<p>The aim of this study is to examine the understanding, preschool teachers, have about their work related to energy conversion in the human body. Through individual interviews, answers have been sought to the following questions: What do the preschool teachers believe they need to know about the link between food and energy? What are the different methods preschool teachers use to workwith the area of energy conversion in the human body?</p><p>The results show that preschool teachers have knowledge in terms of food and its nutrients as an energy source for the body to cope with. However the more thorough and detailed questions become all the more uncertainty there is about the topic. Preschool teachers on their own initiative do bring up the topic with the children and begin conversations as well as ask questions, perform experiments and demonstrations. However, there is still a demand for further education in this topic among preschool teachers, as well as requests on advice and ideas on how to work with children around the body’s energy.</p><p>It is important that preschool teachers raise the subject with the children at an early age, in order to create awareness, understanding and interest in the children’s mind. With the children becoming older, also their understanding develops. This drives the importance of the preschool teachers’ performance and commitment in order to obtain meaningful work.</p><p>Keywords: knowledge, work methods, interest, further education.</p> / <p>Syftet med denna studie är att undersöka vilka uppfattningar pedagogerna i förskolan har kring sitt arbete med energiomsättningen i kroppen. Genom individuella intervjuer har svar sökts på följande frågor; Vad anser sig pedagogerna behöva kunna kring kopplingen mellan mat och energi? Vilka olika metoder använder pedagogerna sig utav för att arbeta med energiomsättningen i kroppen?</p><p>Resultatet visar på att pedagogerna har kunskap vad gäller maten och dess näringsämnen som energikälla för att kroppen ska orka med. Ju mer ingående och detaljerade frågorna blir desto mer osäkerhet finns det kring ämnet. På eget initiativ tar pedagogerna upp ämnet med barnen och inleder samtal, ställer frågor, utför experiment och demonstrationer. Dock finns önskemål kring fortbildning i ämnet hos pedagogerna, liksom önskemål kring tips och idéer på hur man kan arbeta med barnen kring kroppens energi.</p><p>Att pedagogerna tar upp ämnet med barnen redan i tidig ålder är betydelsefullt för att skapa medvetenhet och intresse. Med stigande ålder skapas även förståelse hos barnet. Pedagogernas insatser liksom engagemang och kunnande är betydelsefulla för ett givande arbete.</p><p>Nyckelord: kunskap, arbetsmetod, intresse, fortbildning.</p>

No description available.

<p>Bilirubin is a degradation product of haem, which is constantly formed in all</p><p>mammals. Increased levels of bilirubin in humans lead to jaundice, a condition</p><p>that is very common during the first days after birth. This neonatal</p><p>jaundice can routinely be treated by phototherapy without any serious side</p><p>effects. During this treatment, bilirubin undergoes a photoreaction to isomers</p><p>that can be excreted. The most efficient photoreaction is the isomerisation</p><p>around a double bond (Z-E-isomerisation), which results in more soluble</p><p>photoproducts.</p><p>The work presented in this thesis shows results of a femtosecond optical</p><p>spectroscopy study, combined with quantum-mechanical investigations, of</p><p>the mechanism of isomerisation of bilirubin. The spectroscopic research was</p><p>conducted with bilirubin in organic solvents, and in buffer complexed by</p><p>human serum albumin. This albumin complex is present in the blood, and</p><p>has thus medical importance. Quantum-chemical calculations (CASSCF) on</p><p>a bilirubin model were used to explain experimental results.</p><p>The fluorescence decay observed with femtosecond spectroscopy shows an</p><p>ultrafast component (~120 fs), which is explained by exciton localisation,</p><p>followed by processes with a lifetime of about 1-3 ps. These are interpreted</p><p>as the formation of a twisted intermediate, which decays with a lifetime of</p><p>10-15 ps back to the ground state, as observed by absorption spectroscopy.</p><p>CASSCF calculations, in combination with the experimental results, suggest</p><p>the ca. 1-3 ps components to be relaxation to the twisted S1 minimum, followed</p><p>by the crossing of a barrier, from where further relaxation takes place</p><p>through a conical intersection back to the ground state.</p><p>Time-dependent DFT calculations were utilised to analyse the absorption</p><p>spectrum of bilirubin. Good agreement with the measured spectrum was</p><p>achieved, and low-lying states were observed, that need further investigation.</p><p>The theoretically obtained CD spectrum provides direct evidence that</p><p>bilirubin preferentially binds to human serum albumin in the enantiomeric</p><p>P-form at neutral pH.</p> / <p>Bilirubin är en nedbrytningsprodukt av hem som ständigt bildas hos alla</p><p>däggdjur. En förhöjd bilirubinkoncentration i den mänskliga kroppen kan</p><p>leda till gulsot, något som är mycket vanligt under de första dagarna efter</p><p>födelsen (neonatal gulsot). Fototerapi används rutinmässigt som säker behandlingsmetod,</p><p>under vilken bilirubin genomgår en fotoreaktion till en</p><p>isomer som kan utsöndras. Den mest effektiva fotoreaktionen är en Z-Eisomerisation,</p><p>vilken leder till lösligare fotoprodukter.</p><p>Arbetet som presenteras i denna avhandling visar resultaten av en kombinerad</p><p>femtosekund optisk-spektroskopisk och kvantmekanisk undersökning</p><p>av mekanismen bakom bilirubins isomerisation. Den spektroskopiska</p><p>studien genomfördes med bilirubin, löst i organiska lösningsmedel och i</p><p>buffert i komplex med humant serumalbumin. Detta albuminkomplex finns i</p><p>blodet, och är därför av medicinskt intresse. Kvantmekanistiska CASSCFberäkningar</p><p>på en bilirubinmodell användes för att förklara de experimentella</p><p>resultaten.</p><p>Det uppmätta fluorescence sönderfallet visar ultrasnabba komponenter</p><p>(~120 fs). Dessa tolkas som excitonlokalisering, som följs av bildandet av</p><p>ett vridet intermediat med en hastighetskonstant på ca. 1 ps-1(beroende på</p><p>lösningsmedlet). Absorptionsmätningar visar att detta intermediat sönderfaller</p><p>tillbaka till grundtillståndet med en livstid på 10-15 ps.</p><p>CASSCF beräkningar, i kombination med de experimentella resultaten, tyder</p><p>på att sönderfallet med livslängden på ca. 1 ps är en relaxation till det</p><p>vridna S1-tillståndet. Reaktionsvägen därifrån antas passera en barriär till en</p><p>konisk genomskärning, som möjliggör snabb relaxation till grundtillståndet.</p><p>Tidsberoende DFT-beräkningar användes för att analysera bilirubins absorptionsspektrum,</p><p>vilket gav bra överensstämmelse med uppmätta data. Dessutom</p><p>hittades ett tillstånd med låg excitationsenergi, som kräver ytterligare</p><p>studier. Med hjälp av det beräknade CD-spectret kunde det visas att bilirubin</p><p>binder till albumin i P-formen vid neutralt pH.</p>

<p><strong>Objective</strong><em>:</em> Estimation of glomerular filtration rate (GFR) is an important tool in the diagnosis and management of chronic kidney disease. Today creatinine is the most frequently used marker for kidney function though several studies indicate that cystatin C is a superior marker. The purpose of this study was to validate Abbott Diagnostics turbidimetric cystatin C assay and enzymatic creatinine assay.</p><p><strong>Methods</strong><em>:</em> The validation was performed by studies of CV for the two methods and correlations between the two and other available methods for assessing GFR. The stability of cystatin C at room temperature was also evaluated.</p><p><strong>Results</strong><em>: </em>Both methods showed good precision. The Abbott cystatin C assay generally gave lower values and thereby higher estimated GFRs than the correlated Gentian method. The Abbott enzymatic creatinine assay gave higher values than the correlated Jaffe method. Those results are generally unexpected, but in this study the cause is an automatically applied negative intercept used together with the Jaffe method. Cystatin C showed high stability when stored at room temperature.</p><p><strong>Conclusions</strong><em>:</em> Estimated GFRs tend to differ depending on the choice of method for analyzing cystatin C or creatinine and this study gives an overview of the range of variation. The study also enlightens the need for an international calibrator for the cystatin C methods presented by different manufacturers.</p>

<p> </p><p>Genotyping can be used to link genetic variation among individuals to certain diseases or conditions. Some known disorders and states that are dependent on single nucleotide polymorphism (SNPs) are lactose intolerance, venous thrombosis, hereditary hemochromatosis and the difference in sensibility among people to metabolise drugs.</p><p>In this project a new kit, TaqManÒ Sample-to-SNP KitÔ <strong>for extraction of DNA and preparation of the extract for genotyping with real-time PCR and allelic discrimination, was evaluated. QIAamp® DNA Blood Biorobot® MDx Kit was used as the reference method.</strong></p><p>The purpose of the comparison was to find a method that makes DNA extraction from blood samples cheaper and faster, but with the same reliability as the reference procedure.</p><p>The results of the evaluation showed a complete agreement of the genotype results between the methods tested, which means that the new method was as reliable as the reference method. The costs of reagents and material would be reduced with 52% if the new method is adopted, that alone would result in a cost reduction of 144 000SEK a year with a sample volume of 650 samples/month. The time for DNA extraction would also be reduced with the new procedure.</p><p> </p>

<p>The aim of this study was to examine the expression of Thrombomodulin, Tissue Factor, Tissue Factor Pathway Inhibitor and Endothelial Protein C Receptor in placenta throughout the three phases of the third trimester in the normal placenta and in IUGR placenta from full term.</p><p>Twenty-five normal placenta samples and twenty-five IUGR placenta samples were obtained and each sample was stained by immunohistochemistry using monoclonal antibodies. Each antibody was optimised for antigen retrieval method and for optimal dilution, before been applied to the test tissue.</p><p>The results showed that each of the antibodies mentioned was expressed in normal placenta and in IUGR placenta.</p><p>No significant difference could be established concerning the expression of each antibody mentioned between normal and IUGR placenta.</p>

<p>In this thesis I estimate a monetary value of the risk attached to living near a hazardous waste</p><p>site in the town of Teckomatorp. This site is the result of hundreds of rusty leaking barrels of</p><p>toxins being buried in the ground by the company BT Kemi in the 1970’s. Ever since then the</p><p>site has been remediated in several steps and is still contaminated today. For estimating the</p><p>perceived risk of living near this site I use a hedonic price model (HP) which is a form of a</p><p>revealed preference approach. In a HP model the price of a market good is a function of</p><p>different utility-bearing characteristics and the estimated parameters can be used to calculate</p><p>the implicit prices of these characteristics. In this case I use a data set from the National</p><p>Swedish Institute for Building Research (IBF) and regress property price on a number of</p><p>housing characteristics. I compare an estimated town-effect for Teckomatorp with the</p><p>estimates for two control towns: Billeberga and Anderslöv. I can confirm my hypothesis that,</p><p>after controlling for housing characteristics, there is a negative effect on prices of property in</p><p>Teckomatorp. I find that property prices are on average 46878 SEK lower in Teckomatorp</p><p>than in the two control towns.</p>

<p>This thesis is based on nine research publications (<b>I – IX</b>) on structure and reactivity of RNA vis-à-vis DNA. The DNA and RNA are made of flexible pentose sugar units, polyelectrolytic phosphodiester backbone, and heterocyclic nucleobases. DNA stores our genetic code, whereas RNA is involved both in protein biosynthesis and catalysis. Various ligand-binding and recognition properties of DNA/RNA are mediated through inter- and intra-molecular H-bonding and stacking interactions, beside hydration, van der Waal and London dispersion forces. In this work the pH dependant chemical shift, p<i>K</i>_a values of 2'-OH group as well as those the nucleobases in different sequence context, alkaline hydrolysis of the internucleotidic phosphodiester bonds and analysis of NOESY footprints along with NMR constrained molecular dynamics simulation were used as tools to explore and understand the physico-chemical behavior of various nucleic acid sequences, and the forces involved in their self-assembly process. <b>Papers I – II</b> showed that the ionization of 2'-OH group is nucleobase-dependant. <b>Paper III</b> showed that the chemical characters of internucleotidic phosphate are non-identical in RNA compared to that of DNA. <b>Papers IV – VI</b> show that variable intramolecular electrostatic interactions between electronically coupled nearest neighbor nucleobases in a ssRNA can modulate their respective pseudoaromatic character, and result in creation of a unique set of aglycons with unique properties depending on propensity and geometry of nearest neighbor interaction. <b>Paper VII</b> showed that the cross-modulation of the pseudoaromatic character of nucleobases by the nearest neighbor is sequence-dependant in nature in oligonucleotides. <b>Paper VIII</b> showed that the purine-rich hexameric ssDNA and ssRNA retain the right-handed helical structure (B-type in ssDNA and A-type in ssRNA) in the single-stranded form even in absence of intermolecular hydrogen bonding. The directionality of stacking geometry however differs in ssDNA compared to ssRNA. In ssDNA the relatively electron-rich imidazole stacks above the electron-deficient pyrimidine in the 5' to 3' direction, in contradistinction, the pyrimidine stacks above the imidazole in the 5' to 3' direction in ssRNA. <b>Paper IX</b> showed that the p<i>K</i>_a values of the nucleobases in monomeric nucleotides can be used to show that a RNA-RNA duplex is more stable than a DNA-DNA duplex. The dissection of the relative strength of base-pairing and stacking showed that the relative contribution of former compared to that of the latter in an RNA-RNA over the corresponding DNA-DNA duplexes decreases with the increasing content of A-T/U base pairs in a sequence.</p>

<p>This thesis contains seven papers dealing with iridium and ruthenium based catalytic asymmetric reductions, either of ketones into chiral alcohols, or olefins into chiral alkanes. The first part of the thesis describes how we have designed and evaluated new bicyclic ligands containing either <i>N</i>,<i>S</i> or <i>N</i>,<i>N</i> chelating atoms. The ligands have been evaluated in the asymmetric Ir-catalyzed transfer hydrogenation of acetophenone. The complexes evaluated induced good enentioselectivity of the product. Moreover we have also utilized a commercially available chiral diamine (QCD-amine) as a ligand in the Ru-catalyzed hydrogenation of prochiral ketones, with excellent enantioselectivity for some of the substrates used. As part of this work we investigated, both theoretically and experimentally, the mechanism of this hydrogenation. Based on these results we have proposed a new reaction mechanism for this type of hydrogenations which involves active participation of the solvent in the catalytic cycle. The last part of the thesis describes the design, synthesis and evaluation of <i>N</i>,<i>P</i> and <i>N</i>₂<i>C</i>-carbene,<i>N</i> ligands for the Ir-catalyzed hydrogenation of carbon-carbon double bonds. The selectivities obtained in these investigations are among the best reported so far for a broad variation of substrates. A selectivity model for this hydrogenation has been derived and used in the rationalization of the results. As a part of this work we have synthesized and evaluated a new class of substrates, vinyl silanes, and showed that the scope of the hydrogenation reaction can be expanded to this new substrate class.</p>

<p>Flowcytometric technology has been widely used for measurement of the absolute numbers of T-lymphocytes subsets in Human Immunodeficiency virus (HIV), defining the disease state, monitoring antiviral treatment, and identifying any risk for opportunistic infections. A manual preparing of the samples is required. More recently an automated and enclosed blood cell counting, Celldyn Sapphire has been introduced. In this study the performance of the Flow cytometer EPICS XL as a reference method for analysis of CD3+, CD4+ and CD8 T-lymphocytes was evaluated with blood from 40 individual’s samples. EPICS XL was also compared with Celldyn Sapphire in the analysis of T-lymphocyte subsets in 39 blood samples from patients with low, high and normal lymphocyte counts. The result showed that the precision was high for both EPICS XL (2.5%) and Celldyn (10%). The method was linear over a wide range. Comparisons of CD3+, CD4+, and CD8+ T-lymphocytes analysis showed high coefficients of correlation (r0.9) and agreement (y>0.9x) between two instruments. A lower degree of agreement was observed at low concentration of CD3+ and CD4+ T-lymphocytes (0.757, 0.739). This means that cell counts obtained by Celldyn were 30% lower than those obtained with EPICS XL. This study shows that both EPICS XL and Celldyn Sapphire were suitable for CD4+ and CD8+ T cell counts. It is however preferable to use Flowcytometry for counting of low concentration of CD4+ T-lymphocytes (<200 cells/µL).</p>