177 zoekresultaten voor “acoustic signal” in de Publieke website
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Applications of graphene in nanotechnology : 1D diffusion, current drag and nanoelectrodes
Graphene nanoribbons (GNRs) are used as a current carrying substrate in investigation of current-induced forces in a low-temperature STM (chapter 2).
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Galaxy alignments from multiple angles
Galaxies form and live inside dark matter haloes. As a consequence, they are exposed to the tidal fields generated by the surrounding matter distribution: this imprints a preferential direction to the galaxy shapes, which leads to a coherent alignment on physically close galaxies, called intrinsic a…
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Calcium-dependent regulation of auxin transport in plant development
The plant hormone auxin regulates plant growth and development through polar cell-to-cell transport-generated maxima and minima. PIN FORMED (PIN) auxin efflux carriers determine the direction of this auxin flow through their asymmetric placement on the plasma membrane (PM).
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Electrical and magnetic properties of ferritin: electron transport phenomena and electron paramagnetic resonance
Ferritin is a spherical metalloprotein, capable of storing and releasing iron in a controllable way. It is composed of a protein shell of about 12 nm and within its cavity, iron is stored in a mineral form.
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Targeted Therapy for Triple-Negative Breast Cancer
The research described in this thesis focused on identifying novel drug targets and synergistic combinations for triple-negative breast cancer (TNBC), a virulent subtype of breast cancer with a dismal prognosis and limited therapeutic options.
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Photon detection at subwavelength scales
Promotor: Prof.dr. E. Eliel, Co-Promotor: M.J.A. de Dood
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Nuclear magnetic resonance force microscopy at millikelvin temperatures
Promotor: T.H. Oosterkamp
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Spatio-temporal aspects of antigen cross-presentation in dendritic cells: with click-to-release chemistry
The first steps are made in personalised cancer vaccination strategies, which aim to induce a more specific immune response with fewer side effects. The activation of cytotoxic T cells is crucial for an effective immune response.
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Proton transport through non-covalently functionalized graphene
Single-layer graphene (SLG) has attracted considerable interest as a proton exchange membrane for direct methanol fuel cells (DMFCs), owing to its atomic thickness, mechanical robustness, and unique proton permeability.
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In vitro investigation of the photoprotection mechanism of Light Harvesting Complex II
Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.
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Molecular and Nano-Engineering with Iron, Ruthenium and Carbon: Hybrid structures for Sensing
Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.
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Metabolomics approaches for unravelling host-gut microbiota changes in different stages of cognitive impairment
The investigation into the bidirectional communication between the gut and its host is a rapidly growing area of research, attracting considerable attention for its potential to provide crucial insights into health and disease.
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Orchid mycorrhizal interactions: evolutionary trajectories and ecological variations
The mycorrhizal symbiosis is among the most widespread species interactions on Earth. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries.
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Bayesian Inference for Gaussian Models
This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.
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Cellular Forces: Adhering, Shaping, Sensing and Dividing
Promotor: Prof.dr. T. Schmidt
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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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Balsaminaceae in Southeast Asia: systematics, evolution, and pollination biology
Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.
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The mechanical genome : inquiries into the mechanical function of genetic information
The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.
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Making the invisible visible: paramagnetic NMR and the transient protein complex
Promotor: Prof.dr. M. Ubbink
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Predicting the future: Predictive control for astronomical adaptive optics
The field of exoplanet research is rapidly advancing through the development of new technology, observing techniques, and post-processing methods.
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Tuning in to star-planet interactions at radio wavelengths
Low-mass main-sequence stars like our Sun are continuous sources of outflowing hot magnetised plasma. In the case of the Sun, this is known as the solar wind, whereas for other stars they are called stellar winds.
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Protostellar jets and planet-forming disks: Witnessing the formation of Solar System analogues with interferometry
The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.
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Painting with starlight : optical techniques for the high-contrast imaging of exoplanets
This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.
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A search for transient reductions in the speed of sound of the inflaton in cosmological data, and other topics
Promotor: Prof.dr. A. Achucarro
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Aggravating matters: accounting for baryons in cosmological analyses
Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.
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The Ecology and Evolution of Microbial Warfare in Streptomyces
The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.
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Exploring the metabolism and toxicity of amino sugars and 2-deoxyglucose in Streptomyces
Streptomyces are prolific producers of enzymes and secondary metabolites, including more than 50% of all clinical antibiotics. This makes them highly attractive for medical, biotechnological, and industrial purposes.
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Bearing with noise: The effects of highway noise on behaviour and development in zebra finches
Anthropogenic noise negatively affects wildlife in a wide range of taxonomic groups.
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Human Frontier Science Program prijs voor Katharina Riebel
Een internationaal onderzoeksteam metgedragsbioloog Katharina Riebel als hoofdonderzoeker en twee internationale medewerkers ontving een Human Frontier Science Program (HFSP) beurs voor het hun onderzoeksvoorstel ‘Seeing voices’: the role of multimodal cues in vocal learning.
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The early stress response of jasmonic acid in cell suspension cultures of Catharanthus roseus
In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…
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Role of non-homologous end-joining in T-DNA integration in Arabidopsis thaliana
Promotor: P. J. J. Hooykaas Co-promotor: B. S de Pater
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Time is of the essence: investigating kinetic interactions between drug, endogenous neuropeptides and receptor
Promotor: A.P. IJzerman Co-promotor: L.H. Heitman
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The heart of oxygenic photosynthesis illuminated
Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia
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Towards High Performance and Efficient Brain Computer Interface Character Speller: Convolutional Neural Network based Methods
A P300-based Brain Computer Interface character speller, also known as P300 speller, has been an important communication pathway, under extensive research, for people who lose motor ability, such as patients with Amyotrophic Lateral Sclerosis or spinal-cord injury because a P300 speller allows human-beings…
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Conference of the International Association for Forensic Phonetics and Acoustics (IAFPA)
Congres/symposium
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Kiki SpaninksFaculteit der Wiskunde en Natuurwetenschappen
k.spaninks@biology.leidenuniv.nl | 071 5274835
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Temperature effects on genetic and physiological regulation of adaptive plasticity
Promotor: P.M. Brakefield
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Mutation-Driven Modulation of GPCR Pharmacology: Insights from Adenosine and Serotonin Receptors
This thesis seeks to investigate how cancer-associated mutations affect the pharmacological properties of selected GPCRs—primarily A2AAR and 5-HT2CR—through a combination of ligand binding assays, signaling readouts, kinetic profiling, and cellular functional assays.
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Fien Demuynck
Voor meer informatie, zie de Engelse pagina.
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Tropisch suikerdiefje verliest zangkwaliteit in stad
Volgens mij moeten we hierheen. Hierheen! HIER! HEEN!! Je verstaanbaar maken in een stad is soms lastig. Dat geldt niet alleen voor mensen: ook vogels blijken last te hebben van het omgevingsgeluid. Eerder bewees onderzoeker Hans Slabbekoorn al dat Leidse mezen anders communiceren in de stad. Nu blijkt…
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Wiskundemeisjes op tv
De wiskundemeisjes Jeanine Daems en Ionica Smeets komen op televisie. Vanaf donderdag 15 november, op Nederland 2, van 9.30 - 9.45 uur, zijn ze zes afleveringen lang te zien in de school-tv serie 'Wiskunde voor de tweede fase'.
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Ionica Smeets in de studentenkrant van Metro nieuws over haar studietijd
Je kent haar waarschijnlijk van haar blog 'Wiskundemeisjes', Zomergasten (2014) of van haar columns in de Volkskrant en Kek Mama.
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Ionica Smeets in Donald Duck als Pionica
Deze week staat Weekblad Donald Duck in het teken van wiskunde en dat viert het blad met een speciale gast. Hoogleraar Wetenschapscommunicatie Ionica Smeets is namelijk te zien als Pionica Smeets, voorzitster van de Duckstadse Algebra-ver1niging.
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Complexity aanvraag Arjen Doelman c.s. gehonoreerd
Binnen de eerste subsidieronde van het NWO-onderzoeksprogramma Complexity is het project 'Critical transitions and early-warning signals in spatial ecosystems', gezamenlijk ingediend door Arjen Doelman, Jens Rademacher (CWI) en Max Rietkerk en Martin Wassen (beiden geowetenschappen, UU), gehonoreerd…
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Hans Slabbekoorn over dove vogels rondom luchthavens
Vogels rondom luchthavens zijn agressiever en zingen alsof ze gehoorverlies hebben. Gedragsbioloog Hans Slabbekoorn kwam samen met onderzoekers van Manchester Metropolitan University tot verrassende resultaten over de impact van door mensen veroorzaakt lawaai op vogels rondom vliegvelden.
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Hans Slabbekoorn bij NPO Radio 1 over de effecten van mensenlawaai
Gedragsbioloog Hans Slabbekoorn van het Instituut Biologie Leiden was te gast in het wetenschapsprogramma Focus Wetenschap. Hij sprak er over de impact van menselijke herrie.
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Kan het nieuws volgen dodelijk zijn?
Hoogleraar Wetenschapscommunicatie Ionica Smeets trapt het nieuwe seizoen van de Universiteit van Nederland af.
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Mersennepriemen bij DWDD en P&W
Op 6 februari waren Hendrik Lenstra en Bas Jansen te gast bij De Wereld Draait Door om uitleg te geven over de ontdekking van de nieuwe Mersennepriem. Ionica Smeets schoof aan bij Pauw en Witteman.
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‘Wiskundemeisjes’ beginnen column in de Volkskrant
Met ingang van het nieuwe jaar hebben de wiskundemeisjes een column in de bijlage Kennis van de Volkskrant.
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Publicatie Dr. Iris van Ooijen
Dr. Iris van Ooijen publiceert in februari een artikel in Appetite, getiteld “Signalling product healthiness through symbolic package cues: Effects of package shape and goal congruence on consumer behavior”, in samenwerking met collega’s van de Universiteit van Amsterdam en de Vrije Universiteit Ams…