192 search results for “biomass residues” in the Public website
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Development of life cycle assessment for residue-based bioenergy
Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs
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Development of life cycle assessment for residue-based bioenergy
What are the key issues in conducting LCA of bioenergy systems? What is the environmental sustainability status of second generation bioethanol? How much would the final results of biogenic carbon neutrality assumptions deviate from the true values based on a complete inventory? How to assess the impact…
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The unit residue group
The unit residue group, to which the present thesis is devoted, is defined using the norm-residue symbol, which Hilbert introduced into algebraic number theory in 1897.
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Discovery and exploitation of the transcriptional regulatory system of pectinases in Aspergillus niger
Pectin is a plant cell wall polysaccharide made of mainly D-galacturonic acid (GA) subunits. The potency of the filamentous fungus Aspergillus niger to naturally secrete high amounts of pectinases to degrade pectin has been utilized for the industrial production of pectinases.
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On the computation of norm residue symbols
An algorithm is discussed to compute the exponential representation of principal units in a finite extension field F of the p-adic rationals.
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Chitin in the fungal cell wall: towards valorization of spent biomass of Aspergillus niger
Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.
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for community ecology; a next generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
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soil microbial community dynamics to N2O emission after bioenergy residue amendments
Vinasse is a major by-product generated by the sugarcane biofuel industry. It is a source of microbes, nutrients and organic matter and often it is recycled as fertilizer.
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NWO-grant for degration of biomass
Dr. Erik Vijgenboom (IBL) and Dr. Peter Punt (IBL/TNO) obtained a new NWO-grant for their project FILAZYME to develop filamentous micro-organisms for enzyme production to degrade biomass.
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CO2-Calculator
Development of GHG calculator for bio-electricity and heat.
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Development of homogeneous catalysts for the selective conversion of levulinic acid to caprolactam
Promotors: Prof.dr. E. Bouwman, Prof.dr. E. Drent
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Hunter-gatherer toolkits and tasks: detecting microwear traces and residues on Northwestern European Mesolithic artefac
Prof.dr. Annelou van Gijn has obtained a Marie Curie subsidy for research on wetland activity patterns in Mesolithic Northwest Europe. This funding has been used to employ the researcher dr. Aimée Little. The project will commence in November 2011.
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Laboratory for Artefact Studies
Commercial enterprises who want to make use of the expertise and facilities are referred to LAB , the commercial unit responsible for specialized laboratory work.
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Annelou van GijnFaculteit Archeologie
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Papyri: the written residue of daily life during the formative period of Islam
How did people experience Islam on a day-to-day basis in the early centuries of Islam? That's where the papyri come in, says professor of Arabic Petra Sijpesteijn in the fourth video of the Leiden | Islam interview series.
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Valerio GentileFaculteit Archeologie
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Geeske LangejansFaculteit Archeologie
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What’s in a plant?
Tracking early human behaviour through plant processing and -exploitation.
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What to do with the fruit residue from oil palm seeds: refine it into bio-ethanol or use it as fertilizer?
When oil is harvested from the seeds of the oil palm tree, the fruit residue can be used to make bio-ethanol. However, it can also be used as a fertilizer on palm tree plantations; which option is best for the environment? Edi Wiloso compared the two green options at the Institute of Environmental Sciences…
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BioSustain
Examining the sustainability aspects of biotechnology, especially those related to the production of ethanol from biomass.
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Regulation of enzyme production in fungal cell factories
Our object is to identify and characterize transcription factors involved in lignocellulosic biomass degradation in the filamentous fungus Aspergillus niger.
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Novel approaches to develop filamentous micro-organisms for enzyme production (FILAZYME)
Can we develop new enzymes and cell factories to upgrade current enzyme cocktails towards complete degradation of biomass?
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The unit residue group
PhD Defence
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Phenotypic engineering of photosynthesis related traits in Arabidopsis thaliana using genome interrogation
Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal
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Analysis of Energy Systems
The Institute of Environmental Sciences has carried out and participates in several projects that deal with the analysis of energy systems.
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Scanning mutagenesis in a yeast system delineates the role of the NPxxY(x)(5,6)F motif and helix 8 of the adenosine A(2B) receptor in G protein
Source: Biochem Pharmacol, Volume 95, Issue 4, pp. 290-300 (2015)
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On the computation of norm residue symbols
PhD Defence
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Effects of glufosinate-ammonium on off crop vegetation
Description of Effects of glufosinate-ammonium on off crop vegetation.
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Inverse problems for universal deformation rings of group representations
Promotor: P. Stevenhagen, Co-promotores: B. de Smit, F. Andreatta
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The activation mechanisms of G protein-coupled receptors: the case of the adenosine A2B and HCA2/3 receptors
Promotor: A.P. IJzerman
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Discovery and development of inhibitors selective for human constitutive proteasome and immunoproteasome active sites
This thesis describes the design and development of subunit‐selective inhibitors of particular catalytically active subunits of human constitutive proteasomes and immunoproteasomes.
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Scalable organic solvent free supercritical fluid spray drying process for producing dry protein formulations
In this study, we evaluated the influence of supercritical carbon dioxide (scCO2) spray drying conditions, in the absence of organic solvent, on the ability to produce dry protein/trehalose formulations at 1:10 and 1:4 (w/w) ratios.
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Waste Separation
What is better for waste recycling: a plastic, paper or ceramic cup? A bio-based or fossil-based coating? Waste sorting at the source or at a recycling facility? Ask ten experts and you will get ten different opinions. We can all agree on one thing: doing nothing is not an option. Thus, Leiden University…
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Master Projects
Master projects are available in
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A yeast screening method to decipher the interaction between the adenosine A2B receptor and the C-terminus of different G protein α-subunits
Source: Purinergic Signal., Volume 10, Issue 3, pp. 441-53 (2014)
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Chitin in the fungal cell wall: towards valorization of spent biomass of Aspergillus niger
PhD Defence
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Starchy foodways: surveying indigenous botanical foods during the advent of European encounters in the northern and circum-Caribbean
How do the starchy botanical foodways reflect upon previous archaeological understandings in the northern and circum-Caribbean?
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Education
The programme’s courses deal with current approaches in material culture theory, analytical methods and techniques employed in artefact studies, and experimental archaeology.
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About the Department
Our staff has a strong international reputation and a broad research network, facilitating international student exchange. They lead projects world-wide, from France to the Caribbean, and from Ethiopia to Russia.
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The End of our Third Decade (volume II)
Papers written on the occasion of the 30th anniversary of the institute of Prehistory, Volume II.
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Images of Galois representations
Promotores: S.J. Edixhoven, P.Parent
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From the root of variation: A metabolomics perspective to plant soil-feedback
By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.
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Silva Nova – Restoring soil biology and soil functions to gain multiple benefits in new forests
We will study how inoculation of former arable land with soil (including the microbiome, soil fauna and seeds/rhizomes of ground flora) from old forests along with planting targeted tree species mixtures will improve productivity and more rapidly restore forest-adapted communities and ulttimately result…
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A study on PsbS and its role as a pH sensor
Solar energy harnessed by plants and algae has great potential to be converted into biofuels for future generations.
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Water use of electricity technologies: A global meta-analysis
Understanding the water use of power production is an important step to both a sustainable energy transition and an improved understanding of water conservation measures. However, there are large differences across the literature that currently present barriers to decision making.
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Do fungi differ? Understanding the mechanisms of mycorrhizal fungal impacts on soil C sequestration
How presence, abundance and enzymatic activities of AM and EM fungi differently affect soil carbon sequestration processes?
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Microbial communities in Pampa soils; impact of land use changes, soil type and climatic conditions
Promotor: J.A. van Veen, Co-promotor: E.E. Kuramae
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soil microbial community dynamics to N2O emission after bioenergy residue amendments
PhD Defence
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Graduate School of Science
The Graduate School of Science has a centuries-old tradition in cutting edge education and research in science.
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On Terminal Alkynes That Can React with Active-Site Cysteine Nucleophiles in Proteases
Active-site directed probes are powerful in studies of enzymatic function. We report an active-site directed probe based on a warhead so far considered unreactive.