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Popular Abstract in Swedish Kisel (Si) förekommer i alla naturliga vatten i form av löst kisel och är ett näringsämne för många växt- och djurarter. Löst kisel kommer ursprungligen från kiselhaltiga mineral som har vittrat. Vid vittringen går det åt koldioxid (CO2) och på så vis finns det ett samband mellan omsättningen av kisel och kol. Både upptag och vittring av kisel bidrar till att fördelningSilicon (Si) is ubiqutious in natural waters as dissolved silica (DSi) and is used as a nutrient by many plant and animal species. DSi ultimately derives from the weathering of silicate minerals, a process which also consumes atmospheric CO2 and couples the silicon and carbon cycles. These processes, among others, impart observable fractionations to the stable isotopes of silicon, which makes the

This questionnaire survey was initiated to acquire information for prepration of a series of field studies. The paper deals with questions that were related to the thermal responses of the feet and footwear performance. The questionnaire was sent to a harbour, a telecommunication company and a customs office. At the harbour most of the workers used footwear with warm lining during winter. Half of

Spontaneously opening, chloride-selective channels that showed outward rectification were recorded in ripped-off patches from rat cultured hippocampal neurons and in cell-attached patches from rat hippocampal CA1 pyramidal neurons in slices. In both preparations, channels had multiple conductance states and the most common single-channel conductance varied. In the outside-out patches it ranged fro

Popular Abstract in Swedish När yrkesutbildningar teoretiseras ställs lärare och studerande inför skriftspråksbaserad, ofta abstrakt information som de förväntas läsa, kritiskt granska, ifrågasätta och omskapa till något eget. Språk och lärande hör nära samman, men när de studerandes vardagsspråk ska möta sådana texter kan språkandet skapa problem. Vårt sociala sammanhang har stor betydelse för vaBrandvägg describes how a group of firefighters, who consistently maintain that they are “practitioners and not theorists”, relate to various forms of language based knowledge and language based “knowledging” in their vocational training, which is based on problem based learning. From a sociocultural perspective to learning, and within the parameters of a didactic perspective with the focus on the

Theoretical and empirical research often points to a positive relation between corporate sustainability and organisational performance; however, attempts to conceptualise the multi-dimensional nature of sustainability practices are rare in the current literature. Thus, the purpose of this paper is to present a conceptual framework to aid in understanding and explaining the relationship between sus

Simulation tools are used to a wide extent in the product development process today, both to obtain better products and to reduce the development time required. Anisotropic materials are utilized in many engineering applications. Material models for materials of these types are needed in order to obtain accurate results from the simulations undertaken. In the thesis, a constitutive framework for

A laser diode structure realizing internal gain switching is suggested for high-power picosecond optical pulse generation. A thin wideband barrier layer is incorporated in the active region of this structure, in order to provide additional control of the carrier distribution and the gain dynamics. The dynamic laser output response to the nanosecond pumping current pulses is modeled and analyzed. T

OBJECTIVE: To determine the ability of montelukast, a leukotriene receptor antagonist, to allow tapering of inhaled corticosteroids in clinically stable asthmatic patients. DESIGN: Double blind, randomised, placebo controlled, parallel group study. After a single blind placebo run in period, during which (at most) two inhaled corticosteroids dose decreases occurred, qualifying, clinically stable p

A double-blind, randomized, placebo-controlled cross-over multi-center study was conducted to evaluate the efficacy and safety of gabapentin in the treatment of neuropathic pain caused by traumatic or postsurgical peripheral nerve injury, using doses tip to 2400 mg/day. The study comprised a run-in period of two weeks, two treatment periods of five weeks separated by a three weeks' washout period.

Wireless sensor networks are emerging as an important area for communications. They enable a wealth of new applications including surveillance, building control, factory automation, and in-vehicle sensing. The sensor nodes have to operate under severe constraints on energy consumption and form factor, and provide the ability for precise self-location of the nodes. These requirements can be fulfill

Objective. The aim of the study was to survey existing research about fatigue among older people with chronic non-malignant pain. Method. A structured literature review was carried out using the Medline database. The terms ‘fatigue’ and ‘tiredness’ were used synonymously. These subject headings were combined with pain. A literature search was made in 2004 and included articles back to 1995. Resu

Despite their tiny brains, insects show impressive abilities when navigating over short distances during path integration or during migration over thousands of kilometers across entire continents. Celestial compass cues often play an important role as references during navigation. In contrast to many other insects, South African dung beetles rely exclusively on celestial cues for visual reference

Background: To relate findings of qualitative evaluation of first-pass perfusion-CMR and anatomical evaluation on coronary angiography (CA) to the reference standard of quantitative perfusion, cardiac PET, in patients with suspected or known stable coronary artery disease (CAD). Methods and Results: Forty-one patients referred for CA due to suspected stable CAD, prospectively performed adenosine s

BACKGROUND: Hyperthyroidism is known to have a significant impact on quality of life (QoL), at least in the short term. The purpose of the present study was to assess QoL in patients 6-10 years after treatment for Graves' disease (GD) with radioiodine (RAI) compared to those treated with thyroidectomy or antithyroid drugs (ATD) as assessed with both thyroid-specific Thyroid-Related Patient-Reporte

X-Ray absorption edge and EXAFS spectra of the solvated cations of platinum(II) in water, dimethyl sulfoxide and acetonitrile and of palladium(II) in dimethyl sulfoxide have been recorded and analyzed. The cations are four-coordinated. Pt-O in Pt(H2O)4(2+) is 2.01(1) angstrom and Pt-N in Pt(CH3CN)4(2+) is 2.00(1) angstrom. The dimethyl sulfoxide solvated cations of both platinum and palladium contX-Ray absorption edge and EXAFS spectra of the solvated cations of platinum(II) in water, dimethyl sulfoxide and acetonitrile and of palladium(II) in dimethyl sulfoxide have been recorded and analyzed. The cations are four-coordinated. Pt-O in Pt(H2O)4(2+) is 2.01(1) angstrom and Pt-N in Pt(CH3CN)4(2+) is 2.00(1) angstrom. The dimethyl sulfoxide solvated cations of both platinum and palladium cont