41 zoekresultaten voor “nitrogen deposition” in de Publieke website
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Soil and crop management options to improve nitrogen cycling on dairy farms on peat soil
The main research question of this thesis was: Can nitrogen cycling on dairy farms on peat soil in the Dutch Green Heart area be improved by adapting management to the nitrogen supply from soil and by using other grassland species and crops without affecting milk production?
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Impact of nitrogen fertilization on the soil microbiome and greenhouse gas emission
The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.
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imaging of spin waves and magnetic phase transitions with nitrogen-vacancy centers in diamond
The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.
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Assessing global regionalized impacts of eutrophication on freshwater fish biodiversity
Freshwater biodiversity has been threatened by eutrophication due to excessive nutrients in the environment. Releasing the freshwater species from such pressures requires efforts from industry and manufacturers to avoid emissions to vulnerable and high-risk regions.
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Chemical functionalization of the graphene surface for electrical and electrochemical sensing application
Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.
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Photosynthetic light reactions at the gold interface
Promotor: T.J. Aartsma, Co-promotor: R.N. Frese
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Coiled-coil mediated liposomal fusion: Asymmetric behaving peptide fusogens
Membrane fusion is a vital process in living organisms and is mediated by zipper-like proteins.
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Synthetic, Physical and Computational Chemistry of Propeller-shaped Polycyclic Aromatic Hydrocarbons
This thesis systematically studies the physicochemical properties of non-planar, propeller-shaped, polycyclic aromatic hydrocarbons. The synthesis of several so-called propellerenes is described on a gram scale, using optimized procedures aimed at using less hazardous reagents and reducing the amount…
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Linking 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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Electrochemical and surface studies of the effect of naphthalene-based additives on tin electrodeposition
Tin electrodeposition applications have rapidly evolved in the past 25 years.
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Atom addition reactions in interstellar ice - new pathways towards molecular complexity in space -
Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen
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Linking simple molecules to grain evolution across planet-forming disks
Planets are formed in disks of gas and dust around young stars.
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The evolution of shell form in tropical terrestrial microsnails
Promotor: Prof.dr. M. Schilthuizen
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Substances from Cradle to Grave
Materials balances have been used in the recent past for the analysis of substance oriented environmental problems and the formulation of measures for environmental policy. In this study an integrated tool, based on the materials balance principle, has been developed for the analysis of both environmental…
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Conductance and gating effects at sputtered oxide interfaces
This thesis explores interfacial conductance and electric field-effects in LaAlO3/SrTiO3 heterostructures.
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Berent Baris
Wiskunde en Natuurwetenschappen
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Hoe stellen we ambitieuze doelen voor duurzame landbouw
De voedselproductie in Nederland is een economisch succes, maar heeft geleid tot veel milieuproblemen, waaronder stikstofvervuiling. Onlangs keurde de hoogste rechter het beleid af dat economische groei en vermindering van de stikstofverliezen combineerde. Hierdoor belandde het land in een stikstofcrisis.In…
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De economie van de landbouw
Hoe zorgen we beter voor boer en aarde? In S&D, het tijdschrift van de Wiardi Beckman Stichting, proberen hoogleraar Jan Willem Erisman (Centrum Milieuwetenschappen Leiden) en landbouweconoom Krijn Poppe (Raad voor de leefomgeving en infrastructuur) deze vraag te beantwoorden.
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Biophysical feedbacks between seagrasses and hydrodynamics in relation to grazing, water quality and spatial heterogeneity
Consequences for sediment stability and seston trapping
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Imaging complex model catalysts in action
From surface science towards industrial practice using high-pressure scanning tunneling microscopy.
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Superstructures of lipids and graphene
This thesis systematically analyzes the physical-chemistry of lipid-graphene interactions with the major objective of reconciliating the variety of results reported in the literature.
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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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Magnetic Resonance Force Microscopy and the Spin Bath
There are many interpretations of quantum mechanics, and ultimately experiments are needed to verify or falsify these interpretations.
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Bridging the gap between physics and chemistry in early stages of star formation
A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.
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Machine learning-based NO2 estimation from seagoing ships using TROPOMI/S5P satellite data
The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.
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Pushing the characterization of exoplanet atmospheres down to temperate rocky planets in the era of JWST
One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.
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Heterogenized molecular (pre)catalysts for water oxidation and oxygen reduction
Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.
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Growth and Transport properties of (Rare Earth)TiO3 / SrTiO3 interfaces
This thesis presents the results of a study on the interfaces of insulating oxides with and without the insertion of a magnetic layer.
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Astrophysical plasma modeling of the hot Universe: Advances and challenges in high-resolution X-ray spectroscopy
Hot astrophysical plasma is ubiquitous in the Universe, from comets in our Solar system to the largest scale structures -- the cosmic web filaments. These hot plasmas, with the temperature of a few millions of degrees, are often observed in the X-ray wavelength range.
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Semi-empirical approach to the simulation of molecule-surface reaction dynamics
Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.
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The Interactions of Human Mobility and Farming Systems and Impacts on Biodiversity and Soil Quality in the Western Highlands of Cameroon
Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh
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Inhibitors and probes targeting mannanases
This thesis describes the synthesis and biochemical evaluation of a variety of cyclophellitol based activity-based probes and inhibitors targeting various endo- and exo-acting retaining glycosidases. In the last two decades a variety of probes and inhibitors for (hemi)cellulose degrading enzymes have…
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Tycho Jongenelen
Wiskunde en Natuurwetenschappen
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Een chemische stof die leven geeft en kapotmaakt: Jan Willem Erisman over ammoniumnitraat
Naar aanleiding van de explosie in Beirut maakte BBC podcastserie 'The Foodchain' een aflevering over de chemische stof die de explosie veroorzaakte: ammoniumnitraat. Deze stof wordt veelvuldig gebruik in kunstmest. Met Hoogleraar Environmental sustainability Jan Willem Erisman spraken ze over de effecten…
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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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Nederlands Kunsthistorisch Jaarboek - Call for Papers
Volume 72 of the Netherlands Yearbook for History of Art is dedicated to the relationship of art and death in the Low Countries and its diaspora, from premodern times to the present. The editors welcome contributions on works of art and architecture (paintings, prints, sculptures, objects of applied…
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Vier Vici’s voor Leidse wetenschappers
Chemicus Alexander Kros en astronoom Joop Schaye maken deel uit van de vier Leidse wetenschappers die dit jaar uit de Vernieuwingsimpuls van NWO een Vici toegekend hebben gekregen. Met deze subsidie van anderhalf miljoen kunnen ze een eigen onderzoeksgroep opzetten en promovendi aanstellen.
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De productie van dunne films ‘live’ volgen
Tot nu toe verliepen processen van het maken van ‘dunne films’ – met toepassingen in bijvoorbeeld smartphones en zonnebrillen - volgens de ‘trial and error’-methode. Vincent Fokkema van het Leids Instituut voor Onderzoek in de Natuurkunde heeft nu een uniek instrument ontwikkeld waarmee de processen…
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Tollend elektron op de nanometer nauwkeurig te verplaatsen
Het is een team van onderzoekers gelukt om een enkel spinnend elektron te positioneren op een chip met een precisie van enkele nanometers. Hiermee ligt de weg open naar quantumchips met nano-elementen naar keuze. De resultaten zijn gepubliceerd in het gerenommeerde Applied Physics Letters.
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Just Energy Transitions for Europe and Beyond: Call for Abstracts
Submissions are sought for a special issue with Frontiers in Political Science that explores the conceptual and practical aspects of a ‘just’ energy transition both within and beyond Europe. In particular, contributions to the theoretical and interdisciplinary foundations of just transitions, as well…
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SUNRISE: van zonlicht tot smart city
Het Europese project SUNRISE - ‘zonne-energie voor een circulair economie’, is geselecteerd als één van de zes Coördinatie- en Ondersteuningsacties (CSA) binnen het Horizon 2020-programma van de Europese Commissie. Het project ontvangt een subsidie van 1 miljoen euro en zal de basis leggen voor een…