:A population of 10 766 Caucasian women aged 50-59 years was investigated regarding biological and socio-demographic conditions, physical activity, dietary habits, aspects of quality

The Hyttsjo granites occur in the extensively mineralised Langban-Nordmark area in the westernmost part of the Bergslagen ore province. They have been classified as late Svecokarelian granites due to their homogeneous and generally isotropic appearance in addition to a WR Rb/Sr age. Moreover, they have been considered as possible candidates for supplying essential metals to epigenetic mineralisati

OBJECTIVE: Free radicals formed after coronary artery occlusion and reperfusion are assumed to produce myocardial stunning and possibly other forms of reperfusion injury as well. Malondialdehyde (MDA) is an end product in the lipid peroxidation chain reaction and is frequently used as a marker for free oxygen radical production. Increased levels of plasma MDA have been found following successful t

Objective To standardize the evaluation of regional fetal brain blood perfusion, using power Doppler ultrasound (PDU) to estimate the fractional moving blood volume (FMBV) and to evaluate the reproducibility of this estimation. Methods Brain blood perfusion was evaluated in 35 normally grown fetuses at 28-30 weeks of gestation, using PDU. The following cerebral regions were included in the PDU col

Here we present results from a field experiment in a sub-arctic wetland near Abisko, northern Sweden, where the permafrost is currently disintegrating with significant vegetation changes as a result. During one growing season we investigated the fluxes of CO2 and CH4 and how they were affected by ecosystem properties, i.e., composition of species that are currently expanding in the area (Carex rot

In higher plants, genes for subunits of respiratory chain complex I (NADH:ubiquinone oxidoreductase) have so far been identified solely in organellar genomes. At least nine subunits are encoded by the mitochondrial DNA and 11 homologues by the plastid DNA. One of the 'key' components of complex I is the subunit binding the substrate NADH. The corresponding gene for the mitochondrial subunit has no

RATIONALE: Tandem mass (MS/MS) spectra generated by collision-induced dissociation (CID) typically lack redundant peptide sequence information in the form of e.g. b- and y-ion series due to frequent use of sequence-specific endopeptidases cleaving C- or N-terminal to Arg or Lys residues.METHODS: Here we introduce arginyl-tRNA protein transferase (ATE, EC 2.3.2.8) for proteomics. ATE recognizes aci

The oxidation reactions of alkanes with hydrogen peroxide and peracids (peracetic acid (PAA) and m-chloroperoxybenzoic acid (mCPBA)) catalysed by two Fe(II) complexes of pentadentate {N5}-donor ligands have been investigated. Kinetic isotope effect experiments and the use of other mechanistic probes have also been performed. While the total yields of oxidized products are similar regardless of oxi

Several organic cations, such as guanidino compounds and polyamines, have been found to accumulate in plasma of patients with kidney failure due to inadequate renal clearance. Here, we studied the interaction of cationic uremic toxins with renal organic cation transport in a conditionally immortalized human proximal tubule epithelial cell line (ciPTEC). Transporter activity was measured and valida

Giant bamboo plantations are currently being established in the Southern Africa region and can be considered as potential lignocellulosic feedstock for the production of second generation bioethanol. In this study, giant bamboo internodal material was subjected to sulphur dioxide (SO2) impregnated steam pretreatment prior to enzymatic hydrolysis. The effect of temperature, residence time, and acid

The importance of food on achieving sustainability has been a topic increasingly moved to the forefront of the international debate. Thus, governments from around the globe have developed and adopted comprehensive food policies aiming at sustainable development. As part of this, public procurement has been identified as a powerful tool leveraging government’s purchasing power and holding an intere

Digital 3D city models are used in many GIS applications, such as urban planning. Manual digitization of 3D buildings is rather tedious, hence automated approaches are much preferred. In this study, a pipeline for automated extraction and estimation of building roof facets from LIDAR data are devised based on available methods and ideas, which is part of the entire frame work of automatic creating

Avtalsfrihet är en viktig princip i ett skiljeförfarande. Parterna kan genom avtal påverka handläggningen i skiljenämnden och konstruera regler som binder skiljemännen i bedömningen av deras tvist. Det finns dock begränsningar för avtalsfriheten, då förfarandet måste uppnå vissa rättssäkerhetsgarantier och parterna måste ha möjlighet att föra sin talan. Syftet med denna uppsats är att undersöka omFreedom of contract is an important principle in arbitration. The parties may by agreement affect the arbitration proceedings and construct procedural rules that bind the arbitrators in the assessment of their dispute. However, there are restrictions on the freedom of contract, since the procedure must attain certain procedural safeguards and the parties must have the opportunity to present their

Recent research has noticed that the picture of the second-generation immigrants negotiating their identity in media space is different and far more complex than the first generation. With their emergence in the new age of digitalisation, the second-generation immigrant is offered more media choices and freedom of access to the two most important cultural sets of host and homeland country to make

Missbruk av dominerande ställning är ett väl undersökt fundament av EU:s konkurrensrätt. Internethandel och plattformar för handel på internet har dock skapat nya problem för tillämpningen. Kommissionen utreder för närvarande företaget Amazon Inc. för missbruk av dominerande ställning. De två ageranden som utreds är dels ett missbruk av konkurrenternas data, som Amazon har tillgång till tack vare Abuse of a dominant position is a well-researched pillar of European competition law. However, with the emerge of e-commerce and online marketplaces new problems arise. The commission is currently investigating whether Amazon Inc. is abusing their position on the European market through systematically relying on data from their competitors, available to Amazon due to their position as owner of the

Oleaginous microorganisms provide an opportunity to produce oils without the use of arable land for cultivation of oil-containing plants. Oleaginous microorganisms are also capable of storing products of pharmaceutical interest alongside storing polymers, which could open new opportunities in the bioplastic industry. Oily yeasts have several advantages in comparison to alternatives; their doubling