Essays about: "air samples"

Showing result 21 - 25 of 140 essays containing the words air samples.

  1. 21. Prolongation of shelf life of minimally processed spinach by combining vacuum impregnation and electric field treatments

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Sophia Leffler; [2022]
    Keywords : spinach; pulsed electric field; moderate electric field; reversible electroporation; vacuum impregnation; shelf life; metabolic activity; respiration; food engineering; Agriculture and Food Sciences;

    Abstract : A continuous growth of the world population raises the importance of preserving food resources while maintaining their nutrient value. Leafy vegetables such as spinach are a food category which decay quickly, and a large amount ends up as food waste. READ MORE

  3. 22. In situ X-ray diffraction studies of vertically aligned CsPbBr3 nanowire arrays

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Jesper Larsson; [2022]
    Keywords : Physics and Astronomy;

    Abstract : The past decade has seen a great interest in the development of metal halide perovskite materials for use in photo-optical devices, due to the excellent photo-optical properties of these materials. The primary limitation to industrial adoption, and the subject of much research, is the susceptibility of these materials to degradation from exposure to various factors such as air, heat and moisture. READ MORE

  4. 23. The application of low-cost sensors in estimates of greenhouse gases : A field study at a wastewater treatment plant

    University essay from Linköpings universitet/Filosofiska fakulteten; Linköpings universitet/Tema Miljöförändring

    Author : Daniel Montecinos; Saga Magnusson; [2022]
    Keywords : Methane; Carbon dioxide; wastewater treatment; Low-cost sensor network; Measurement; Environmental monitoring;

    Abstract : Anthropogenic activity has caused increased concentrations of greenhouse gases (GHGs) in the atmosphere which has resulted in global warming gaining momentum. GHG emission estimates up to date are insufficient and in order to mitigate GHG emissions of anthropogenic origin fluxes of GHGs need to be mapped. READ MORE

  5. 24. Biochar and hemp as peat substitutes in organic growing media : effects on nutrient availability and nutrient uptake

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Malin Nilsson; [2022]
    Keywords : Growing media; substrate; biochar; hemp; peat substitution; nutrient availability; nutrient use efficiency;

    Abstract : This study aimed at evaluating the suitability of biochar and hemp as partial or complete replacement of peat in horticultural growing media, with specific emphasis on the effects on nutrient availability and plant nutrient uptake. The study was motivated by the environmental concerns surrounding the use of peat, along with a desire to explore possible uses for biochar and a crop residue from hemp cultivation. READ MORE

  6. 25. Identification of spectral features differentiating fungal strains in infrared absorption spectroscopic images

    University essay from Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

    Author : Dejan Stancevic; [2022]
    Keywords : Physics and Astronomy;

    Abstract : There are many unknowns regarding the interaction between fungi and their surroundings. In this project, we took a closer look at hyperspectral images of several fungal strains on two different substrates. The project mainly consisted of developing a code for the classification of fungal strains and the extraction of information from it. READ MORE