Search for dissertations about: "pH stable conditions"

Showing result 11 - 15 of 72 swedish dissertations containing the words pH stable conditions.

  2. 11. Biogeochemical evidences of human intervention in a shallow lake, Zeekoevlei, South Africa

    Author : Supriyo Das; Joyanto Routh; Michael R. Talbot; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lake; primary productivity; biomarkers; stable isotopes; trace elements; phosphorus; Earth sciences; Geovetenskap; geokemi; Geochemistry;

    Abstract : This thesis describes a multi-parameter biogeochemical investigation in a shallow hyper-eutrophic freshwater coastal lake, Zeekoevlei, in South Africa. The predominance of autochthonous algal-derived organic matter in lake sediments is indicated by low C/N, high H/C ratios and δ13Corganic values. READ MORE

  4. 12. Modelling and control of microbial fed-batch and pH-auxostat processes

    Author : Thi Bich Hop Pham; KTH; []
    Keywords : ;

    Abstract : Glucose and energy metabolism ofSaccharomyces cerevisiaehas been studied for decades,yet the exact location of the so called "bottleneck" thatcauses overflow metabolism resulting in aerobic ethanolformation remains unknown. However, this does not completelyhamper the modelling, simulation and development of methods tocontrol the aerobic ethanol formation under processconditions. READ MORE

  5. 13. The direct current electroretinogram and the standing potential of the rabbit under different stimulus and adapting conditions

    Author : Eva Gottvall; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : The electroretinograrn (ERG) reflects the summation of electrical responses generated by neurons and non-neuronal cells in the retina and pigment epithelium in response to light. The major ERG components are the fast, negative a-wave, the fast, positive b-wave and the slow, positive c-wave. READ MORE

  6. 14. Cross-Processing Fish Co-Products with Plant Food Side Streams or Seaweeds Using the pH-Shift Method - a new sustainable route to functional food protein ingredients stable towards lipid oxidation

    Author : Jingnan Zhang; Chalmers tekniska högskola; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; valorization; pomaces; protein techno-functionality; press cakes; by-products; fish protein; fruit; natural antioxidants; lipid oxidation; berry; protein gels;

    Abstract : The seafood value chain is highly inefficient as 50-60% of the fish weight end up as co-products in the filleting operation. Despite their abundance in high-quality proteins, fish co-products mainly go to low value products such as fodder. The pH-shift process, i.e. READ MORE

  7. 15. Stable and radiogenic isotopes as tracers for geochemical processes in mineralogically-complex mine waste environments : Insights from 13C, 2H, 18O, 34S and 87Sr/86Sr

    Author : Musah Salifu; Lena Alakangas; Maria Nieves Otero Perez; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Tillämpad geokemi; Applied Geochemistry;

    Abstract : Mining and its related activities generate large volumes of mine wastes such as tailings that can have negative environmental implications. One of such mine wastes of potential environmental concern is the historical Yxsjöberg Cu-W-F skarn tailings in Sweden, which encompasses a complex mineralogy including sulphides, carbonates, silicates, oxides / wolframite and halides. READ MORE