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The accuracy of q-space measurements was evaluated at a 3.0-T clinical magnetic resonance imaging (MRI) scanner, as compared with a 4.7-T nuclear magnetic resonance (NMR) spectrometer. Measurements were performed using a stimulated-echo pulse-sequence on n-decane as well as on polyethylene glycol (PEG) mixed with different concentrations of water, in order to obtain bi-exponential signal decay cur
Pressurized hot liquid water and steam were used to investigate the possibilities of extracting insecticides (carbofuran, carbosulfan, and imidacloprid) from contaminated process dust remaining from seed-pellet production. Extraction temperature was the most important parameter in influencing the extraction efficiency and rate of extraction, while varying the pressure had no profound effect. A cle
The purpose of this in vitro study was to assess the effect of 17beta-estradiol on hemorheologic parameters, namely on erythrocyte aggregation and deformability and membrane fluidity.Blood samples from 65 women (aged 57 +/- 4 years) undergoing postmenopausal hormone replacement therapy were obtained and were incubated for 5 min in absence and presence of 17beta-estradiol 10(-5) M. The measured par
BACKGROUND: It is generally argued that variations in cerebral blood flow create concomitant changes in the cerebral blood volume (CBV). Because nitrous oxide (N(2)O) inhalation both increases cerebral blood flow and may increase intracranial pressure, it is reasonable to assume that N(2)O acts as a general vasodilatator in cerebral vessels both on the arterial and on the venous side. The aim of t
The interactions, in aqueous media, between a pyrene-labelled polyelectrolyte poly(acrylic acid) (PAAMePy) with two different degrees of labelling and beta- and gamma-cyclodextrins (beta- and gamma-CD) were studied using absorption and fluorescence (steady-state and time-resolved) techniques. In addition to qualitative and quantitative parameters obtained from absorption and steady-state fluoresce
Little has been published about specific problems that may occur during long-distance transports of newborn cardiac patients. During a 4-year period after centralization of pediatric heart surgery in Sweden, 286 transports were prospectively investigated. A majority (77.3%) of the transports were carried out by nonspecialized teams. Ten severe adverse events, including the death of 1 infant, occur
Background Calcipotriol and betamethasone dipropionate are both widely used, effective treatments for psoriasis. Vitamin D analogues and topical corticosteroids have different mechanisms of action in the treatment of psoriasis. A new vehicle has been developed in order to contain both calcipotriol (50 micro g g-1) and betamethasone dipropionate (0.5 mg g-1) in an ointment form. By using calcipotri
Costs of sperm production may lead to prudence in male sperm allocation and also to male mate choice. Here, we develop a life history-based mutual mate choice model that takes into account the lost-opportunity costs for males from time out in sperm recovery and lets mate competition be determined by the prevailing mate choice strategies. We assume that high mating rate may potentially lead to sper
A microwave-assisted extraction (MAE) method has been developed for determination of zearalenone in wheat and corn by LC-MS with an atmospheric pressure chemical ionization interface (APCI). Matrix effects were minimized by use of matrix-matched standard curves for quantification of the analyte. The limit of quantification (LOQ) of the method was 30 ng g(-1) in wheat and 20 ng g(-1) in corn. The r
1. We analysed time-series data from populations of red kangaroos (Macropus rufus, Desmarest) inhabiting four areas in the pastoral zone of South Australia. We formulated a set of a priori models to disentangle the relative effects of the covariates: rainfall, harvesting, intraspecific competition, and domestic herbivores, on kangaroo population-growth rate. 2. The statistical framework allowed fo
To evaluate the relative importance of climatic factors and the level of natural canopy disturbance on sapling growth rates, terminal shoot increment of Norway spruce (Picea abies (L.) Karst.) saplings was analyzed in old-growth Sphagnum-Myrtillus forests of the European southern boreal zone (Tver Region, Russia). For a 5-year period, terminal increments were retrospectively measured in 225 saplin
The Internet offers a plethora of venues for autobiographical self-representation: webcams, personal websites, blogs. There is much research on self-representation online, whereas very little research has focused on the consumption of online self-representation. This article focuses on the act of reading diary blogs. Who are the actual readers of a specific blog and what values do they place on th
Both timber and glass are materials that have aesthetically pleasing properties. An appealing idea is to combine them to overcome the drawbacks and utilise the beneficial mechanical properties. Adhesive bonding with an appropriate adhesive could provide a uniform stress distribution at the transition between the materials.
This report presents a study of three different adhesives, silicon
Popular Abstract in Swedish Avhandlingen behandlar substitutionsprincipen som den är formulerad i utbytesregeln i lagen om kemiska produkter. Denna lagregel tolkas med utgångspunkt i dess kontext i kemikalielagstiftningen. I avhandlingen klarläggs vad utbytesregeln innebär för den som hanterar kemikalier. Myndigheternas förvaltningsrättsliga befogenheter att genomdriva substitutionsprincipen underThe principle of substitution is, in national and international contexts, regarded as an important instrument when striving towards sustainable development and sustainable handling of chemicals.This thesis deals with the principle as it is formulated in the Swedish Act of Chemical Products. The implementation of this rule of substitution is studied from several aspects. The rule of substitution is
Popular Abstract in Swedish Är det möjligt att det pågår en hård kamp under våra fötter när vi tar en promenad i den Skånska lövskogen? Oftast tänker man på ett positivt förhållande mellan växter och marken's bakterier och svampar, där den autotrofa växten omvandlar luften's kol (C), i form av koldioxid, till organiskt C som därigenom blir tillgängligt för mikroorganismerna. Mikroorganismerna bryCompetition between and within species has been one of the most studied concepts in ecology. In this thesis the aim was to test the idea of plant-microbial competition for N and, by studying this interaction, to gain a better understanding of different N processes in soil. The research carried out seeks to investigate plant-microbial competition for N based on the definition that competition only
This thesis contributes to the development of tools and methods for assessing sustainability and applies them to an assessment of the Swedish sugar production system. The thesis’ aims are to compile an overview of the existing approaches for assessing sustainability, to suggest a method(s) for structuring and analyzing complex sustainability issues, and to appraise sustainability impacts from Swed
This study investigated cold weather safety footwear and the possible thermal effects of steel toe caps in footwear. Two boot models were manufactured and used in two variants - with (As and Ws) and without (An and Wn) steel toe cap. The boot insulation was measured with an artificial, heated foot (AHF). Experiments with 6 male subjects with boots Ws and Wn consisted of sitting for 60 minutes at -
Popular Abstract in Swedish Under 1990-talet ändrades miljöarbete i företag dramatiskt. Från att ha varit huvudsakligen fokuserad på lagstiftningens krav och tekniska lösningar för utsläpp och avfall, tog miljöarbete (d.v.s., "corporate environmental management", eller CEM) till sig nya strategiska och organisatoriska dimensioner runt om i världen. "Det gröna företaget" blev ett begrepp för denna Adopting a phenomenological, sensemaking-based approach, this dissertation reviews and critiques a variety of theories proposed as explanations of corporate “greening” and the evolution of corporate environmental management (CEM), and then presents and analyzes an organization study to explore in greater depth how sensemaking can be used for research in this context. As its object, the ethnograph
