Search results for "solu"

showing 10 items of 7577 documents

Experimental assessment of reverse electrodialysis in closed loop configuration fed by NH4HCO3-water solutions

2018

Closed loop reverse electrodialysis is a novel technology for converting low-temperature waste heat into electric energy. This innovative heat engine consists of two units: (i) a reverse electrodialysis unit where power is produced exploiting the concentration difference between a diluted and a concentrated salt solution and (ii) a thermally driven regeneration unit where low-grade waste heat is used to re-establish the original salinity gradient between the two salt solutions. Among all the possible salt solutions suitable as working fluid in such application, Thermolytic salts solutions, in particular Ammonium bicarbonate solutions, may be promising thanks to their characteristic thermall…

Thermolytic salts Ammonium Bicarbonate solutions Reverse electrodialysis Heat Engine.
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Tunable Structure and Properties of Segmented Thermoplastic Polyurethanes as a Function of Flexible Segment

2019

Segmented thermoplastic polyurethanes (PUs) were synthetized using macrodiols with different functional groups (carbonate, ester, and /or ether) as a segment with a molar mass of 1000 and 2000 g/mol, and 4,4&rsquo

ThermoplasticMaterials scienceSolucions polimèriquesPolymers and PlasticsMiscibilityArticlelcsh:QD241-441Thermoplastic polyurethaneDifferential scanning calorimetrylcsh:Organic chemistryUltimate tensile strengthmechanical and thermal properties.Shore durometermechanical and thermal propertiesPolycarbonateComposite materialdegradationchemistry.chemical_classificationTermoplàsticsGeneral ChemistryDynamic mechanical analysisCiència dels materialsthermoplastic polyurethanechemistryvisual_artvisual_art.visual_art_mediumflexible segmentphase segregationPolymers
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Research data supporting "Antiferromagnetism and p-type conductivity of non-stoichiometric nickel oxide thin films"

2019

Raw data for the manuscript. The dataset contains the files used for the figures and tables in the Article and its Supporting Information. See the Readme file for a detailed description of the dataset.

Thin FilmsNickel OxideChemical Vapor DepositionAtomic Layer DepositionData_FILESSolution Deposition
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Characterization of Hydrophilic Gold(I) N-Heterocyclic Carbene (NHC) Complexes as Potent TrxR Inhibitors Using Biochemical and Mass Spectrometric App…

2017

We report here on the synthesis of a series of mono-and dinuclear gold(I) complexes exhibiting sulfonated bis(NHC) ligands and novel hydroxylated mono(NHC) Au(I) compounds, which were also examined for their 'biological activities. Initial cell viability assays show strong antiproliferative activities of the hydroxylated mono(NHC) gold compounds (8 > 9 > 10) against 2008 human ovarian cancer cells even after 1 h incubation. In order to gain insight into the mechanism of biological action of the gold compounds, their effect on the pivotal cellular target seleno-enzyme thioredoxin reductase (TrxR), involved in the maintenance of intracellular redox balance, was investigated in depth. Th…

Thioredoxin Reductase 1AuranofinSilverStereochemistryThioredoxin reductaseThioredoxin Reductase 2WATER-SOLUBLE RUTHENIUM(II)Antineoplastic Agents010402 general chemistryG-quadruplexLigandsIN-VITRO CYTOTOXICITYLIGANDS SYNTHESIS01 natural sciencesInorganic Chemistrychemistry.chemical_compoundDrug StabilityThioredoxin Reductase 1Coordination ComplexesTHIOREDOXIN REDUCTASE INHIBITIONCell Line TumormedicineOrganogold CompoundsAnimalsHumansCRYSTAL-STRUCTURESPhysical and Theoretical ChemistryCANCER CELLSBIOLOGICAL-PROPERTIES010405 organic chemistryChemistryMOLECULAR-MECHANISMSDNA0104 chemical sciencesRatsG-QuadruplexesGlutathione ReductaseSolubilityBiological targetCancer cellPLATINUM ANTICANCER DRUGSMETAL-COMPLEXESGoldReactive Oxygen SpeciesCarbeneHydrophobic and Hydrophilic InteractionsOrganogold Compoundsmedicine.drugInorganic Chemistry
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Epistemic and didactic values of the demonstrative process in different cultures: a case study in Geometry with Chinese and Italian students

2011

This paper presents same key findings of the research project conducted by G.R.I.M. of Palermo on the approaches to justification and proof in Geometry by investigating how Chinese and Italian teachers and students taught particular geometrical topics refereed to different epistemic and didactic values related to own culture. It was found that Chinese teachers and students emphasized justification of the proof by a stressed visual verification based on some metarules linked with the structure of their own written language and defined as historical Chinese modus operandi in the Jiuzhang Suanshu. The Italians paid close attention to mathematical proof by a hypoxemic deductive system defined on the Euclide’ Elements. The geometrical problem discussed on the paper was defined and presented as “one problem multiple solution problems” and “one problem multiple changes”. Important aspect of the case study discussed in the paper focus on the mediation of knowledge between Chinese and Italian students involved in multicultural class. According to us these kind of activities can establish possibilities for the students to confront their self with different cultural social and educational prospective of knowledge discovering the power of mathematics as tool of negotiation in multicultural class?Settore MAT/04 - Matematiche Complementari
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Three solutions for a Neumann boundary value problem involving the p-Laplacian

2005

In this note we prove the existence of an open interval ]λ', λ"[ for each λ of which a Neumann boundary value problem involving the p-Laplacian and depending on λ admits at least three solutions. The result is based on a recent three critical points theorem.

Three solutionslcsh:Mathematicsp-LaplacianNeumann problemCritical pointslcsh:QA1-939Le Matematiche
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Association of Thyroid Function Test Abnormalities and Thyroid Autoimmunity With Preterm Birth A Systematic Review and Meta-analysis

2019

Preterm birth complicates 5% to 15% of births worldwide, and although it is the most important direct cause of morbidity and mortality in children younger than 5 years, no known risk factors can be identified in the majority of cases. However, overt hypothyroidism and hyperthyroidism during pregnancy are well-known risk factors for preterm birth, and as such, the purpose of this study was to assess whether thyroid function test abnormalities and thyroid peroxidase (TPO) antibody positivity were associated with preterm birth. The study conducted a systematic review on the association of thyroid function or autoimmunity with preterm birth published from database inception to March 18, 2018, w…

Thyrotropin/bloodIodide Peroxidase/immunologyPremature Birth/etiologyThyrotropinHypothyroidism/complicationsThyroid Function Tests01 natural sciencesThyroxine/blood0302 clinical medicineMaternal hypothyroidismThyroid Diseases/bloodPregnancyEuthyroid030212 general & internal medicine030219 obstetrics & reproductive medicinebiologymedicine.diagnostic_testObstetricsThyroid diseaseAbsolute risk reductionObstetrics and GynecologyGestational ageGeneral MedicinePremature birthPremature BirthFemaleThyroid functionmedicine.drugAdultendocrine systemmedicine.medical_specialtyLevothyroxineGestational AgeIodide PeroxidaseThyroid function testsAutoimmune Diseases03 medical and health sciencesHypothyroidismThyroid peroxidasemedicineVery Preterm BirthHumans0101 mathematicsAutoantibodiesPregnancybusiness.industry010102 general mathematicsInfant NewbornInfantOdds ratioNewbornmedicine.diseaseThyroid DiseasesPregnancy Complications/bloodPregnancy ComplicationsThyroxineAutoimmune Diseases/bloodbiology.proteinAutoantibodies/bloodbusiness
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Potential Application of Voltammetry of Microparticles for Dating Porcine Blood-based Binding Media used in Taiwanese Architectural Polychromies

2012

A method for dating Hemoglobine-containing archaeological samples using the voltammetry of microparticles is described. This is based on the record of the voltammetric response of such materials attached to paraffin-impregnated graphite electrodes in contact with aqueous acetate buffer. Signals attributable to the Fe(III)/Fe(II) iron couple and their catalytic enhancement in the presence of H(2)O(2) can be correlated, via first-order reaction kinetics, with the time of aging of the samples. The method has been applied to the study and dating of the polychromed architectural decoration of different parts of the architectural complex of the Longshan Temple in Lukang (18(th)  century, Taiwan).

Time FactorsAqueous solutionSwineChemistryOrganic ChemistryTaiwanAnalytical chemistryElectrochemical TechniquesHydrogen PeroxideGeneral ChemistryFerric CompoundsBiochemistryCatalysisGas Chromatography-Mass SpectrometryCatalysisHemoglobinsAnimalsGraphiteFerrous CompoundsElectrodesVoltammetryPorcine bloodGraphite electrodeNuclear chemistryChemistry - An Asian Journal
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A new biodegradable and biocompatible hydrogel with polyaminoacid structure

2007

The preparation and physicochemical and biological characterization of a novel polyaminoacid hydrogel have been reported. The ,-poly(N-2- hydroxyethyl)-dl-aspartamide (PHEA) has been used as a starting polymer for a derivatization reaction with methacrylic anhydride (MA) to give rise to the methacrylate derivative named PHM. Photocrosslinking of PHM has been performed in aqueous solution at 313 nm and in the absence of toxic initiators. PHM-based hydrogel has been characterized by scanning electron microscopy, X-ray diffractometry, swelling measurements in aqueous media; the degradation of PHM-based hydrogel has been evaluated as a function of time in the absence or in the presence of ester…

Time FactorsBiocompatibilityCell SurvivalSurface PropertiesChemistry PharmaceuticalPharmaceutical ScienceMethacrylic anhydrideBiocompatible MaterialsMicroscopy Atomic ForceMethacrylateDosage formchemistry.chemical_compoundPolymethacrylic AcidsX-Ray DiffractionSpectroscopy Fourier Transform InfraredPolymer chemistryHumansTechnology PharmaceuticalDrug CarriersAqueous solutionHydrolysisEsterasestechnology industry and agricultureWaterHydrogelshydrogels FT-IRBlood ProteinschemistrySelf-healing hydrogelsDrug deliveryMicroscopy Electron ScanningK562 CellsPeptidesDrug carrierPorosityProtein BindingNuclear chemistryInternational Journal of Pharmaceutics
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Fluctuation Methods To Study Protein Aggregation in Live Cells: Concanavalin A Oligomers Formation

2011

Prefibrillar oligomers of proteins are suspected to be the primary pathogenic agents in several neurodegenerative diseases. A key approach for elucidating the pathogenic mechanisms is to probe the existence of oligomers directly in living cells. In this work, we were able to monitor the process of aggregation of Concanavalin A in live cells. We used number and brightness analysis, two-color cross number and brightness analysis, and Raster image correlation spectroscopy to obtain the number of molecules, aggregation state, and diffusion coefficient as a function of time and cell location. We observed that binding of Concanavalin A to the membrane and the formation of small aggregates paralle…

Time FactorsCell SurvivalCellSpectroscopy Imaging and Other TechniquesBiophysicsProtein aggregationCell morphologyCell membraneDiffusion03 medical and health scienceschemistry.chemical_compoundMice0302 clinical medicineProtein structure2-NaphthylaminemedicineConcanavalin AAnimalsconfocal microscopy super resolution protein aggregation kinetics in live cells amyloid related pathologiesAnnexin A5Protein Structure QuaternaryCell Shape030304 developmental biology0303 health sciencesbiologySpectrum AnalysisCell MembraneFibroblastsEmbryo MammalianCell biologyMembranemedicine.anatomical_structurechemistryConcanavalin Abiology.proteinLaurdan030217 neurology & neurosurgeryFluorescein-5-isothiocyanateLaurates
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