Search results for "SMM"
showing 10 items of 12 documents
Nanoscale Mapping of the Physical Surface Properties of Human Buccal Cells and Changes Induced by Saliva
2019
International audience; The mucosal pellicle, also called salivary pellicle, is a thin biological layer made of salivary and epithelial constituents, lining oral mucosae. It contributes to their protection against microbiological, chemical, or mechanical insults. Pellicle formation depends on the cells’ surface properties, and in turn the pellicle deeply modifies such properties. It has been reported that the expression of the transmembrane mucin MUC1 in oral epithelial cells improves the formation of the mucosal pellicle. Here, we describe an approach combining classical and functionalized tip atomic force microscopy and scanning microwave microscopy to characterize how MUC1 induces change…
Climate Data Records of Vegetation Variables from Geostationary SEVIRI/MSG Data: Products, Algorithms and Applications
2019
The scientific community requires long-term data records with well-characterized uncertainty and suitable for modeling terrestrial ecosystems and energy cycles at regional and global scales. This paper presents the methodology currently developed in EUMETSAT within its Satellite Application Facility for Land Surface Analysis (LSA SAF) to generate biophysical variables from the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) on board MSG 1-4 (Meteosat 8-11) geostationary satellites. Using this methodology, the LSA SAF generates and disseminates at a time a suite of vegetation products, such as the leaf area index (LAI), the fraction of the photosynthetically active radiation absorbed …
Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices.
2021
The search for two- and three-dimensional materials with slow relaxation of the magnetization (single-ion magnets, SIM and single-molecule magnets, SMM) has become a very active area in recent years. Here we show how it is possible to prepare two-dimensional SIMs by combining Dy(III) with two different anilato-type ligands (dianions of the 3,6-disubstituted-2,5-dihydroxy-1,4-benzoquinone: C6O4X22−, with X = H and Cl) in dimethyl sulfoxide (dmso). The two compounds prepared, formulated as: [Dy2(C6O4H2)3(dmso)2(H2O)2]·2dmso·18H2O (1) and [Dy2(C6O4Cl2)3(dmso)4]·2dmso·2H2O (2) show distorted hexagonal honeycomb layers with the solvent molecules (dmso and H2O) located in the interlayer space and…
Small world theory and the World Wide Web: linking small world properties and website centrality
2016
This qualitative paper aims to point out the incidence of small world characteristics in the World Wide Web. To this end, some theoretical implications of small world theory (SWT) are verified using information from focus groups and in-depth interviews administered to experts and users of the World Wide Web. The purpose of this study is to investigate whether it is possible to apply small world properties to online social networks while pointing out the key variables of website centrality in that context. Building on this, the paper traces possible contributions for better management of the World Wide Web in terms of the professional use of social media to facilitate information or product …
Applications and development of acoustic and microwave atomic force microscopy for high resolution tomography analysis
2016
The atomic force microscope (AFM) is a powerful tool for the characterization of organic and inorganic materials of interest in physics, biology and metallurgy. However, conventional scanning probe microscopy techniques are limited to the probing surface properties, while the subsurface analysis remains difficult beyond nanoindentation methods. Thus, the present thesis is focused on two novel complementary scanning probe techniques for high-resolution volumetric investigation that were develop to tackle this persisting challenge in nanometrology.The first technique considered, called Mode Synthesizing Atomic Force Microscopy (MSAFM), has been exploited in collaboration with Dr. Laurene Teta…
SMM kā ietekmes instruments uz lietotāju sociālo apziņu
2019
Bakalaura darba tēma ir „SMM kā ietekmes instruments uz lietotāju sociālo apziņu”. Bakalaura darba mērķis ir izpētīt, ar kādu valodas stratēģiju un metožu palīdzību iespējams ietekmēt sociālo tīklu lietotāju sociālo (masu) apziņu. Lai sasniegtu darba mērķi, ir veikta termina “sociālā apziņa” izpēte, kā arī tiek apskatītas dažādas SMM stratēģijas un tā darbības princips. Darbā tika izmantotas sekojošas pētījuma metodes: 1. teorētiskā: literatūras un interneta avotu analīze; 2. analītiskā: reklāmas publikāciju vietnē Instagram analīze. Lasītājs īsi tiek iepazīstināts ar sociālās apziņas jēdzienu un tā būtību. Bakalaura darbā ir tuvāk raksturots SMM termins, kā arī izpētīts koncepcijas WEB 2.0…
Mucin MUC1: a key protein in oral physiology and the molecular mechanisms of sensory perception of astringency
2022
Akciju tirgus cenu prognozēšana, izmantojot slēptos Markova modeļus
2017
Bakalaura darba pētāmā problēma ir slēpto Markova modeļu pielietojums akciju tirgus cenu prognozēšanai. Darbs ir veltīts slēpto Markova modeļu un to galveno pamatproblēmu izpētei un risināšanai, kā arī akciju tirgus cenu prognozēšanai trīs uzņēmumu akcijām, izmantojot gan slēptos Markova modeļus ar diviem slēptajiem stāvokļiem, gan ar trīs slēptajiem stāvokļiem. Katra uzņēmuma prognožu precizitātes ir salīdzinātas, izmantojot vidējo absolūto procentuālo kļūdu un izveidojot grafisku attēlojumu, salīdzinot reālās akciju cenas ar iegūtajām prognozētajām akciju cenām. Datu analizēšanai un aprēķiniem izmantota programma Microsoft Excel, kā arī statistisko aprēķinu programma R.
Multiproperty complexes of 4d and 4f metal ions based on biomolecules: from fundamental research to potential applications
2023
El trabajo desarrollado en esta Tesis se enmarca en el campo de la Química de Coordinación y el Magnetismo Molecular, vectores base para el desarrollo de múltiples aplicaciones en Nanomedicina y Nanotecnología. El estudio de los compuestos de coordinación tiene una larga historia que se remonta a principios del siglo XIX, con notables contribuciones de químicos como Berzelius y Jørgensen. Esta rama de la química se centra en la comprensión de las propiedades de unión de los ligandos (moléculas o aniones donadores de electrones) a los iones metálicos. Las teorías de Alfred Werner sobre la coordinación de iones metálicos a principios del siglo XX marcaron un hito importante en este campo. El …
Chemical design of coordination polymers and functional materials: from pore control in MOFs through spin dynamics in nanomagnets to rotaxanes in mol…
2022
El trabajo de esta tesis se enmarca en el diseño químico de polímeros de coordinación y de materiales funcionales para poder ser utilizados en el campo de los materiales moleculares. El capítulo 1 ofrece una visión de los avances más significativos en la química de coordinación, así como una introducción general de los materiales moleculares más relevantes en la actualidad. El objetivo es proporcionar al lector el conocimiento necesario para establecer las bases sobre los campos a tratar. El resto de capítulos está organizado de acuerdo con un aumento de la dimensionalidad, empezando con moléculas discretas y terminando con polímeros de coordinación. El capítulo dos describe dos estructuras…