Search Results - "Girma, Daniel"

GC/MS method for determining carbon isotope enrichment and concentration of underivatized short-chain fatty acids by direct aqueous solution injection of biogas digester samples by Mulat, Daniel Girma, Feilberg, Anders

“…In anaerobic digestion of organic matter, several metabolic pathways are involved during the simultaneous production and consumption of short-chain fatty acids…”
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Mound architecture and season affect concentrations of CO2, CH4 and N2O in nests of African fungus‐growing termites by Vesala, Risto, Räsänen, Matti, Leitner, Sonja, Daniel Girma Mulat, Lucas Mwangala, Rikkinen, Jouko, Arppe, Laura

“…Termites are a significant natural source of greenhouse gases (GHGs), but quantifying emissions especially from large termite mounds is problematic as they…”
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Quantifying Contribution of Synthrophic Acetate Oxidation to Methane Production in Thermophilic Anaerobic Reactors by Membrane Inlet Mass Spectrometry by Mulat, Daniel Girma, Ward, Alastair James, Adamsen, Anders Peter S, Voigt, Niels Vinther, Nielsen, Jeppe Lund, Feilberg, Anders

“…A unique method was developed and applied for monitoring methanogenesis pathways based on isotope labeled substrates combined with online membrane inlet…”
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Supplementation of a tropical low-quality forage with Calliandra calothyrsus improves sheep health and performance, and reduces methane emission by Mwangi, Paul M., Eckard, Richard, Gluecks, Ilona, Merbold, Lutz, Mulat, Daniel Girma, Gakige, Jesse, Marquardt, Svenja, Pinares-Patino, Cesar S.

“…Ruminant production systems in the arid and semi-arid regions of Sub-Saharan Africa confront severe challenges due to recurring droughts and the intensifying…”
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Work-related stress and associated factors among health professionals in zone 1, Afar region, Ethiopia by Yesuf, Sadat Mohammed, Derseh, Behailu Tariku, Girma, Daniel, Dejene, Tadesse Mamo

“…In developing nations like Ethiopia, the number of people suffering from work-related stress is rising at an alarming rate, and it is becoming a public health…”
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Effects of H2:CO2 ratio and H2 supply fluctuation on methane content and microbial community composition during in-situ biological biogas upgrading by Wahid, Radziah, Mulat, Daniel Girma, Gaby, John Christian, Horn, Svein Jarle

“…Commercial biogas upgrading facilities are expensive and consume energy. Biological biogas upgrading may serve as a low-cost approach because it can be easily…”
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Microbial biogas production from hydrolysis lignin: insight into lignin structural changes by Mulat, Daniel Girma, Dibdiakova, Janka, Horn, Svein Jarle

“…The emerging cellulosic bioethanol industry will generate huge amounts of lignin-rich residues that may be converted into biogas by anaerobic digestion (AD) to…”
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Enhancing methane production from lignocellulosic biomass by combined steam-explosion pretreatment and bioaugmentation with cellulolytic bacterium Caldicellulosiruptor bescii by Mulat, Daniel Girma, Huerta, Silvia Greses, Kalyani, Dayanand, Horn, Svein Jarle

“…Biogas production from lignocellulosic biomass is generally considered to be challenging due to the recalcitrant nature of this biomass. In this study, the…”
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Synergistic effects of anaerobic co-digestion of whey, manure and fish ensilage by Vivekanand, Vivekanand, Mulat, Daniel Girma, Eijsink, Vincent G.H., Horn, Svein J.

“…•Co-digestion of fish ensilage (FE), manure (M) and whey (W) was investigated.•Co-digestion resulted in BMP higher than weighted average of individual…”
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Exogenous addition of H 2 for an in situ biogas upgrading through biological reduction of carbon dioxide into methane by Mulat, Daniel Girma, Mosbæk, Freya, Ward, Alastair James, Polag, Daniela, Greule, Markus, Keppler, Frank, Nielsen, Jeppe Lund, Feilberg, Anders

“…Biological reduction of CO into CH by exogenous addition of H is a promising technology for upgrading biogas into higher CH content. The aim of this work was…”
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Mound architecture and season affect concentrations of CO 2 , CH 4 and N 2 O in nests of African fungus‐growing termites by Vesala, Risto, Räsänen, Matti, Leitner, Sonja, Mulat, Daniel Girma, Mwangala, Lucas, Rikkinen, Jouko, Arppe, Laura

“…Abstract Termites are a significant natural source of greenhouse gases (GHGs), but quantifying emissions especially from large termite mounds is problematic as…”
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Exogenous addition of H2 for an in situ biogas upgrading through biological reduction of carbon dioxide into methane by Mulat, Daniel Girma, Mosbæk, Freya, Ward, Alastair James, Polag, Daniela, Greule, Markus, Keppler, Frank, Nielsen, Jeppe Lund, Feilberg, Anders

“…[Display omitted] •Optimum H2 addition led to upgraded biogas with methane content up to 89%.•Hydrogenotrophic methanogenesis is responsible for biogas…”
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Changing Feeding Regimes To Demonstrate Flexible Biogas Production: Effects on Process Performance, Microbial Community Structure, and Methanogenesis Pathways by Mulat, Daniel Girma, Jacobi, H Fabian, Feilberg, Anders, Adamsen, Anders Peter S, Richnow, Hans-Hermann, Nikolausz, Marcell

“…Flexible biogas production that adapts biogas output to energy demand can be regulated by changing feeding regimes. In this study, the effect of changes in…”
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Diverse electron carriers drive syntrophic interactions in an enriched anaerobic acetate-oxidizing consortium by McDaniel, Elizabeth A., Scarborough, Matthew, Mulat, Daniel Girma, Lin, Xuan, Sampara, Pranav S., Olson, Heather M., Young, Robert P., Eder, Elizabeth K., Attah, Isaac K., Markillie, Lye Meng, Hoyt, David W., Lipton, Mary S., Hallam, Steven J., Ziels, Ryan M.

“…In many anoxic environments, syntrophic acetate oxidation (SAO) is a key pathway mediating the conversion of acetate into methane through obligate…”
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Early Lessons From Ethiopia in Establishing a Data Triangulation Process to Analyze Immunization Program and Supply Data for Decision Making by Almiñana, Adriana, Bayeh, Amare, Girma, Daniel, Kanagat, Natasha, Oot, Lisa, Prosser, Wendy, Dagnew, Belayneh, Ali, Disha

“…Health managers in Ethiopia used a data triangulation tool and process to prompt decision making and meaningful actions to improve immunization services…”
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Applying quality improvement tools to the Reaching Every District strategy: a mixed-methods examination of a systems strengthening approach to building the capacity of immunization managers and service providers in Ethiopia by Oot, Lisa, Adam, Zenaw, Alemayehu, Tewodros, Almiñana, Adriana, Dagnew, Belayneh, Girma, Daniel, Herrera, Elena, Kanagat, Natasha, Rogers-Bloch, Quail

“…The Reaching Every District (RED) strategy, implemented in Ethiopia for over 15 years, has helped to improve immunization performance. However, recent…”
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Rapid Chemical Characterisation of Stilbenes in the Root Bark of Norway Spruce by Off‐line HPLC/DAD–NMR by Mulat, Daniel Girma, Latva‐Mäenpää, Harri, Koskela, Harri, Saranpää, Pekka, Wähälä, Kristiina

“…INTRODUCTION: Stilbenes are plant secondary metabolites that have shown promising and varied biological activities. Stilbenes are presently actively studied…”
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Lessons Learned From Integrating Infant and Young Child Feeding Counseling and Iron-Folic Acid Distribution Into Routine Immunization Services in Ethiopia by Kanagat, Natasha, Almiñana, Adriana, Dagnew, Belayneh, Oot, Lisa, Bayeh, Amare, Girma, Daniel, Alemayehu, Tewodros, Tarekegn, Getu Molla, Tefera, Yohannes Lakew, Tadesse, Meseret Zelalem, Dimd, Hiwot Darsene, Adam, Zenaw

“…This study’s findings demonstrate that integrating counseling on infant and young child feeding and iron-folic acid supplement distribution into immunization…”
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Rapid Chemical Characterisation of Stilbenes in the Root Bark of Norway Spruce by Off-line HPLC/DAD-NMR: Rapid Chemical Characterisation of Stilbenes by Mulat, Daniel Girma, Latva-Mäenpää, Harri, Koskela, Harri, Saranpää, Pekka, Wähälä, Kristiina

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Effects of H 2 :CO 2 ratio and H 2 supply fluctuation on methane content and microbial community composition during in-situ biological biogas upgrading by Wahid, Radziah, Mulat, Daniel Girma, Gaby, John Christian, Horn, Svein Jarle

“…Commercial biogas upgrading facilities are expensive and consume energy. Biological biogas upgrading may serve as a low-cost approach because it can be easily…”
Get full text