2,479 search results for “social chemistry” in the Public website
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Deciphering the complex paramagnetic NMR spectra of small laccase
Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.
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Zipping into Fusion
Promotor: J.G.E.M.Fraaije, Co-promotor: A. Kros
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Synthesis of phosphodiester-containing bacterial cell wall components: teichoic acids, capsular polysaccharides and phosphatidyl glycerol analogues
Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée
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Reactivity on interstellar ice analogues
The
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Master's application and admission
Find out how to apply for Chemistry at Leiden University by following our step-by-step guide.
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Is dismissal permitted following social media post?
In an appeal case, an employee of a care organisation in Nijmegen who was shown the door because of her criticism about the coronavirus voiced on LinkedIn, has had her dismissal reviewed. The court in Arnhem ruled that the employee had crossed a line and that her employer was entitled to dismiss her…
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Bio-organic Synthesis
The research in the Biosyn group is focused on the design, synthesis and function of the four major types of biomolecules: nucleic acids, carbohydrates, peptides and lipids and hybrid structures thereof. These biomolecules and their derivatives are used in drug discovery and chemical biology, to develop…
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Buddhism and Social Justice
From 23-25 April 2014, a conference will be held on the topic of Buddhism and Social Justice. This conference confronts the common perception of Buddhism as intrinsically a tradition of peace and justice, and explores the various ways in which historically Buddhist societies of Asia have shaped, transmitted,…
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The Power of Words: State Reactions to Protest Announcements
Organizations often announce their protest activities prior to their implementation to mobilize awareness, recruit supporters, and receive media attention. We are interested in the effectiveness of protest announcements—that is, under what conditions governments make concessions to avoid having an announced…
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Genetic predisposition to social anxiety disorder measurable in the brain
It was already known that social anxiety disorder often affects more than one person in the same family. But research by PhD student Janna Marie Bas-Hoogendam has now shown that there are genetic brain characteristics that are associated with social anxiety. The PhD ceremony will take place on 14 Ja…
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Sebastian PomplunFaculty of Science
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Versobering wachtgeld politici financieel onnodig, maar lastig uit te leggen
Cijfers van Binnenlandse Zaken laten zien dat de wachtgeldregeling voor politici, in tien jaar tijd – door drie gevallen kabinetten - vijf keer groter is geworden. Barend Barentsen, deskundige in sociaal zekerheidsrecht, zegt in het FD dat dit ‘schuurt met de regeling om steeds meer versoberingen in…
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Carolien RieffeFaculty of Social and Behavioural Sciences
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Anna van DuijvenvoordeFaculty of Social and Behavioural Sciences
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Selectivity and competition between the anodic evolution of oxygen and chlorine
Sustainable energy from wind and solar is most readily available near the sea.
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Deciphering the atomic structure of the electrified metal oxide-electrolyte interface
Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.
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Supramolecular polymer materials for biomedical applications and diagnostics
Self-assembly is an abundant process in nature and is vital to many processes in living organisms.
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Discovery of BUB1 kinase inhibitors for the treatment of cancer
The spindle-assembly checkpoint (SAC) is a safety mechanism which secures accurate chromosome segregation during mitosis.
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Steps in gas-surface reactions
Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.
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Towards near-infrared light-activated combination chemotherapy
The goal of the research presented in this thesis was to explore the chemical space of ruthenium(II) photocages, investigate their ability to host potent chemotherapy drugs, and to red shift the activation wavelength of the most promising PACT candidates to conduct biological studies.
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Development of highly accurate density functionals for H2 dissociation on transition metals
Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).
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The role of water in hydrogen electrocatalysis
Promotor: M.T.M. Koper, Co-promotor: L. Juurlink
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Interaction of oxygen and carbon monoxide with Pt(111) at intermediate pressure and temperature: revisiting the fruit fly of surface science
Promotor: M.T.M. Koper, Co-promotors: A.I. Yanson, L.B.F. Juurlink
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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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Molecular sensors for calcium ion detection via triplet-triplet annihilation upconversion
Cardiovascular diseases (CVDs) are the leading global cause of mortality. Endothelial dysfunction, an early reversible stage of CVD development, is marked by decreased nitric oxide production linked to Ca2+ influx in endothelial cells.
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Platinum surface instabilities and their impact in electrochemistry
Hydrogen fuel cells are expected to be pivotal in the energetic transition towards renewable energy sources such as solar and wind power. However, their industrial scalability is severely hindered by the high cost and degradation rate of platinum catalysts, one of their key components. Addressing this…
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Surface-structure dependence of water-related adsorbates on platinum
Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink
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Artificial metallo-proteins for photocatalytic water splitting: stability and activity in artificial photosynthesis
Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.
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Mechanistic studies of the water oxidation reaction with molecular iron catalysts
In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.
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Insights into the mechanism of electrocatalytic CO2 reduction and concomitant catalyst degradation pathways
This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…
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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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Fundamental research on the voltammetry of polycrystalline gold
Voltammetry plays a crucial role in modern scientific research by offering valuable insights into the electrochemical properties of materials, with wide-ranging applications in fields such as materials science, energy storage, corrosion studies, and sensor development.
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Magnetic Resonance Microimaging of Alzheimer's Disease
Alzheimer's disease (AD) is the most frequent neurodegenerative disorder and the primary cause of dementia. The neuropathological features of AD include the occurrence of senile plaques, neurofibrillary tangles, decreased synaptic density, and loss of neurons. An obstacle in the study and treatment…
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A large-scale crop protection bioassay data set
ChEMBL is a large-scale drug discovery database containing bioactivity information primarily extracted from scientific literature.
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Perovskite-based Photoelectrochemical Investigations for Artificial Photosynthesis
Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.
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Squaramide-based supramolecular polymers: from self-assembly to in vivo application
The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.
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Water related adsorbates on stepped platinum surfaces
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Ruthenium-peptide conjugates for targeted phototherapy
As leading cause of death worldwide, cancer is responsible for nearly 10 million deaths in 2020 according to World Health Organization (WHO). Cisplatin and its derivatives are commonly used chemotherapy agents for current cancer treatment in the clinics.
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Stereoelectronic and conformational effects in oxocarbenium, iminium and iminosugar ammonium ions
Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée
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Explorations of Water Oxidation Catalysis in Explicit Solvent
In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.
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Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts
With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.
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Adsorption and catalysis on Pt and Pd monolayer-modified Pt single crystal electrodes
The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.
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The electrode-electrolyte interface in CO2 reduction and H2 evolution: a multiscale approach
Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.
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In silico characterization of a GPCR focused library
Supervisor: Gerard van Westen
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Gold nanoparticle-peptide conjugates for biomedical applications
Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.
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Chemical Synthesis of Fragments of Streptococcal Cell Wall Polysaccharides
This thesis describes the design and synthesis of fragments of various cell wall carbohydrates of the Streptococcus species, including the branched Group B-specific antigen (GBC) of Group B Streptococcus, glycerol phosphate (GroP) modified group A carbohydrate (GAC), and the O-acetylated type 1 capsular…
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The optimization and scale-up of the electrochemical reduction of CO₂ to formate
Carbon dioxide capture and utilization technologies are necessary to create a truly circular economy. The electrochemical reduction of carbon dioxide to formate is an appealing carbon utilization method as it can be performed at room temperature and pressure, it only requires two electrons, and it has…