Search results for "solution"
showing 10 items of 5638 documents
Monitoring water and carbon fluxes at fine spatial scales using HyspIRI-like measurements
2012
Remotely sensed observations in the visible to the shortwave infrared (VSWIR) and thermal infrared (TIR) regions of the electromagnetic spectrum can be used synergistically to provide valuable products of land surface properties for reliable assessments of carbon and water fluxes. The high spatial, spectral and temporal resolution VSWIR and TIR observations provided by the proposed Hyperspectral - InfraRed (HyspIRI) mission will enable a new era of global agricultural monitoring, critical for addressing growing issues of food insecurity. To enable predictions at fine spatial resolution (<100m), modeling efforts must rely on a combination of high-frequency temporal and highresolution spa…
Integration of high resolution spatial and spectral data acquisition systems to provide complementary datasets for cultural heritage applications
2010
International audience; Modern optical measuring systems are able to record objects with high spatial and spectral precision. The acquisition of spatial data is possible with resolutions of a few hundredths of a millimeter using active projection-based camera systems, while spectral data can be obtained using filter-based multispectral camera systems that can capture surface spectral reflectance with high spatial resolution. We present a methodology for combining data from these two discrete optical measuring systems by registering their individual measurements into a common geometrical frame. Furthermore, the potential for its application as a tool for the non-invasive monitoring of painti…
Structural Features of β-Cyclodextrin Solvation in the Deep Eutectic Solvent, Reline
2020
The inherently amphiphilic nature of native cyclodextrins (CDs) determines their peculiar molecular encapsulation features, enabling applications such as targeted drug nanodelivery, aroma protection, etc. On the contrary, it may also lead to poor solubility in water and other organic solvents and to potentially detrimental flocking in these media, thus posing limitations to more extensive usage. Here we use small angle X-ray scattering to show that deep eutectic solvent reline (1:2 choline chloride:urea) succeeds in dissolving large amounts of beta-CD (at least 800 mg/mL, compared with the solubility in water of 18 mg/mL), without aggregation phenomena occurring. At the microscopic level, m…
Synthesis and self-assembly of a PEGylated-graphene aerogel
2016
Abstract In the frame of this work, we present, for the first time, the synthesis and self-assembly of an aerogel built by graphene oxide-polyethylene glycol. The synthetic route involves at first the coupling of GO with an amino-terminated polyethylene glycol sample by carbodiimide in aqueous environment, and the subsequent conversion of the hydrogel achieved into an aerogel via freeze-drying. The 3D PEGylated graphene-based aerogel, characterized by spectroscopic, morphological, structural and mechanical analyses, displays an ultralight and highly porous (99.7%) network and possesses high mechanical properties together with a good biocompatibility.
Value Co-Creation Opportunities: Managerial Transformation of Digitisation Risks into Success Factors
2018
This chapter examines the challenges and risks managers in the healthcare sector perceive in relation to the development and implementation of digitised services in a healthcare case organisation. Using data collected from managers, focus group interviews and observation method within the case organisation, the authors present an analysis that demonstrates that the risks and success factors that influence the development and implementation of digital healthcare services are related to (1) setting a clear digital strategy and implementation plan, (2) integration of digital services with the overall process and ICT, (3) committed resources and engagement of personnel, and (4) the organisation…
Solidarietà post-coniugale, assegno di divorzio e autonomia privata
2021
Il saggio esamina la questione dell'assegno di divorzio nella prospettiva della solidarietà post-coniugale, analizzando criticamente l'esito di cripto-indissolubilità del matrimonio che emerge dalla consolidata lettura della relativa obbligazione come tendenzialmente priva di termine finale. The essay examines the issue of the divorce allowance from the perspective of post-marital solidarity, critically analyzing the outcome of the crypto-indissolubility of marriage that emerges from the consolidated reading of the relative obligation as tendentially without a final term.
Preparation and physico-chemical study of inclusion complexes between idebenone and modified beta-cyclodextrins
1996
The inclusion properties of modifiedβ-cyclodextrins (trimethyl-β-cyclodextrin, dimethyl-β-cyclodextrin and hydroxypropyl-β-cyclodextrin) towards idebenone were compared with naturalβ-cyclodextrin. The inclusion complexes were prepared by different methods (coprecipitation, kneading, and freeze-drying) and characterized by differential scanning calorimetry, X-ray diffractometry, UV, CD and NMR spectroscopy. The results obtained by CD and NMR spectroscopy indicate a different orientation of idebenone in dimethyl-β-cyclodextrin with respect to other cyclodextrins. Stability constants of the complexes were determined in water at various temperatures and consequently thermodynamic parameters wer…
Nano-Silica Carriers Coated by Chloramphenicol: Synthesis, Characterization, and Grinding Trial as a Way to Improve the Release Profile
2022
Silica nanoparticles were applied as the carrier of chloramphenicol (2,2-dichloro-N-[(1R,2R)-1,3-dihydroxy-1-(4-nitrophenyl)propan-2-yl]acetamide), and were loaded in a 1% carbopol-based gel (poly(acrylic acid)), which allowed obtainment of an upgraded drug form. The samples of silica materials were obtained by means of modified Stöber synthesis, and their morphological properties were analyzed using Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) method, elemental analysis (EA), thermogravimetric analysis (TGA), analysis of the specific surface properties, X-ray diffraction study (XRD), scanning electron microscope (SEM), and dynamic light scattering (DLS) meth…
Pāra attiecību kvalitātes saistība ar konfliktu risināšanas stiliem sievietēm un vīriešiem
2021
Pētījuma mērķis bija izpētīt, vai pastāv saistība starp pāra attiecību kvalitāti un konfliktu risināšanas stiliem pāra attiecībās sievietēm un vīriešiem. Izpētē piedalījās 96 respondenti vecumā no 25 – 35 gadiem, iedalot sieviešu (n=66; SD=2,93) un vīriešu (n=30; SD=2,30) grupu. Pētījums ir neeksperimentāls, korelatīvi aprakstošs. Instrumentārijs iekļauj divas aptaujas: Uztvertās attiecību kvalitātes komponentu aptauja (Perceived Ralationship Quality Components, PRQC, Fletcher, Simpson & Thomas, 2000); Romantisko partneru konfliktu skala (The Romantic Partner Conflict Scale, Zacchilli, Hendrick, & Hendrick, 2009). No iegūtajiem datiem izriet statistiski nozīmīgas pozitīvas un negatīvas kore…
Studies of network structure and dynamics of e-beam crosslinked PVPs: From macro to nano
2011
Much interest has been paid to develop a variety of radiation-crosslinked hydrated polymeric materials, which swell in water but do not dissolve, as biocompatible materials used for wound healing, drug delivery system, surface-coating material for medically used devices, etc. With the aim of establishing design rules to produce hydrogels of controlled size at the nanoscale and desired internal network structure using conventional electron accelerators and set-ups, here we attempt a description in terms of structural and dynamic properties of polymer networks generated through e-beam irradiation of aqueous solutions of the same model polymer, a commercial grade poly(N-vinyl-pyrrolidone), sub…