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Found 3 essays matching the above criteria.

  1. 1. Comparison of anaerobic sludge granules from different wastewater plants with respect to granule size, substrate degradation and methanogenic community

    University essay from SLU/Department of Molecular Sciences

    Author : Jonathan Andrén; [2018]
    Keywords : anaerobic digestion; granule; UASB; EGSB; VFA; methanogen; acetoclastic; hydrogenotrophic; acetogenic; mcrA; ; T-RFLP; methanosarcina; methanosaeta;

    Abstract : Within the objective to replace fossil fuel with sustainable sources there is a growing pressure to advance such development. Anaerobic digestion (AD) is beneficial not only as a waste management technology, but also to recycle organic waste into methane which can be used for heating, production of electricity or vehicle fuel. READ MORE

  3. 2. Analysis of the methanogenic and acetogenic community structure in young calves

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Paulina Lenngren Hysing; [2016]
    Keywords : methanogen; acetogen; calves;

    Abstract : The newborn calf that has not been fed colostrum lacks immune defense and ruminal microorganisms needed for digestion of polysaccharides from plants and cellulose. Establishment of a gastrointestinal microbiota is vital. This study aimed to shed light on the establishment of the methanogenic and acetogenic community in young calves. READ MORE

  4. 3. Voice Activity Detection and Noise Estimation for Teleconference Phones

    University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

    Author : Björn Eliasson; [2015]
    Keywords : Voice Activity Detection VAD ; noise estimation; continuous noise estimation CNE ; statistical model-based VAD; improved minima-controlled recursive average IMCRA ; Rangachari noise estimation RNE or MCRA-2 ; likelihood ratio approach; signal-to-noise ratio dependent recursive average; teleconferencing;

    Abstract : If communicating via a teleconference phone the desired transmitted signal (speech) needs to be crystal clear so that all participants experience a good communication ability. However, there are many environmental conditions that contaminates the signal with background noise, i. READ MORE