Search Results - "Frederik, P.M"
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Direct observation of dipolar chains in iron ferrofluids by cryogenic electron microscopy
Published in Nature materials (01-02-2003)“…A key issue in research on ferrofluids (dispersions of magnetic colloids) is the effect of dipolar interactions on their structure and phase behaviour, which…”
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Accumulation of ultrasmall superparamagnetic particles of iron oxide in human atherosclerotic plaques can be detected by in vivo magnetic resonance imaging
Published in Circulation (New York, N.Y.) (20-05-2003)“…One of the features of high-risk atherosclerotic plaques is a preponderance of macrophages. Experimental studies with hyperlipidemic rabbits have shown that…”
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Relaxivity of liposomal paramagnetic MRI contrast agents
Published in Magma (New York, N.Y.) (01-09-2005)“…Paramagnetic liposomes, spherical particles formed by a lipid bilayer, are able to accommodate a high payload of Gd-containing lipid and therefore can serve as…”
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Clustering of lipid-bound annexin V may explain its anticoagulant effect
Published in The Journal of biological chemistry (05-09-1992)“…In 1985 we isolated a new vascular anticoagulant protein VAC alpha, now called annexin V, with a high binding affinity (Kd less than 10(-10) M) for…”
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The Formation of Well-Defined Hollow Silica Spheres with Multilamellar Shell Structure
Published in Advanced materials (Weinheim) (04-07-2003)“…Hollow mesoporous silica spheres that are highly defined in shape and size (see Figure) are prepared using a poly(ethylene oxide)–poly(propylene…”
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Improved DNA: liposome complexes for increased systemic delivery and gene expression
Published in Nature biotechnology (01-07-1997)“…To increase cationic liposome-mediated intravenous DNA delivery extruded DOTAP:cholesterol liposomes were used to form complexes with DNA, resulting in…”
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Spatial and temporal resolution in cryo-electron microscopy—A scope for nano-chemistry
Published in Current opinion in colloid & interface science (01-12-2005)“…Cryo-electron microscopy has evolved in an established approach to study the structure of bio-colloids. Recent developments in instrumentation and automation,…”
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The Structure of DNA−Liposome Complexes
Published in Journal of the American Chemical Society (29-01-1997)“…Extremely rapid developments in molecular biology are making gene therapy-a new medical treatment with a potential to cure diseases on the molecular level-a…”
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Environment-sensitive stabilisation of silver nanoparticles in aqueous solutions
Published in Journal of colloid and interface science (15-11-2009)“…Polymer-assisted synthesis and environment-sensitive stabilisation of silver nanoparticles can be achieved through the formation of complex coacervate core…”
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Spontaneous vesiculation
Published in Advances in colloid and interface science (29-01-2001)“…The thermodynamics of vesicle formation was analyzed by using the elastic bending energy approach. Several different possibilities of spontaneous vesiculation,…”
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Transmembrane gradient driven phase transitions within vesicles: lessons for drug delivery
Published in Biochimica et biophysica acta (01-11-1995)“…Phase transitions in closed vesicles, i.e., microenvironments defined by the size of the vesicle, its contents, and permeability of its membrane are becoming…”
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Gelation of liposome interior A novel method for drug encapsulation
Published in FEBS letters (09-11-1992)“…Liposomes can be loaded with weak acids and bases, which exist in solutions in equilibrium with membrane permeable uncharged form, using various gradients…”
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Double‐Faced Micelles from Water‐Soluble Polymers
Published in Angewandte Chemie (International ed.) (13-10-2006)“…Asymmetric disk‐shaped Janus micelles form spontaneously and reversibly when simple water‐soluble diblock copolymers in aqueous solutions are mixed. The…”
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Morphological observations on liposomes bearing covalently bound protein: Studies with freeze-fracture and cryo electron microscopy and small angle X-ray scattering techniques
Published in Biochimica et biophysica acta. Biomembranes (06-03-1998)“…The appearance of protein bound to the surface of intact and microfluidized liposomes and its possible influence on their morphology was examined by…”
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Interaction of Styrene with DODAB Bilayer Vesicles. Influence on Vesicle Morphology and Bilayer Properties
Published in Langmuir (08-02-2000)“…The solubilization of styrene in large unilamellar DODAB vesicles is investigated at a styrene to DODAB molar ratio of 2:1. The combination of various vesicle…”
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Reevaluation of the effect of lysoyzme on Escherichia coli employing ultrarapid freezing followed by cryoelectronmicroscopy or freeze substitution
Published in Microscopy research and technique (01-11-1997)“…Lysozyme is able to lyse Gram‐positive bacteria acting as muramidase on the peptidoglycan polymer. Gram‐negative bacteria in vitro are not lysed by lysozyme…”
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Giant Amphiphiles by Cofactor Reconstitution
Published in Angewandte Chemie (15-11-2002)“…Meerrettich‐Peroxidase, die durch Cofaktor‐Zugabe rekonstituiert und dabei mit einer apolaren Polymerkette verknüpft wurde (siehe Bild), bildet gigantische…”
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PIXE microanalysis of trace elements of the normoxic, ischemic and reperfused rat heart
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-09-1995)“…Via PIXE with a 3 × 3 μm 2 proton microbeam spatial distributions of Na, Mg, P, S, K, Ca and Fe were measured in 50 × 50 μm 2 areas of rat heart, sliced into…”
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Ischemia and reperfusion induced multilamellar vesicles in isolated rabbit hearts: time correlation between morphometric data and metabolic alterations
Published in Journal of molecular and cellular cardiology (01-06-1990)“…In normoxic hearts a limited number of multilamellar vesicles was found in both endothelial cells and myocytes. The total number of multilamellar vesicles…”
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