Global ETD Search

491	Vliv zatížení spalovacího motoru na výstupní parametry traktorových souprav / Effect of engine load on the output parameters of the tractor kits Paulmichl, Roman January 2013 (has links) The thesis deals with the current situation in the construction of tractors, particularly engines and accessories. The work includes a methodology for measuring tractor rigs in traffic as well as methodology for plough/plow kits measuring. The measured values were tabulated, graphically presented and analysed. The thesis provides an overview of the issue of the combustion engine load placed on the engine by working conditions in transport, during primary soil tillage with different modes of operation of the tractor set. The thesis aim is to find out the practical effect of the engine load on the monitored parameters and to indicate possibilities for achieving higher efficiency in tractor units with minimum fuel performance
492	Vliv koeficientu redukce na zdroj ceny na výsledný index odlišnosti při komparativní metodě oceňování nemovitostí / The price source reducing coefficient impact on total index of dissimilarity by the real estate valuation comparative method Cupal, Martin Unknown Date (has links) True market prices of real estates, unlike bid prices, are often hard to reach. Nevertheless, this information is necessary for many direct and indirect real estate market subjects, especially for valuation purposes. Therefore the bid prices of concrete real estates are often used, but they are not generally equivalent market prices. And so it´s necessary to find some way to convert bid prices to market prices. This dissertation thesis shows definite approach to this issue. Market price and bid price rate is estimated by multi-dimensional linear regression model and non-linear estimations of simple regression. Multi-dimensional linear regression model estimates the values of this rate from other variables, like supply duration, price line according to localities and other. Non-linear estimations of regression function were used for the trend bid and market price modelling in dependence on number of the population in various localities.
493	Enhancing and Expanding Conventional Simulation Models of Refrigeration Systems for Improved Correlations Murgham, Haithem Abualasaad January 2018 (has links) No description available. Mechanical Engineering Engineering Energy Endocrinology Conservation Condensation Computer Engineering Design Environmental Education Environmental Economics Environmental Engineering Environmental Science refrigeration systems simulation mode ice machine economizer brazed-plate heat exchanger reducing energy harvest mode, waste heat recovery heat recovery strategy physics-based
494	Effects of weight loss and exercise on chemerin serum concentrations and adipose tissue expression in human obesity Chakaroun, Rima 14 January 2015 (has links) (PDF) Chemerin is a chemoattractant adipokine that regulates adipogenesis and may induce insulin resistance. Chemerin serum concentrations are elevated in obese, insulin-resistant, and inflammatory states in vivo. Here we investigate the role of omental (OM) and subcutaneous (SC) adipose tissue chemerin and CMKLR1 messenger RNA (mRNA) expression in human obesity. In addition, we test the hypothesis that changes in chemerin serum concentrations are primarily associated with reduced body fat mass in the context of 3 weight loss intervention studies. Chemerin serum concentration was measured in 740 individuals in a cross-sectional (n = 629) study including a subgroup (n = 161) for which OM and SC chemerin mRNA expression has been analyzed as well as in 3 interventions including 12 weeks of exercise (n = 60), 6 months of calorie-restricted diet (n = 19) studies, and 12 months after bariatric surgery (n = 32). Chemerin mRNA is significantly higher expressed in adipose tissue of patients with type 2 diabetes mellitus and correlates with circulating chemerin, body mass index (BMI), percentage body fat, C-reactive protein, homeostasis model assessment of insulin resistance, and glucose infusion rate in euglycemic-hyperinsulinemic clamps. CMKLR1 mRNA expression was not significantly different between the 2 fat depots. Obesity surgery–induced weight loss causes a significant reduction on both OM and SC chemerin expression. All interventions led to significantly reduced chemerin serum concentrations. Decreased chemerin serum concentrations significantly correlate with improved glucose infusion rate and reduced C-reactive protein levels independently of changes in BMI. Insulin resistance and inflammation are BMI-independent predictors of elevated chemerin serum concentrations. Reduced chemerin expression and serum concentration may contribute to improved insulin sensitivity and subclinical inflammation beyond significant weight loss. Type 2/blood Diet Messenger/biosynthesis Receptors Chemokine/biosynthesis Receptors human Chemokines Insulin RNA Messenger Receptors Chemokine chemerin human Type 2/blood Diet Messenger/biosynthesis Receptors Chemokine/biosynthesis Receptors human Chemokines Insulin RNA Messenger Receptors Chemokine chemerin human ddc:610
495	Reducing turbulence- and transition-driven uncertainty in aerothermodynamic heating predictions for blunt-bodied reentry vehicles Ulerich, Rhys David 24 October 2014 (has links) Turbulent boundary layers approximating those found on the NASA Orion Multi-Purpose Crew Vehicle (MPCV) thermal protection system during atmospheric reentry from the International Space Station have been studied by direct numerical simulation, with the ultimate goal of reducing aerothermodynamic heating prediction uncertainty. Simulations were performed using a new, well-verified, openly available Fourier/B-spline pseudospectral code called Suzerain equipped with a ``slow growth'' spatiotemporal homogenization approximation recently developed by Topalian et al. A first study aimed to reduce turbulence-driven heating prediction uncertainty by providing high-quality data suitable for calibrating Reynolds-averaged Navier--Stokes turbulence models to address the atypical boundary layer characteristics found in such reentry problems. The two data sets generated were Ma[approximate symbol] 0.9 and 1.15 homogenized boundary layers possessing Re[subscript theta, approximate symbol] 382 and 531, respectively. Edge-to-wall temperature ratios, T[subscript e]/T[subscript w], were close to 4.15 and wall blowing velocities, v[subscript w, superscript plus symbol]= v[subscript w]/u[subscript tau], were about 8 x 10-3 . The favorable pressure gradients had Pohlhausen parameters between 25 and 42. Skin frictions coefficients around 6 x10-3 and Nusselt numbers under 22 were observed. Near-wall vorticity fluctuations show qualitatively different profiles than observed by Spalart (J. Fluid Mech. 187 (1988)) or Guarini et al. (J. Fluid Mech. 414 (2000)). Small or negative displacement effects are evident. Uncertainty estimates and Favre-averaged equation budgets are provided. A second study aimed to reduce transition-driven uncertainty by determining where on the thermal protection system surface the boundary layer could sustain turbulence. Local boundary layer conditions were extracted from a laminar flow solution over the MPCV which included the bow shock, aerothermochemistry, heat shield surface curvature, and ablation. That information, as a function of leeward distance from the stagnation point, was approximated by Re[subscript theta], Ma[subscript e], [mathematical equation], v[subscript w, superscript plus sign], and T[subscript e]/T[subscript w] along with perfect gas assumptions. Homogenized turbulent boundary layers were initialized at those local conditions and evolved until either stationarity, implying the conditions could sustain turbulence, or relaminarization, implying the conditions could not. Fully turbulent fields relaminarized subject to conditions 4.134 m and 3.199 m leeward of the stagnation point. However, different initial conditions produced long-lived fluctuations at leeward position 2.299 m. Locations more than 1.389 m leeward of the stagnation point are predicted to sustain turbulence in this scenario. / text Atmospheric reentry B-spline collocation Channel flow Cold wall Direct numerical simulation Energy perturbation method Favorable pressure gradient Flat plate Homogenized boundary layer Inviscid base flow Isothermal wall Low Reynolds number Manufactured solution NASA Orion Negative displacement thickness Predictive computation Pseudospectral method Radial nozzle Reducing uncertainty Reentry vehicle Relaminarization Sampling uncertainty Simulation framework Slow growth formulation Software verification Transition modeling Turbulence budgets Turbulent boundary layer Wall blowing Wall transpiration
496	Microbial sulfate reduction in the tissue of the cold-water sponge Geodia barretti (Tetractinellida, Demospongiea) / Mikrobielle Sulfatreduktion im Gewebe des Kaltwasserschwammes Geodia barretti (Tetractinellida, Demospongiae) Hoffmann, Friederike 06 May 2003 (has links) No description available. 550 Geowissenschaften Mathematics and Computer Science Porifera Invertebraten marin Norwegische See boreal Histologie Fluroeszenz in situ Hybridisierung FISH Einbetten von Gewebe Heilung Regeneration Reproduktion Sulfatreduktion sulfatreduzierende Bakterien Invertebrat-Bakterien-Symbiose Biogeochemie Schwefelkreislauf Sulfatreduktionsrate Mikroelektrode porifera invertebrates marine Norwegian Sea boreal histology fluorescence in situ hybridization FISH tissue embedding cicatrisation regeneration reproduction sulfate reduction sulfate reducing bacteria invertebrate-microbe symbiosis biogeochemistry sulfur cycle sulfate reduction rate microelectrode 42.21 42.15 42.21 42.72 38.19 58.30 VU WB WH WN WR WY
497	Effects of weight loss and exercise on chemerin serum concentrations and adipose tissue expression in human obesity Chakaroun, Rima 13 January 2014 (has links) Chemerin is a chemoattractant adipokine that regulates adipogenesis and may induce insulin resistance. Chemerin serum concentrations are elevated in obese, insulin-resistant, and inflammatory states in vivo. Here we investigate the role of omental (OM) and subcutaneous (SC) adipose tissue chemerin and CMKLR1 messenger RNA (mRNA) expression in human obesity. In addition, we test the hypothesis that changes in chemerin serum concentrations are primarily associated with reduced body fat mass in the context of 3 weight loss intervention studies. Chemerin serum concentration was measured in 740 individuals in a cross-sectional (n = 629) study including a subgroup (n = 161) for which OM and SC chemerin mRNA expression has been analyzed as well as in 3 interventions including 12 weeks of exercise (n = 60), 6 months of calorie-restricted diet (n = 19) studies, and 12 months after bariatric surgery (n = 32). Chemerin mRNA is significantly higher expressed in adipose tissue of patients with type 2 diabetes mellitus and correlates with circulating chemerin, body mass index (BMI), percentage body fat, C-reactive protein, homeostasis model assessment of insulin resistance, and glucose infusion rate in euglycemic-hyperinsulinemic clamps. CMKLR1 mRNA expression was not significantly different between the 2 fat depots. Obesity surgery–induced weight loss causes a significant reduction on both OM and SC chemerin expression. All interventions led to significantly reduced chemerin serum concentrations. Decreased chemerin serum concentrations significantly correlate with improved glucose infusion rate and reduced C-reactive protein levels independently of changes in BMI. Insulin resistance and inflammation are BMI-independent predictors of elevated chemerin serum concentrations. Reduced chemerin expression and serum concentration may contribute to improved insulin sensitivity and subclinical inflammation beyond significant weight loss. info:eu-repo/classification/ddc/610 ddc:610
498	Identifikation von Genen und Mikroorganismen, die an der dissimilatorischen Fe(III)-Reduktion beteiligt sind / Isolation of Genes and Microorganisms Involved in Dissimilatory Fe(III)-Reduction Özyurt, Baris 21 January 2009 (has links) No description available. 500 Naturwissenschaften allgemein Mathematics and Computer Science Metagenomik dissimilatorische Fe(III)-Reduktion Dissimilatory iron reduction DIR dissimilatory oxido-reduction of iron dissimilatory iron(III) reduction metal reduction ferricironreduction microbial iron respiration bacterial respiration microorganisms for energy production dissimilatory iron reducing bacteria dissimilatory metal reducing bacteria DMRB energy production electricity energy transduction microbial electricity electron donor electron acceptor electron transfer carbon source carbohydrate mannit mannitol biofilm mineral mineral formation microbial degradation ribosomal proteins cytochromes hypothetical proteins enzymes oxidation reduction ferric iron iron oxide Fe(II) Fe(III) soluble iron insoluble iron ferric reductase activity iron mineral formation mineralisation <i>E. coli</i> Escherichia coli environmental microorganisms life in extreme environments uncultivable bacteria soil microbial ecology anaerobic growth anaerobic incubation environmental sequences environmental DNA DNA extraction functional screening metagenomic metagenome meta-genome microbial ecology environmental genomics soil metagenome BACs sequencing bioinformatics microbial communities 16S rRNA phylogenetics 30 42.30 42.30 58.30 42.49 58.30 42.13 RA W
499	Snižování hluku kolejových vozidel v traťových obloucích / Reduction of noise of the railway vehicles in line arcs Navrátil, Václav January 2019 (has links) reducing noise, noise in railway transport, management of application of products for modification of adhesion
500	Developing Skills for Successful Learning Swersky, Liz 20 March 2012 (has links) (PDF) No description available. effektiver Lehrmethoden aktiv und kreativ im Lernen bessere Qualität der Lehre Anfangsjahre verbesserte Schülerleistung Edupeg-Projekt in Südafrika Ausdauer Gedächtnisleistung soziale Kompetenz Selbstvertrauen Selbstwertgefühl kognitive Fähigkeiten visuelle Wahrnehmung Rechnen Lebenskompetenzen intuitives Wissen des Kindes kreatives Denken genaues schriftliche Arbeiten fließend sprechen Wortschatz geschriebene Sprache Geschichten erzählen Muttersprache Denkvermögen Techniken zur Problemlösung Problemlösungsstrategien Entscheidungsfindung Selbstvertrauen stärken Disziplinprobleme vermindern Tempo und Inhalt des Unterrichts der am langsamsten lernende Schüler praktische Erfahrungen positive Lernerfahrungen aktiveres Engagement im Unterricht more effective teaching methods improved quality of teaching early years improved pupil performance Edupeg perseverance memory skills social skills self-confidence self-esteem cognitive skills visual perception numeracy life skills child's intuitive knowledge creative thought accurate written work fluency of language vocabulary written language story-telling mother tongue thinking skills problem solving techniques problem solving strategies decision making promotes self-reliance discipline problems diminish pace and content of the lesson the slowest learner practical experiences positive learning experiences more actively engaged in teaching ddc:510 rvk:SD 2011

Search results