Essays about: "freeze test"

Showing result 16 - 20 of 29 essays containing the words freeze test.

  1. 16. Possibility of enhancing algae drying by integrating infrasound.

    University essay from KTH/Industriell ekologi

    Author : YINGZI SANG; [2017]
    Keywords : Algae storage and preservation; Infrasound; Drying method; Sustainable;

    Abstract : With the aim of designing an infrasound-integrated technology which can enhance the algae drying performance, this thesis provided the theoretical possibility of using infrasound as an algae dehydration technology. To test the relation between algae drying speed and other three parameters namely sound frequency, sound pressure and sample mass, four major experimental groups including initial experiments and core experiments with fifteen sub-experimental groups are designed. READ MORE

  3. 17. Frysning av vattenprover – effekt på vattenkemiska tidsserier

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

    Author : Jennifer Nyström; [2017]
    Keywords : Vattenkemi; Frysning; Kemisk analys; Monitoring;

    Abstract : Freezing is considered an effective preservation method for long time storage of water samples, but it may however affect the chemical composition of the sample. The aim with this study is to evaluate the effects of freezing on a restricted number of chemical variables, which are used for both research purposes as well as environmental monitoring of water quality. READ MORE

  4. 18. Geogrids in cold climate : Temperature controlled tensile tests & Half-scale installation tests at different temperatures 

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Björn Bonthron; Christian Jonsson; [2017]
    Keywords : geogrid; cold climate; low temperature; tensile test; half-scale test;

    Abstract : Due to the findings of extensive damage on geogrids used in a road embankment in northern Sweden, the Swedish Transport Administration (TRV) started to investigate the reason of these damages. Since the geogrids were installed at low temperature, below 0°C, it was suspected that the damages were connected the low temperature. READ MORE

  5. 19. Construction, programming and testing of measurement equipment for microbe culturing in space : Contribution to the MOREBAC experiment, part of the MIST-project

    University essay from Uppsala universitet/Mikrosystemteknik

    Author : Oscar Årling; [2017]
    Keywords : MOREBAC; MIST; bacteria; measurement; freeze-dried; growth; detection; Arduino; Processing;

    Abstract : Many different bacteria have essential roles in the process ofrecycling organic waste, making them useful tools when it comes toestablishing artificial ecosystems, a key technology to master inthe expansion of human space travel.In order to further investigate bacteria growth conditions duringspace travel, the MOREBAC experiment was formulated. READ MORE

  6. 20. Inverse correlation between freeze-thaw survival and storage stability of freeze-dried Lactobacillus reuteri DSM 17938 and a microcalorimetric search for GASP

    University essay from SLU/Department of Molecular Sciences

    Author : Radoslaw Sawicki; [2017]
    Keywords : freeze-drying; lyophilization; Lactobacillus reuteri; probiotic; pH; temperature; freeze-thaw; storage stability; survival; morphology; microscopy; long-term stationary phase; GASP; isothermal microcalorimetry;

    Abstract : Lactobacillus reuteri DSM 17938 is a probiotic bacterium manufactured by the company BioGaia AB and was in focus of this study. If a probiotic product is to confer its benefi-cial health effect to a consumer, it must retain high viability levels during long-term storage. READ MORE