0000000000344004

AUTHOR

Kari Kataja

showing 3 related works from this author

Guiding and reflecting light by boundary material

2003

We study effects of finite height and surrounding material on photonic crystal slabs of one- and two-dimensional photonic crystals with a pseudo-spectral method and finite difference time domain simulation methods. The band gap is shown to be strongly modified by the boundary material. As an application we suggest reflection and guiding of light by patterning the material on top/below the slab.

Materials scienceSilicon photonicssilicon photonicsBand gapbusiness.industryFinite-difference time-domain methodFOS: Physical sciencesPhysics::OpticsBoundary (topology)optical waveguidesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOpticsphotonic band gap materialsReflection (physics)Slabphotonic crystal slabsElectrical and Electronic EngineeringPhysical and Theoretical ChemistrybusinessRefractive indexPhysics - OpticsOptics (physics.optics)Photonic crystalOptics Communications
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Expression and glycosylation studies of human FGF receptor 4

2001

Fibroblast growth factor receptor subtype 4 (FGFR4) has been shown to have special activation properties and just one splicing form, unlike the other FGFRs. FGFR4 overexpression is correlated with breast cancer and therefore FGFR4 is a target for drug design. Our aim is to overexpress high amounts of homogeneous FGFR4 extracellular domain (FGFR4ed) for structural studies. We show that baculovirus-insect cell-expressed FGFR4ed is glycosylated on three (N88, N234, and N266) of the six possible N-glycosylation sites but is not O-glycosylated. The deglycosylated triple mutant was expressed and had binding properties similar to those of glycosylated FGFR4ed, but was still heterogeneous. Large am…

Protein FoldingGlycosylationGlycosylationBlotting WesternImmunoblottingMolecular Sequence DataProtein RenaturationBiologyFibroblast growth factorMass SpectrometryInclusion bodiesCell Line03 medical and health scienceschemistry.chemical_compoundSDG 3 - Good Health and Well-beingEscherichia coliAnimalsHumansReceptor Fibroblast Growth Factor Type 4TrypsinAmino Acid SequenceDisulfidesReceptorChromatography High Pressure Liquid030304 developmental biologyInclusion Bodies0303 health sciencesHeparin030302 biochemistry & molecular biologyFibroblast growth factor receptor 4Fibroblast growth factor receptor 3Receptors Fibroblast Growth FactorMolecular biologyRecombinant Proteins3. Good healthchemistryFibroblast growth factor receptorMutationRNA splicing/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_beingBaculoviridaeBiotechnology
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Sun-induced fluorescence - a new probe of photosynthesis: First maps from the imaging spectrometer HyPlant.

2015

Variations in photosynthesis still cause substantial uncertainties in predicting photosynthetic CO2 uptake rates and monitoring plant stress. Changes in actual photosynthesis that are not related to greenness of vegetation are difficult to measure by reflectance based optical remote sensing techniques. Several activities are underway to evaluate the sun-induced fluorescence signal on the ground and on a coarse spatial scale using space-borne imaging spectrometers. Intermediate-scale observations using airborne-based imaging spectroscopy, which are critical to bridge the existing gap between small-scale field studies and global observations, are still insufficient. Here we present the first …

Chlorophyllinduced fluorescencesunImaging spectrometer2306 Global and Planetary ChangeFluorescence2300 General Environmental SciencePhotosynthesiEnvironmental ChemistryAirborne measurement910 Geography & travelSpectral resolutionPhotosynthesisAbsorption (electromagnetic radiation)Spectroscopyairborne measurementsChlorophyll fluorescenceGeneral Environmental ScienceRemote sensingGlobal and Planetary ChangeSpectrometerEcology2300Remote sensingImaging spectroscopyVegetation monitoringFLEXImaging spectroscopy10122 Institute of GeographyGEO/10 - GEOFISICA DELLA TERRA SOLIDASpectrometry FluorescenceSun-induced fluorescence2304 Environmental ChemistryHyPlantRemote Sensing TechnologySunlightEnvironmental scienceSpatial variabilityChlorophyll fluorescence2303 EcologyGlobal change biology
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