1,476 zoekresultaten voor “chemisch weapons en ethics” in de Publieke website
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Natural and non-natural factors influencing Alzheimer´s Aβ
Promotor: Prof.dr. J.P. Abrahams
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Accurate modeling of the dynamics of dissociative chemisorption on metal surfaces
Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.
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Thiosugars: reactivity, methodology and applications
Carbohydrates, alongside proteins and nucleic acids, constitute a crucial and versatile family of biomolecules present in all life forms. They manifest as monosaccharides, oligosaccharides, and polysaccharides, covalently bonded to proteins and fats. Carbohydrates are integral to plant and arthropod…
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Discovery of FLT3 inhibitors for the treatment of acute myeloid leukemia
The disease acute myeloid leukemia (AML) is characterized by fast progression and low survival rates.
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Classical and paramagnetic NMR spectroscopy applied to different protein systems
Promotor: Prof.dr. M. Ubbink
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Investigations on the role of impaired lysosomes of macrophages in disease
The research described in this thesis combines the latest insights in lysosomal function with lysosome centred cell signalling.
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Vervolgopleidingen
Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding. De Universiteit Leiden stimuleert studenten om na hun bacheloropleiding door te gaan met de masteropleiding.
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Hydrogen dissociation on metal surfaces
Promotor: G. J. Kroes
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The structure of the cytochrome P450cam-putidaredoxin complex determined by paramagnetic NMR spectroscopy and crystallography
Promotor: Prof.dr. M. Ubbink
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Copper complexes for bioinspired electrocatalysis relevant to the reduction of oxygen
This thesis advance our understanding and the application of molecular catalysts relevant to the reduction of oxygen as well as reduction of nitrite.
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Bacterial glycomimetics: synthesis and applications
This work has described synthetic strategies towards well-defined structures resembling capsular polysaccharide (CPS) fragments, CPS mimics, teichoic acid (TA) fragments as well as a third-generation ring-closing tandem metathesis (RCM) linker to better exploit the potential of automated synthesis.
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Transglycosylation of N-acylethanolamines
N-acylethanolamines (NAEs), including N-arachidonoylethanolamine (anandamide, AEA), N-palmitoylethanolamine (PEA) and N-oleoylethanolamine (OEA), are signaling lipids that play an important role in different physiological process.
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Squaramide-based interpenetrated networks for load-bearing applications
This thesis explores squaramide-based supramolecular polymers and hydrogels, enhancing their mechanical strength for 3D cell culture.
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Microcoil MRI of Plants and Algae at Ultra-High Field: An exploration of metabolic imaging
This thesis investigates the relations between metabolism and anatomy through the use of Magnetic Resonance Imaging (MRI).
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Enzyme-substrate interactions in the processive enzyme xylanase
The primary goal of this research is to deepen our understanding of substrate-enzyme interactions in Glycoside hydrolases. For this purpose, Bacillus circulans xylanase (BcX) has been selected as a well-established model to examine the Michaelis complex and glycosyl-enzyme adduct.
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Staff Alliance for Equity
De Staff Alliance for Equity (SAFE) is een bottom-upplatform dat openstaat voor medewerkers op alle niveaus, ongeacht hun contractuele status. De aanwezigheid en activiteiten van SAFE versterken onze toewijding aan de Gedragscode van de Faculteit Governance and Global Affairs, die ‘alle studenten en…
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Business & Human Rights
Duurzaamheid is een van de centrale aandachtspunten van de Universiteit Leiden en speelt een steeds grotere rol binnen het onderwijs en onderzoek van de Faculteit der Rechtsgeleerdheid. Binnen deze context levert de afdeling Sociaal Recht een belangrijke bijdrage aan het debat en onderzoek rondom Business…
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Ethiek: hoe edelmoedig moet een zelfrijdende auto zijn?
Intelligente apparaten zullen ook ethische beslissingen gaan nemen. Mag een zelfrijdende auto voetgangers overrijden om de inzittenden te redden van een frontale botsing? Mag een onderhandelings-app stress in de stem van de tegenpartij detecteren? En wie bepaalt of dit mag, de gebruiker, de maker of…
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Eregalerij 2020
Ook in 2020 hebben veel van onze medewerkers en studenten mooie prijzen gewonnen en belangrijke onderzoekssubsidies binnengehaald.
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Carsten de Dreu is benoemd als Distinguished Research Fellow in Oxford
De Leidse sociaal psycholoog Carsten de Dreu is door zijn benoeming als Distinguished Research Fellow verbonden aan de University of Oxford om mee te denken en te werken aan een groot onderzoek naar besmettelijke ziekte.
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ICSSR-NWO Social Science Collaboration subsidie voor Erik de Maaker
Antropoloog Erik de Maaker ontvangt een beurs voor onderzoekssamenwerking tussen India en Nederland voor het project 'Markets, Ethics and Agency.' De subsidie wordt ingezet voor onderzoek naar de toenemende integratie van de hooglanden van Zuid-Azië.
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New book publiction: Pas d’armes and Late Medieval Chivalry: A Casebook
This new Casebook features the work of an international, interdisciplinary research group entitled ‘The Joust as Performance: Pas d’armes and Late Medieval Chivalry’.
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Ludo Juurlink
Digitale voortgangstoetsing als didactische methodiek.
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Gerard van Westen: 'Ons model voorspelt wat kandidaat-medicijnen doen in je lijf'
Hij praat snel en enthousiast. Logisch, want Gerard van Westen is als de machinist op een heel snelle trein. Het eindstation: een virtuele mens, bestaand uit algoritmen die voorspellen wat een toegediende stof doet in ons lichaam. De trein is al een heel eind op weg. De farmaceutische industrie is ook…
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Elektrolyse en de productie van brandstoffen
Een techniek om CO2 om te zetten in brandstoffen en andere nuttige producten, is elektrolyse. Om dit efficiënt en op grote schaal te kunnen doen, moeten we wel precies begrijpen hoe elektrolyse werkt. Hoogleraar Marc Koper is expert op dit gebied.
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Scheikunde
Betekenisvol scheikundeonderwijs
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Nanodeeltjes – redox eiwit biohybriden
Kunstmatige fotosynthese heeft als doel om via chemische processen zonne-energie om te zettn in brandstof. Semi-kunstmatige fotosynthese is een hybride aanpak waarbij chemische maar ook biotechnologische processen worden gebruikt. Wij hebben als doel om een hybride systeem te ontwikkelen met behulp…
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Studieverenigingen
De Faculteit der Wiskunde en Natuurwetenschappen heeft verschillende studieverenigingen, die zowel studiegerelateerde als sociale activiteiten organiseren voor studenten.
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Connecting dots between natural and artificial Photosynthesis
Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.
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Computational and experimental studies of reactive intermediates in glycosylation reactions
Carbohydrates, or sugars, are the most diverse and most abundant biomolecules known. However, the isolation of carbohydrate samples in sufficient amounts and purity is often impractical or even impossible, so the chemical synthesis of glycosides becomes relevant. The glycosylation reaction, in which…
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1,2-cis-glycosylations: method development and synthesis of complex oligosaccharides
Promotor: G.A. van der Marel, Co-promotor: D.C. Codée
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Chemical biology of glucosylceramide metabolism fundamental studies and applications for Gaucher disease
This thesis describes biochemical investigations of glucocerebrosidase (GBA), the lysosomal β- glucosidase that is deficient in Gaucher disease (GD).
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A computational study of structural and excitonic properties of chlorosomes
The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…
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The role of water in hydrogen electrocatalysis
Promotor: M.T.M. Koper, Co-promotor: L. Juurlink
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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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Exploring structure dependencies of gas-surface interactions with curved single crystals
Curved single crystals provide variable, but well-defined surface structures.
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Cathodic corrosion
Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.
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Chemical biology studies on retaining exo-β-glucosidases
The research described in this thesis centered on retaining exo-β-glucosidases implicated in health and disease, in particular the human inherited lysosomal storage disorder, Gaucher disease (GD).
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Click-to-release for immune cell activation
This work describes the use of click-to-release chemistry to get spatiotemporal control over immunocytokine activity. Until now, immunocytokines (cytokines coupled to a tumor-targeting-moiety) remained active throughout the body, being able to bind their respective receptors, causing mild to severe…
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Discovery of novel inhibitors to investigate diacylglycerol lipases and α/β hydrolase domain 16A
Promotor: H.S. Overkleeft, Co-promotor: M. van der Stelt
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Iron complexes as electrocatalysts for the water oxidation reaction
In this dissertation, the synthesis and characterization of a series of iron complexes based on different ligand platforms are described.
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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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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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Discovery of selective diacylglycerol lipase β inhibitors
Diacylglycerol lipases (DAGLα and DAGLβ) are responsible for the biosynthesis of the endocannabinoid 2-arachidonoylglycerol (2-AG) in the brain and peripheral tissues. Selective DAGLβ inhibitors have been proposed as a potential treatment for inflammatory diseases with reduced potential for central…
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Redox Interconversion between Metal Thiolate and Disulfide Compounds
In the last decade, the redox interconversion between metal thiolate and disulfide compounds has been extensively investigated for copper, but not for other transition metal ions.
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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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Mesoporous silica nanoparticle-based protein delivery systems for biomedical applications
Promotor: A. Kros
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Discovery of antibiotics and their targets in multidrug-resistant bacteria
Global healthcare is on the verge of an antibiotic availability crisis as bacteria have evolved resistance to nearly all known antibacterials. Identifying new antibiotics that operate via novel modes-of-action is therefore of high priority.
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Bioorthogonal Labeling Tools to Study Pathogenic Intracellular Bacteria
In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.
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The relation between dynamics and activity of phospholipase A/acyltransferase homologs
Phospholipase A/acyltransferase 3 (PLAAT3) and PLAAT4 are enzymes involved in the synthesis of bioactive lipids. Despite sequential and structural similarities, the two enzymes differ in activity and specificity.