827 zoekresultaten voor “plant effects” in de Publieke website
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Enumeration and Simulation of Lattice Polymers as Models for Compact Biological Macromolecules
Promotores: H. Schiessel, G.T. Barkema
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Nanomaterial safety for microbially-colonized hosts: Microbiota-mediated physisorption interactions and particle-specific toxicity
The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.
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Growth-induced self-organization in bacterial colonies
Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.
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Peeking into the future: Fungi in the greening Arctic
Promotor: E.F. Smets, Co-promotor: J. Geml
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Cosmic tomography with weak gravitational lensing
We explored the Universe using weak gravitational lensing, a phenomenon that occurs when light from distant galaxies is bent by the gravitational fields of closer cosmic objects, much like how a lens distorts light.
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Applications of paramagnetic NMR spectroscopy for protein research
The aim of the research presented in this thesis was to develop new methods forchallenging systems in liquid-state NMR using paramagnetic effects generated by thetwo-armed probe CLaNP-5.
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Geometry of Vegetation Pattern
One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.
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Modelling the interactions of advanced micro- and nanoparticles with novel entities
Novel entities may pose risks to humans and the environment. The small particle size and relatively large surface area of micro- and nanoparticles (MNPs) make them capable of adsorbing other novel entities, leading to the formation of aggregated contamination.
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Graphene at fluidic interfaces
In this thesis unconventional tools based on fluidic interfaces were developed to study the surface and interfacial chemistry of graphene, to characterize the intrinsic properties of graphene, to disentangle the effects of substrate and of the environmental factors, and to improve handling protocols…
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Reverse engineering of drug induced QT(c) interval prolongation: Towards a systems pharmacology approach
Promotor: M. Danhof Co-promotor: O.E. Della Pasqua
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North Sea noise in the Anthropocene: an impact study of human-made impulsive sounds on free-ranging cod
Sound is everywhere in the marine environment and hearing is therefore a very important for stimuli for fish. They use sound for orientation and communication, during migration, aggregation and spawning, but also for detection of prey and predators.
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Allosteric modulation and ligand binding kinetics at the Kv11.1 channel
Promotor: Prof.dr. A.P. IJzerman, Co-Promotor: L.H. Heitman
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Global distribution patterns of distinct mycorrhizal types and ecological drivers of these patterns
What are the global relationships between environmental conditions and abundance of distinct types of mycorrhizal fungi in soil and plant roots?
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IBL krijgt fonds voor ontwikkeling resistentie test
Twee onderzoekers uit de onderzoeksgroep Plant ecology and Phytochemistry van het Instituut Biologie Leiden hebben beurs gekregen van de Stichting Technologische Wetenschappen.
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Pre- and perinatal risk factors
Effects of maternal smoking, premature birth, intra-uterine growth retardation and asphyxia on child development.
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Online Course The Great Sustainability Transition
In this course, you will learn about sustainability and staying with the environmental boundaries of our planet. You will gain an understanding of the effects of growing affluence and population growth, the key challenges we are facing, and ways to influence your direct environment.
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Beyond random and forbidden interactions : how optimizing energy gain results in morphological matching among subalpine Asteraceae and their
Plants and their pollinators form complex interaction networks. Within these networks, species differ widely in the number of species they interact with.
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Wh-island effects are similar in English and Spanish
Lezing, Com(parative) Syn(tax) Series
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Involvement of host and bacterial factors in Agrobacterium-mediated transformation
Agrobacterium tumefaciens, a gram-negative plant pathogen belonging to the family Rhizobiaceae, is the causative agent of crown gall disease, which can affect many plant species including agronomically important ones.
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Fertility and fontanels: women’s knowledge of medicinal plants for reproductive health and childcare in western Africa
Promotor: E.F. Smets, Co-promotor: T.R. van Andel
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Paul Hooykaas geïnstalleerd als Akademiehoogleraar
Vandaag, 23 september, wordt Paul Hooykaas, hoogleraar moleculaire genetica in het Instituut Biologie Leiden (IBL), geïnstalleerd als Akademiehoogleraar.
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Open label placebo voor jeuk
Positieve verwachtingen kunnen het gevoel van jeuk beïnvloeden en placebo-effecten oproepen, terwijl negatieve verwachtingen nocebo-effecten bij jeuk kunnen veroorzaken. Er zijn aanwijzingen dat placebo-effecten ook kunnen optreden wanneer mensen weten dat zij een placebo innemen. Er is weinig bekend…
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Oratie prof. dr. Bert van Duijn
Bert van Duijn is werkzaam op het gebied van planten-elektrofysiologie.
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De effecten van stress en angst op nocebo hyperalgesie
Welke rol spelen stress en angst bij de vorming van nocebo hyperalgesie?
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Photothermal circular dichroism studies of single nanoparticles
In this work, we investigate the minute circular dichroism effects of single nanoparticles.To this aim, we apply photothermal imaging with a polarization-modulated heating beam.
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Biological indicators for sustainable forest management, East Kalimantan, Indonesia. The impossible made possible?
What is vegetation structure and composition in SFM primary forest, secondary logged over forest (logging FSC certified and logging non certified) in comparison to primary forest? What is avian guild diversity in SFM primary forest, secondary logged over forest (logging FSC certified and logging non…
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Parallel developments in floral adaptations to obligate moth pollination mutualism in tribe Phyllantheae (Phyllanthaceae)
Dit paper bespreekt de co-evolutie van enkele soorten in de geslachtengroep Phyllantheae en motten van het geslacht Epicephala.
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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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Ecosia aan de Universiteit Leiden
Het Leiden University Green Office heeft goed nieuws: je kunt nu de meest milieuvriendelijke zoekmachine - Ecosia - standaard maken op een openbare LU-computer!
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Using soil inoculations for ecological restorations
How soil microbial composition impacts structure and composition of the aboveground plant and animal communities?
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Systematics and Biogeography of the Dissochaeta alliance (Melastomataceae)
Dissochaeta Blume (Melastomataceae, tribe Dissochaeteae) is well-known as a scrambling plant genus found in Southeast Asia, where it is an inhabitant of the tropical rainforests or evergreen forests.
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Richting geven aan plantengroei en -ontwikkeling
Ook planten maken groeihormonen aan, en kennen een proces van veroudering. Het bestuderen van de genen en de mechanismen hierachter is nuttig voor gewasveredeling en landbouw, maar ook voor medisch onderzoek. Dat stelt Remko Offringa, hoogleraar Ontwikkelingsgenetica van Planten.
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Decaan Geert de Snoo opent tentoonstelling biodiversiteit
De tentoonstelling Beschermde planten in de Hortus botanicus laat het belang van biodiversiteit zien aan de hand van verhalen over beschermde planten. Geert de Snoo, decaan van de faculteit der wiskunde en natuurwetenschappen en hoogleraar Conservation Biology, opende de tentoonstelling op 22 mei 2015,…
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SFA of Chlorine in Europe: A MacTempo Case-Study
An overview is given of the flows of chlorine and chlorinated hydrocarbons through the Europian Union.
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Development of nanoparticulate adjuvants based on aluminium salts
The aim of this thesis was to develop aluminium salt-based nanoparticles that may ultimately be used as adjuvant in human vaccines.
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Galaxy formation and the structure of the Universe
Promotores: Prof.dr. J. Schaye, Prof.dr. S.D.M. White (MPA Garching)
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Knowledge extraction in the quantum random-oracle model
The aim of this thesis is to present novel techniques for proving cryptographic schemes secure against quantum adversaries. Most results are within the context of an idealized model called the ‘quantum random-oracle model’.
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Optical cavities and quantum emitters
Optical cavities are useful tools to enhance the interaction between light and matter, which is important to make good quantum emitters. However, it turns out that the cavities themselves (without any quantum emitters) are already interesting objects to study.
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Research Seminar Series
For questions and suggestions regarding the series, please contact prof. dr. Olaf van Vliet or dr. Max van Lent
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Exposure and health Assessment of Persistent Organic Pollutants (POPs) at e-waste recycling site among workers in the informal sector in Nigeria
Do e-waste workers display enhanced effects of adverse health effects due to informal e-waste processing in Nigeria? Is there a difference between the health outcomes of the exposed and the control groups? Are there difference in health effects within and between job groups (collectors, dismantlers,…
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Revolutionary Turmoil and Structural Change: Ethiopia's 1974 Turning Point in a Global Perspective
Lezing, Studium Generale
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Harvesting sunlight with plants and microorganisms: imaging and metabolomics with novel microcoil and cryoprobe at ultrahigh magnetic field
Huub de Groot
- Aflevering 3: Botanisch illustreren
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Onderzoek(thema's)
Naar de planten in de tuinen en kassen van de Hortus wordt onderzoek gedaan door studenten en wetenschappers van over de hele wereld.
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Schouwburgstraat Tuin
In september 2023 zijn we begonnen met het transformeren van een onderbenutte buitenruimte in een groenere en meer biodiverse tuin waar alle studenten en medewerkers van de Schouwburgstraat kunnen ontspannen en genieten.
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Functional analysis of agrobacterium tumefaciens virulence protein VirD5
Supervisor: P.J.J. Hooykaas
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Antiquities of the rainforest: evolution of mycoheterotrophic angiosperms growing on Glomeromycota
Promotor: Prof.dr. E.F. Smets
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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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EPCEM 2001: Differences in the authorization process of GMOs in the EU and the USA
This report investigates the different approaches in the authorization process of GMOs for commercial use in the European Union and the United States of America. Three main aspects are considered and analyzed as potential causes of differences in the authorization process of GMOs for commercial use.…
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Competition on bird feeeders between introduced Ring-necked parakeets and native bird species in the Netherlands
Does the presence of Ring-necked parakeets negatively influence feeding and feeding behaviour of native bird species on artificial bird feeders and if so, what are possible solutions?