Dissertations / Theses on the topic 'Laktest'
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Gustavsson, Jakob. "Identifiering av lakbara potentiellt farliga ämnen i gummiasfalt." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57183.
Full textThe main purpose of the project was to identify potential environmentally harmful substances which can be leached from rubber asphalt. A method for analysing asphalt was developed and three rubber asphalt materials were analysed after being cryogrinded. One of the materials was also tested in a road machine made for testing of asphalt paving. The particles created in the machine were analysed in the same manner as the cryogrinded asphalt materials.
The asphalt materials were leached by water during 24 hours. The leachates were extracted with dichloromethane, dried with sodium sulphate and concentrated to a small volume. The extracts were analysed with gas chromatography-mass spectrometry (GC-MS). Due to low concentrations of substances the GC-MS was operated in SIM-mode (Selected Ion Monitoring). Thirteen substances were chosen for the analysis. The substances were aniline, benzothiazole, butyl benzyl phthalate, bisphenol-A, decanoic acid, dibutyl phthalate, diethylhexyl phthalat, phenanthrene, chrysene, naphthalene, 4-n-nonyl phenol and 4-tert-octyl phenol. Benzothiazole and 4-tert-octyl phenol were detected and quantified in the leachates.
In addition to the analysis of organic substances, pH was measured too. The leachates produced in this project were also sent to an analysis company for several analyses, for example analysis of metals and sulphur. Toxicity tests were performed on the same leachates within an exam work made by Gro Runeman at Lund University. The results of the metal analysis, sulphur analysis, and toxicity tests are not covered within the scope of this report. For the results of these tests and analyses, see Gro Runeman’s report: Evaluating toxicity of asphalt leachates.
Detta examensarbete är utfört vid Statens Geotekniska Institut (SGI). Huvudsyftet med arbetet är att identifiera potentiellt miljöfarliga ämnen som kan laka ut från gummiasfalt. En metod för analys av asfalt har tagits fram och tre olika gummiasfalter har analyserats efter att ha kryomalts. En av dessa asfalter har också använts i en provvägmaskin där det damm som bildades har samlats upp och analyserats. Inom ramen för examensarbetet har också en litteraturstudie gjorts för att bland annat ta reda på vad som är gjort inom området sedan tidigare.
För att ta reda på vad asfalten innehåller för föreningar gjordes först en fastfasextraktion av krossad (ej kryomald) asfalt där diklormetan användes som lösningsmedel. Från början var tanken att en GC/MS-screening skulle göras för att på så sätt få en överblick av samtliga organiska ämnen som finns i asfalten men på grund av de väldigt låga halterna av i gaskromatografen analyserbara föreningar var det nödvändigt att begränsa analysen till några få föreningar. De föreningar som analysen inriktade sig mot var anilin, bensotiazol, bensylbutylftalat, bisfenol-A, dekansyra, dibutylftalat, di(etylhexyl)ftalat, fenantren, krysen, naftalen, 4-n-nonylfenol, pentaklortiofenol och 4-tert-oktylfenol.
Laktester utfördes genom att de kryomalda asfaltmaterialen lakades med vatten under 24 timmar. Efter extraktion, torkning och koncentrering analyserades lakextrakten med avseende på de föreningar som hittats vid fastfasextraktionen. I lakvattnen hittades bensotiazol samt 4-tert-oktylfenol. Dessa föreningar kvantifierades genom att en enpunktskalibrering gjordes.
Utöver analyserna ovan mättes även pH på lakvattnen. Lakvattnen skickades också på metall- och svavelanalys samt turbiditets- och fenolindexmätning till ett större analysföretag. Toxicitetstester har utförts på samma lakvatten av Gro Runeman inom ramen för ett examensarbete vid Lunds Universitet. För resultaten från toxicitetstester, metallanalyser samt turbiditets- och fenolindexmätningar hänvisas till Gro Runemans rapport: Evaluating toxicity of asphalt leachates. Delar av denna rapport är skrivna i samarbete med Gro Runeman.
Maier, Sara. "Slagg från ArcFume-processer : lakbarhet och återvinningsmöjlighete." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-248039.
Full textPrimarily mined and extracted metals are in nature often found together with many other metals in ores and minerals. Therefore, waste from the metal industry might have a varied content of many different metals. These metals are often harmful to the environment and can cause problems. For the metal producers, there is a problem if the metal content in their waste is higher than what is accepted on landfills. There are accurate metallurgical processes to recover the valuable metals from the waste and produce a slag with a low metal content that also is leach stable. Such a leach stable slag might have environmental advantages though it could replace natural material such as gravel as a filler or in other construction purposes. In this project, two slags resulting from the treatment of metal-containing wastes has been studied. For both slags, the metal content and the leachability were analyzed and the results were compared against some selected criteria. The waste regulation declares limits for the total content of metals for which the waste can be considered non-hazardous. Also, there is acceptance criteria on landfills for waste in different hazard classes. The acceptance criteria describes limits for the concentration of metals in the leachate at L/S ratio of 0.1 l/kg, and the cumulative leached amount at L/S ratio of 10 l/kg. The leachability was studied with two different methods. At an accredited laboratory, a standardized percolation test was made. In such tests, material is packed in a column and then slowly perfused with water. The concentration of various substances is measured in the leachate when predetermined volumes of water has passed through the column and can then be converted into leached amount. It is only the results of such a test that can be used to classify material according to local landfill criteria. A cheaper and easier method which can be used for comparison testing is a two stage batch test. In these tests, a weighed amount of material is shaken with a given water volume for a given time. Four repeated attempts were made for each slag and the leachates was sent to the same laboratory for analysis. The concentration in the leachate were measured and could be counted on to leached metal variety. Some differences between the two methods was noticed, but low leached amounts were measured all over and the materials met almost all criteria in order to be accepted at landfills for inert waste. The results of the percolation test showed lower leached amounts than the results of the batch test. This can be explained by the longer contact time between the water and materials in the bottles. There, an abrasion of the material that uncovers new leachable surfaces occurs. In the column, there is always new water that comes in contact with the material. Extended testing should be done to determine the total content of metals in the slags before deciding to use them in any application. Slags should not be utilized in a water protection area or other place where there is a risk for contamination of any sensitive water.
Läckgren, Robin, and Yesen Osama. "Bygg- och rivningsavfall- Hanteras kakel och klinker på rätt sätt?" Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-37798.
Full textThe construction industry deals with large quantities of construction waste. The waste is difficult to manage because of large amounts. Residual waste that comes from a construction site is recycled. Waste from construction and demolition includes many different types of pollutants causing environmental pollution. Hazardous substances likely to leach into the soil and into the wild. Structor have been thinking about if tile and clinkers tiles really are deposited in the right way today from construction waste and demolition. The purpose of this work is to investigate whether tile and clinker contains metals that can be harmful to the environment. The contents in the surface layers were measured and by performing leaching tests, we could analyze the leakage from materials in different surroundings. The samples proved that tile and clinker have high level of metals in the materials that can be given off to the environment at low pH. The conclusion from the leaching tests is that if the tiles are handled properly in the neutral or alkaline environment, it is not harmful to the environment because all results of leaching tests at pH values between eight and ten were within limits. But we see a danger if tiles end up in an acidic environment that has a low pH of around five to six. Then the tiles are not inert waste and therefore should not be handled like that. Tiles should thus not be used to such as aggregate, but it should be deposited as is done today. The work is largely based on discussions and conversations with Structor in Örebro and MTM at Örebro University.
Hietala, Sofia. "Cirkulära vägmaterial och miljö : En studie om möjlig miljöbedömning av krossad betong." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278080.
Full textIn a purely practical application of circular economics it is necessary to have knowledge of how to convert a used material into a new product. This may include legislation, but there is also a need to ensure that it cannot cause negative health or environmental consequences. Swerock strives to be able to produce circular aggregate material of surplus material from various projects, which leads to the question of how this can be environmentally assessed. Through a literature study, a compilation of knowledge was made to answer the question about which test methods Swerock can use to test materials for use in road constructions to ensure that danger to humans and the environment is avoided. The literature study in this thesis covers, inter alia, legislation, reports, studies and government documents to build a basis for a proposal for an environmental assessment procedure. A comparison was also made between the provided test results of leaching test samples from Swerock and compiled content limits from the literature. This was to illustrate the current situation and get an idea of the levels and substances that different actors have set limits for and in what ways. The study has shown that leaching tests are common for assessing the environmental impact of different types of materials and also as an approach among the End of Waste criteria. Ecotoxicological tests have not been found to be as commonly applied but have been highlighted by studies as a suitable complement to leaching tests. From the literature study, the Swedish system BASTA emerged as a way of assessing hazard in building materials, where it is based on CLP's hazard statements for health and environmental hazards. These three parts have been compiled in the environmental assessment proposal presented in the results section. One conclusion that can be made is that the work on the question of the production of circular aggregate materials is in its infancy and that there are opportunities for further studies on the subject.
Lutula, Antonio, and Kevin Thorvaldsson. "Hur utförs ett step-test i simning med hög reliabilitet? : En kvantitativ studie som fördjupar sig i Pansolds step-testprotokoll." Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4829.
Full textde, Campos Pereira Hugo. "Löslighet och transport av sällsynta jordartsmetaller i Källfallsfältets gruvsandsmagasin." Thesis, Institutionen för mark och miljö, Sveriges Lantbruksuniversitet, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-219374.
Full textSolubility and transport of rare earth elements in the mine tailings of Källfallsfältet Hugo de Campos Pereira The mechanisms which govern the solubility of rare earth elements (REEs) in sulfide-containing tailings at the former mine site of Källfallsfältet (Västmanland, Sweden) were studied by the means of soil water and ground water sampling, leaching tests and geochemical modeling using Visual MINTEQ ver. 3.0. The results showed that weathering of sulfides is the primary process governing pH in the tailings, and thus also REE solubility. However, weathering of sulfides is no source for REE in itself since the elements are not bound in sulfides, which the oxidized availability test NT ENVIR 006 showed. Instead REE are released into solution by weathering of easily weathered silicates. Usually, metal bound in silicate form is not considered geochemically active. A kinetic (time dependent) factor, associated with the weathering of silicates, was found to affect pH and thus also metal solubility in leaching tests performed on the tailings. The standardized pH static leaching test (SIS-CEN/TS 14997) showed limitations in observing kinetic effects because of its relatively short equilibration time (48 h). Thus, in future studies with similar materials, leaching test kinetics should be taken into account when comparing leached concentrations with field measured concentrations. Acid titration and one step batch test (SIS-CEN ISO/TS 21268-2:2010) proved to be applicable and relatively well applicable to the tailings, respectively, in order to estimate soil solution concentrations. Speciation calculations using Visual MINTEQ ver. 3.0 showed that pH and DOC concentration are the most important factors which affect REE speciation in soil solution, ground water and surface water associated with the tailings. In acid sulfate rich solutions, low in DOC, speciation is dominated by sulfate complexes, mainly (REE)SO4+, followed by free dissolved ions as the second most common form. These results are in accordance with previous modeling studies of REE speciation in acid sulfate rich waters resulting from tailings. This, together with previous results showing that REE ecotoxicity seems to follow the free ion model, implies that the toxicity of the elements is expected to increase with decreasing pH value.
Glanzmann, Jonas. "Bestimmung des Kristallisationsgrades von Laktose in Milchpulver /." Sion, 2007. http://doc.rero.ch/record/10761?ln=fr.
Full textGlowatzki, Fabian [Verfasser]. "Die Rolle von Laktat produzierenden Milchsäurebakterien bei Kindern mit Kurzdarmsyndrom und D- Laktat Azidose assoziierter Encephalopathie / Fabian Glowatzki." Gießen : Universitätsbibliothek, 2016. http://d-nb.info/1102854077/34.
Full textIqbal, Mustafa. "Pintas jantung paru pada bedah jantung menyebabkan gangguan metabolisme laktat di hati : infus natrium laktat hipertonik memperbaiki hemodinamik dan status asam basa." Université Joseph Fourier (Grenoble), 2002. http://www.theses.fr/2002GRE10240.
Full textBeyssell, Lena [Verfasser], Wolfgang [Akademischer Betreuer] Göpel, and Lutz [Akademischer Betreuer] Fricke. "Laktase-Persistenz und Frühgeburtlichkeit : Über die Auswirkungen des Laktase-Persistenz-Gens auf die kurz-und langfristige Entwicklung sehr kleiner Frühgeborener / Lena Beyssell ; Akademische Betreuer: Wolfgang Göpel, Lutz Fricke." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2021. http://d-nb.info/1232038903/34.
Full textZiffels, Susanne [Verfasser]. "Modifizierte Laktose zur Direkttablettierung : Untersuchungen zu Herstellung, Analytik und Tablettierbarkeit / Susanne Ziffels." Kiel : Universitätsbibliothek Kiel, 2009. http://d-nb.info/1019870001/34.
Full textFrank, Bernhard [Verfasser]. "Einfluss der Oberflächenbeschaffenheit von Laktose auf die Inhalationseigenschaften interaktiver Pulvermischungen / Frank Bernhard." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019670371/34.
Full textFurrer-Sigrist, Luzia Maria. "Antibiotika-Resistenz von E. coli und anderen Laktose-positiven Enterobakterien bei Geflügel /." [S.l : s.n.], 1995. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
Full textKoenig, Martina. "Untersuchungen zur Bildung von D-Laktat im Intestinum des Kalbes." Diss., lmu, 2006. http://nbn-resolving.de/urn:nbn:de:bvb:19-60030.
Full textKönig, Martina Gisela. "Untersuchungen zur Bildung von D-Laktat im Intestinum des Kalbes." [S.l.] : [s.n.], 2006. http://edoc.ub.uni-muenchen.de/archive/00006003.
Full textNilsson, Catja, Gabrijela Uvalic, and Aleksandra Vujic. "Laktatmätning på simmare." Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1105.
Full textDenna studie gjordes på förfrågan av en simklubb i västra Sverige. Uppgiften var att mäta
fram laktatkurvan på ett antal simmare. Önskemålet var tio (10) simmare men vi fick ett
bortfall på fyra (4) på grund av sjukdom, ovilja och tester för nära inpå mästerskap. Metoden
vi valde var laktatmätning efter varje simmat lopp. Simmarnas uppgift var att simma
progressivt 5*200m frisim. Laktatet mättes med ett instrument kallat Lactate Scout och även
pulsen togs efter varje lopp. Vi mätte laktathalten hos simmarna en och en eller två och två
beroende på hur mycket plats och tid det fanns att disponera.
Resultaten efter fyra veckor var att alla simmare hade förbättrat sitt laktatvärde det vill säga
hade sänkt och högerförskjutit laktatkurvan medan pulsen höll sig stabilt. Två av
försökspersonerna hade högerförskjuten laktatkurva, medan två andra försökspersoners hade
en liten sänkning på det fjärde loppet som inte riktigt stämde överens med den
eftersträvansvärda kurvan. De två sista försökspersonernas laktatkurvor sköt i höjden vid det
andra eller tredje loppet och sjönk under det fjärde loppet, och ökade sedan på det femte och
sista loppet.
De slutsatser vi kan dra med så få försökspersoner är att tränarnas träningsplanering för dessa
sex simmare stämde bra inför tävlingarna de hade framför sig. De fick betydligt bättre
motståndskraft mot laktatet efter fyra veckors träning.
Rantzow, Philip. "Laktat i förhållande till prestation : Aktiv återhämtningspåverkan på prestation och laktatnivå." Thesis, Linnéuniversitetet, Institutionen för idrottsvetenskap (ID), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-107417.
Full textVejvoda, Otakar. "Laktatsänkning efter ishockeyträning : studie om hur olika återhämtnings metoder påverkar laktatkoncentrationen." Thesis, Gymnastik- och idrottshögskolan, GIH, Institutionen för idrotts- och hälsovetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-2211.
Full textKristiansson, Nikki. "Kost och gruppträningsinstruktörer : en enkätstudie." Thesis, Umeå universitet, Institutionen för kostvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-111796.
Full textBackground There are numerous blogs written by people who see themselves as health authorities. They provide suggestions on how you, as a person, should eat. Within social media, this number is increasing exponentially in regards to advice. Many fitness instructors, who are easily perceived as superior in knowledge within the subject, can be a group asked for information when someone looks beyond the Swedish Food Administration for recommendations on diets and health. Hence, instructors can be a possible “channel” out for dietary advice. Objective To create an overall upper perspective on diets and female fitness instructors. Method(s) A web-based questionnaire was used and instructors from two fitness centers in Sweden were asked to participate in the study. The 101 replies were summarized and analyzed with statistical tests. Results By the instructors, 11% follow some type of diet and about 20 % exclude lactose and/or gluten. Many of the instructors have some type of nutrition education but more knowledge is desirable by the younger instructors (< 30 years)(p=<0,05). The instructors were asked questions about food and more specifically what you should eat in connection to training and/or weight loss. The instructors who have more than four classes per week were given more questions than the ones who carry out less than four classes per week (p=<0,05). Conclusion This study indicates that female group fitness instructors, to a greater extent than the population as a whole, exclude specific kinds of food. Although, to say there is a difference between fitness instructors and the population, more studies are needed. A larger study would be needed to better understand why some foods are excluded but also to explore how the instructors see themselves as a health role model and how it affects them.
Enderle, Barbara [Verfasser]. "Kontinuierliches Monitoring von Glukose, Laktat und Ammonium mit 'Bioanalytischen Mikrosystemen' / Barbara Enderle." Hamburg : Diplom.de, 2014. http://d-nb.info/1117648214/34.
Full textLennartz, Peter. "Untersuchungen zu speziellen Eigenschaften und zur inneren Struktur von Minitabletten aus Paracetamol und sprühgetrockneter Laktose." [S.l.] : [s.n.], 1998. http://www.sub.uni-hamburg.de/disse/16/inhalt.html.
Full textSchmitz, Sandra [Verfasser]. "Rekristallisation von teilamorpher und amorpher Laktose : Charakterisierung von physiko-chemischen Eigenschaften und Tablettierbarkeit / Sandra Schmitz." Bonn : Universitäts- und Landesbibliothek Bonn, 2011. http://d-nb.info/1016249012/34.
Full textReischer, Nina. "Dynamik der Serumkonzentration und Ausscheidung von D-Laktat bei jungen Kälbern mit Durchfall." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-151394.
Full textMüller, Jochen B. "Laktat- und Pyruvatspiegel bei Patienten mit degenerativer Ataxie in Ruhe und während Fahrradbelastung." [S.l.] : [s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=964953382.
Full textLundin, Anton. "Jämförelse mellan hjärtfrekvensstyrd laktattröskelträning på löpband och inomhusbana med avseende på blodlaktat, löphastighet och upplevd ansträngning." Thesis, Umeå universitet, Idrottsmedicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-74472.
Full textHelfen, Tobias. "Der exakte Volumeneffekt der Vollelektrolytlösung Ringer-Laktat unter den Bedingungen der akuten normovolämen Hämodilution." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-139394.
Full textJohnsen, Janne-Riborg [Verfasser]. "Interaktion von Laktat mit zentralen Glukosesensoren und β-Zellen des Pankreas / Janne-Riborg Johnsen." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2012. http://d-nb.info/1023329727/34.
Full textRau, Natalja [Verfasser]. "Modulation von Hunger und Nahrungsaufnahme durch Glukose und Laktat bei gesunden Probanden / Natalja Rau." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2012. http://d-nb.info/1023327511/34.
Full textStröm, Mattias. "Preanalytisk inverkan vid klinisk analys av joniserat kalcium, glukos, laktat samt zink i blodprover." Thesis, Umeå universitet, Biomedicinsk laboratorievetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-90162.
Full textFaqiryar, Marya [Verfasser], Andreas [Akademischer Betreuer] FußHöller, and Dirk [Akademischer Betreuer] Graf. "Vergleich zweier biokompatibler Laktat bzw. Bikarbonat/Laktat gepufferter Dialyselösungen mit unterschiedlichem Anteil an Glukoseabbauprodukten bezogen auf die Biokompatibilität und die peritoneale Transportcharakteristik bei PD-Patienten / Marya Faqiryar. Gutachter: Dirk Graf. Betreuer: Andreas Fußhöller." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2012. http://d-nb.info/1026965608/34.
Full textWittmann, Ronja [Verfasser]. "Amorphe Laktose - Untersuchungen zur Quantifizierung und zum Einfluss auf die Stabilität von Pulvermischungen zur Inhalation / Ronja Wittmann." Kiel : Universitätsbibliothek Kiel, 2014. http://d-nb.info/1062536037/34.
Full textHauser, Thomas. "Untersuchungen zur Validität und Praktikabilität des mathematisch bestimmten maximalen Laktat-steady-states bei radergometrischen Belastungen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-106829.
Full textSaklak, Muharrem. "Konservierung und Preservation venöser Allotransplantate mit Eigenblut und Ringer-Laktat-Lösung experimentelle Studie an humanem Venenmaterial /." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972898093.
Full textOtte, Saskia [Verfasser]. "Serum-Laktat und Plasma-Ghrelin unter Stress und stressbezogener Energiesupplementation bei normalgewichtigen jungen Männern / Saskia Otte." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2013. http://d-nb.info/1044611375/34.
Full textDempf, Stefan. "Konstruktion und Charakterisierung eines Streptococcus thermophilus-Stammes mit erhöhter Osmotoleranz und gesteigertem Kohlenstofffluss in Richtung Laktat." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:289-vts-61031.
Full textLandahl, Felix [Verfasser], and Valentin [Akademischer Betreuer] Fuhrmann. "Laktat und Laktatclearance bei kritisch kranken PatientInnen mit akut auf chronischem Leberversagen / Felix Landahl ; Betreuer: Valentin Fuhrmann." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1171427301/34.
Full textOberholzer, Thomas. "Subzelluläre Lokalisierung der proteolytischen Prozessierung der menschlichen Laktase-Phlorizin-Hydrolase und eine mögliche Rolle der Pro-Region im intrazellulären Transport /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10242.
Full textReischer, Nina [Verfasser], and Wolfgang [Akademischer Betreuer] Klee. "Dynamik der Serumkonzentration und Ausscheidung von D-Laktat bei jungen Kälbern mit Durchfall / Nina Reischer. Betreuer: Wolfgang Klee." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1029662347/34.
Full textSchneider, Carl Christoph [Verfasser], and Derek [Akademischer Betreuer] Zieker. "Einfluss von Laktat auf das Genexpressionsprofil von adulten humanen mesenchymalen Stammzellen (hMSC) / Carl Christoph Schneider ; Betreuer: Derek Zieker." Tübingen : Universitätsbibliothek Tübingen, 2012. http://d-nb.info/1160601100/34.
Full textKoch, Lena [Verfasser], Michael Gutachter] Buerke, Ursula [Gutachter] [Müller-Werdan, and Andreas [Gutachter] Simm. "Bedeutung des Laktats und der Laktatclearance bei Patienten im kardiogenen Schock / Lena Koch ; Gutachter: Michael Buerke, Ursula Müller-Werdan, Andreas Simm." Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2020. http://d-nb.info/1222974886/34.
Full textKoch, Horst Josef, and Christoph Raschka. "Standardisierte kinetische Modelle zur Beschreibung der Laktatkonzentrationszeitkurven nach akuter und subakuter ergometrischer Belastung, im Dauerleistungstest und im Laktat-Ischämietest." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-69227.
Full textLactate concentration versus time curves following acute physical exercise, the standard exercise test using increasing levels of work load and the steady state exercise test have been established methods to characterise the fitness of athletes and to control training intensity. The ischemic forearm exercise test (IFET) is used to detect metabolic disorders of muscles based on lactate and ammonia concentration during exercise under ischemia. Lactate concentration curves following acute exercise, standard ergometries and steady state tests as well as IFET are generally analysed descriptively, i. e. maximum lactate concentrations or work load with regard to defined lactate concentrations are used. The primary objective of this study was to assess pharmacokinetic models for lactate in exercise tests and to discuss the relevance in sports science. For practical purpose, the models used in acute and IFET (asymmetric peak curves), the steady state exercise test (cumulative curves) and standard exercise tests (continuously increasing function) are dealt with separately. Routine lactate profiles of 13 male nonprofessional athletes (age: 20-35) years who underwent an acute ergometry lasting 3 minutes were used to assess different pharmacokinetic models. An IFET was performed in 8 patients (Age: 20-45 years) supposed to have disorders of glucose metabolism or lack of myoadenylate deaminase. Lactate concentration versus time curves were fitted by means of non-linear regression to different kinetic models. The modified basic curve Cb(t)=Co+B*(exp(-Lp*t )-exp(-Le*t)), where Cb denotes the baseline concentration, B a constant, Le denotes the lactate elimination constant and Lp the “absorption or production” constant, yielded remarkable nonlinear regression results in for both test settings. Lactate concentration versus time curves in acute exercise tests are mostly assessed descriptively by means of parameters such as maximum concentration or workload with regard to specified lactate levels. Additional diagnostic information can be obtained, if production and elimination processes of the concentration versus time curve are separated. Production rate (Lp) and elimination rate (Le) of lactate are to define the shape of the curve. The ratio Lp/P (P=performance, work load), where Lp denotes the workload of the ergometer, can be considered as a standardized criterion of lactate production in the muscle. On the contrary, the ratio Le/P characterizes the elimination process from the vascular compartment. The corresponding half-lives [Tp, Te] are obtained using the relations Tp = ln2/Lp and Te = ln2/Le. The absolute lactate production versus time curve [Cp(t)] is given by the following equation: Cp(t) = Cb(t) + Le*( ∫Cb(t)-Co*t). The production versus time curve reaches a maximum value (Pm) after termination of the elimination process. If lactate has identical volumes of distribution (Vdl), Pm characterizes the total amount of lactate production (Ml) due to the relation Ml = Vdl*Pm. Nineteen healthy volunteers were exposed to a standardized exercise test at sea level (SLa), at an altitude of 1700 m before (1700a) and after a moderate 10 day mountain training (1700b), with a final control four weeks later at sea level (SLb). Vital signs, blood lactate and arterial oxygen saturation were determined prior, during or after the exercise test. The primary aim of the study was to fit the power function Y(X) = A+ B * X^C as a model for lactate versus workload and heart rate versus workload data. Apart from model characteristics (intercept, slope, exponent) the extent of lactate production could be estimated by the model independent characteristic AUC(70-280) (Area under the curve between 70 and 280 Watt) and the corresponding average concentration (Cm). The degree of lactate increase was characterized by means of the lactate concentration at 70 and 280 Watt (LT-70, LT-280), respectively. Apart from the standard and acute exercise test the steady state exercise test has gained increasing relevance in practice of sports medicine. So far, lactate curves of steady state tests were characterised by means of maximum. The author suggests several models, both empirical and mechanistic models, in order to fit lactate concentration versus time curves of the steady state ergometry. In addition to the maximum lactate concentration fitted nonlinear regression curves allow to assess the concentrations at defined conditions (e.g. LT20=lactate after 20 minutes of steady state workload, EC50 of the Emax model) or the slope of the curve. Moreover, the AUC(0-tx) – a measure for the extent of lactate production – can be calculated using the trapezoidal rule. In conclusion, in all lactate based tests, acute and standard ergometry, ischemic forearm test and steady state exercise test, concentration versus time data were fitted suitable pharmacokinetic models which allow to quantify and compare the results
Helfen, Tobias [Verfasser], and Markus [Akademischer Betreuer] Rehm. "Der exakte Volumeneffekt der Vollelektrolytlösung Ringer-Laktat unter den Bedingungen der akuten normovolämen Hämodilution / Tobias Helfen. Betreuer: Markus Rehm." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1020362081/34.
Full textBlatzheim, Simon [Verfasser], and KLAUS-MICHAEL [Akademischer Betreuer] BRAUMANN. "Überprüfung der Zusammenhänge des Anstiegsverhaltens von Laktat und Katecholaminen im Rahmen eines Stufentests / Simon Blatzheim. Betreuer: Klaus-Michael Braumann." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2011. http://d-nb.info/1020458542/34.
Full textGiertzuch, Stine [Verfasser], and Florian [Akademischer Betreuer] Trefz. "Untersuchungen zur prognostischen Relevanz der Plasmakonzentration von L-Laktat bei Rindern mit akutem Abdomen / Stine Giertzuch ; Betreuer: Florian Trefz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/119169190X/34.
Full textHedlund, Kristoffer, and Olle Hallkvist. "Effekterna av praktisk ocklusionsträning periodiserat med ett traditionellt styrketräningsprogram på anaerob prestation." Thesis, Umeå universitet, Idrottsmedicin, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-104098.
Full textVallström, Emelie, and Una Otterbech. "Upplevd känslighet mot födoämnen : En kvantitativ enkätundersökning bland individer från 15 års ålder." Thesis, Umeå universitet, Institutionen för kostvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-147978.
Full textStotz, Martin [Verfasser], D. [Akademischer Betreuer] Worlitzsch, G. [Akademischer Betreuer] Keyßer, and D. [Akademischer Betreuer] Hartl. "Evaluation von Laktat als Entzündungsmarker im Sputum von Patienten mit Cystischer Fibrose / Martin Stotz. Betreuer: D. Worlitzsch ; G. Keyßer ; D. Hartl." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2015. http://d-nb.info/1068208090/34.
Full textHommel, Jennifer [Verfasser], Henry [Akademischer Betreuer] Schulz, Henry [Gutachter] Schulz, and Ulrich [Gutachter] Hartmann. "Untersuchungen zum mathematisch bestimmten maximalen Laktat-Steady-State auf dem Radergometer / Jennifer Hommel ; Gutachter: Henry Schulz, Ulrich Hartmann ; Betreuer: Henry Schulz." Chemnitz : Technische Universität Chemnitz, 2020. http://d-nb.info/1219910465/34.
Full textReinhardt, Christian. "Identifikation von postoperativen kardiochirurgischen Patiententypen mittels Konfigurationsfrequenzanalyse (KFA) anhand von zentralvenösen Sauerstoffsättigungs- und gastral-tonometrischen Parametern sowie Laktat- und Base Excess-Werten." Lübeck Zentrale Hochschulbibliothek Lübeck, 2010. http://d-nb.info/1000322882/34.
Full textGranath, Malin, and Sebastian Lindén. "Laktatbestämning som prehospitalt verktyg i omhändertagandet av patienter med misstänkt sepsis : en litteraturöversikt." Thesis, Sophiahemmet Högskola, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:shh:diva-2797.
Full textMost of the Swedish ambulance service has limited access to screeningtools for efficiently identifying patients with sepsis. Lactate does accumulate in the blood as a result of hypoxia of the bodily tissues, which may occur during sepsis. Prehospital lactate reading might be a method for assisting ambulance personnel in assessing patients with sepsis. The ambulance nurse must work according to patient safety and use evidence based methods. Prehospital lactate reading is a method which should rely on a solid scientific basis to be considered as evidence based. The aim of this study was to describe the scientific basis for the benefit of prehospital lactate reading in patients with sepsis. The method chosen was a systematic literature review and data were collected via three databases; Cinahl, PubMed and SweMed+. A total of twelve scientific articles were included, all original articles written in swedish or English and published between year 2007 and 2017. The keywords were combined using boolean search operators. The material was analyzed using content analysis which resulted in forming of four themes where patterns and regularities were identified from the included studies. The result consisted of four themes; lactate and poor outcome, lactate reading associated to mortality, lactate reading contributed to early identification and reduced time to treatment of sepsis and finally; the benefit of lactate reading could not be proven. As conclusion, the result indicated that prehospital lactate reading could improve identification of septic patients and there was an association to mortality. There was not enough research available to strongly consider the method of prehospital lactate reading to be evidence based.