Essays about: "absorbance ratio"

Showing result 1 - 5 of 8 essays containing the words absorbance ratio.

1. 1. Biocatalysis in Pickering emulsions

   University essay from Lunds universitet/Bioteknik (master); Lunds universitet/Bioteknik (CI)

   Author : Christine Vera Isabel Schmidt; [2023]
   Keywords : Enzymes; Pickering emulsion; Amine Transaminases; Green Chemistry; Stereoselectivity; Biotechnology; Biology and Life Sciences;

   Abstract : Employing enzymes as catalysts in the production of chiral amines that are both used as building blocks and active pharmaceutical ingredients might be promising due to milder reaction conditions compared to non-biological catalysts, exclusion of heavy metals, high selectivity towards substrates and precision in chirality of the products. Transaminases are attractive for the use in this process. READ MORE

3. 2. Dissolved organic carbon (DOC) : Differences in reactivity amongst water sources to boreal streams in Sweden

   University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Author : Lukas Eriksson; [2018]
   Keywords : Dissolved organic carbon; DOC; Discrete riparian inputs; Resazurin; Resorufin;

   Abstract : The importance of dissolved organic carbon (DOC) to aquatic environments is well established in the scientific community. In boreal landscapes, small streams receive water from headwater lakes, mires, and discrete flow paths that drain riparian soils. READ MORE

4. 3. Organic matter properties and their relation to phosphorus and nitrogen concentrations in Swedish agricultural streams

   University essay from SLU/Dept. of Soil and Environment

   Author : Betty Ehnvall; [2017]
   Keywords : dissolved organic matter; excitation-emission fluorescence spectroscopy; absorbance spectroscopy; eutrophication; biogeochemistry; absorbance index; fluorescence index;

   Abstract : Many agricultural streams in Sweden exhibit high concentrations of nitrogen, phosphorus, suspended sediments and dissolved organic matter (DOM). Together these substances cause eutrophication in streams, rivers and eventually the Baltic Sea. The interactions between different fractions of DOM and nutrients are not very well understood. READ MORE

5. 4. The suitability of using Landsat TM-5 Images for estimating chromophoric dissolved organic matter in subarctic Lakes

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Julia Jakobsson; [2014]
   Keywords : CDOM; dissolved organic carbon; colored dissolved organic matter; Chromophoric; landsat thematic mapper 5; subarctic lakes; Stordalen; empirical algorithm.; Abisko; DOC; remote sensing; Physical Geography and Ecosystem Science; Earth and Environmental Sciences;

   Abstract : Recent trends of permafrost thawing in the subarctic are expected to cause increased release of dissolved organic carbon (DOC) to inland waters, which might have cascading effects on downstream aquatic ecosystems and release of CO2 to the atmosphere. This study therefore aimed at evaluating the applicability of an empirical band ratio algorithm for estimating chromophoric dissolved organic matter (CDOM; a proxy for DOC) from the easily accessible satellite images Landsat TM-5, to counter the inaccessibility of the region in general. READ MORE

6. 5. Organic carbon fluxes in a boreal catchment : spatial study of bioavailability and importance of the riparian zone

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Sonja Maehder; [2012]
   Keywords : Total organic carbon TOC; Dissolved organic carbon DOC; absorbance ratio; SUVA; riparian zone RZ; boreal catchment; RIM; Krycklan; bioavailability;

   Abstract : Organic carbon as an important water quality factor was investigated in 13 riparian zones (RZs) and 14 stream sites in the 67 km2 boreal Krycklan catchment in Northern Sweden during 2008 to 2009. For comparisons of up- and downslope locations, also three sites with different distances to the stream were analysed. READ MORE