Search results for "treatments"

showing 10 items of 144 documents

Mechanical and Thermal Properties of Insulating Sustainable Mortars with Ampelodesmos mauritanicus and Pennisetum setaceum Plants as Aggregates

2021

The use of natural fibers in cement composites is a widening research field as their application can enhance the mechanical and thermal behavior of cement mortars and limit their carbon footprint. In this paper, two different wild grasses, i.e., Ampelodesmos mauritanicus, also called diss, and Pennisetum setaceum, also known as crimson fountaingrass, are used as a source of natural aggregates for cement mortars. The main purpose is to assess the possibility of using the more invasive crimson fountaingrass in place of diss in cement-based vegetable concrete. The two plant fibers have been characterized by means of scanning electron microscopy (SEM), helium picnometry and thermogravimetric an…

TechnologyThermogravimetric analysisMechanical characterizationMaterials scienceQH301-705.5Scanning electron microscopeQC1-9990211 other engineering and technologies02 engineering and technologyCrimson fountaingrassSustainable mortarThermal conductivityThermal insulationSurface treatments021105 building & constructionGeneral Materials ScienceFiberBiology (General)Composite materialPorosityQD1-999InstrumentationFluid Flow and Transfer ProcessesCementReinforced mortarbusiness.industryTPhysicsProcess Chemistry and TechnologyGeneral EngineeringEngineering (General). Civil engineering (General)021001 nanoscience & nanotechnologyComputer Science ApplicationsChemistryThermal conductivityTA1-2040Natural fibersMortarDiss0210 nano-technologybusinessApplied Sciences
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Rapid and eco-friendly synthesis of graphene oxide-silica nanohybrids

2014

The increasing interest in Graphene oxide (GO) is due to many issues: the presence of both sp2-conjugated atoms and oxygen-containing functional groups provides a strong hydrophilicity and the possibility to further functionalize it with other molecules (i.e. π-π interactions covalent attachment etc.) [1]. Furthermore since the GO is biocompatible and noncytotoxic many studies have been recently focused on the development of GO-based nanodevices for bioimaging DNA detection drug delivery. Due to their low cytotoxicity and large internal surface area silica nanoparticles have been taken into account as promising material for biolabeling and drug loading/delivery. Particular consideration has recently been demonstrated for GO-silica composites because of the potentialities for electrical applications their chemical inertia and stability toward ions exposure. The possibility to combine the extraordinary properties of GO and silica offers several advantages for the realization of nanoprobes for biological applications and of biosensor [12]. The strategy for the fabrication of GO-nanosilica nanohybrids can be schematized as follows: (i) synthesis of GO by oxidizing graphite powder with the method described by Marcano et al. [3] (ii) Preparation of oxygen-loaded silica nanoparticles by thermal treatments in controlled atmosphere in order to induce high NIR emission at 1272 nm from high purity silica nanoparticles. (iii) preparation of GrO-silica nanohybrid films via rapid solvent casting in water. The nanohybrids were tested by XPS FTIR Raman analysis UV photoluminescence analysis TGA Zeta potential measurements electrical tests AFM and SEM. Several nanohybrids were prepared by combining two different typologies of GO and two different samples of silica.
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Profiling of compounds and degradation products from the postharvest treatment of pears and apples by ultra-high pressure liquid chromatography quadr…

2010

This study deals with a simple strategy to pinpoint potential unknown compounds in full scan mass spectrometry (MS) experiments. Forty samples of apples and pears intended for human consumption were analyzed by ultra-high performance liquid chromatography quadrupole-time-of-flight (UPLC–QqTOF-MS), after extraction of the possible contaminants by rinsing the peel of the fruit with ethyl acetate. The peaks were visually recognized in the total ion chromatogram (TIC). Two major types of postharvest treatments were detected in this set of samples: imazalil (IMZ)/ethoxyquin (EQ) and thiabendazole (TBZ)/diphenylamine (DPA). The present work also describes the metabolites formed by degradation of …

Time FactorsFood HandlingMetaboliteEthyl acetateFood ContaminationMass spectrometryHigh-performance liquid chromatographyUnknown identificationMass SpectrometryAnalytical ChemistryFood safetyPyruschemistry.chemical_compoundMetabolite confirmationChromatography High Pressure LiquidPostharvest treatmentsEthoxyquinChromatographyUPLC–QqTOF-MSfungiPesticide ResiduesDiphenylamineAgricultureMass chromatogramFungicides IndustrialchemistryMalusPostharvest
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Endothelin-1-Mediated Drug Resistance in EGFR-Mutant Non-Small Cell Lung Carcinoma.

2020

Abstract Progression on therapy in non-small cell lung carcinoma (NSCLC) is often evaluated radiographically, however, image-based evaluation of said therapies may not distinguish disease progression due to intrinsic tumor drug resistance or inefficient tumor penetration of the drugs. Here we report that the inhibition of mutated EGFR promotes the secretion of a potent vasoconstrictor, endothelin-1 (EDN1), which continues to increase as the cells become resistant with a mesenchymal phenotype. As EDN1 and its receptor (EDNR) is linked to cancer progression, EDNR-antagonists have been evaluated in several clinical trials with disappointing results. These trials were based on a hypothesis that…

Vascular Endothelial Growth Factor ACancer ResearchLung NeoplasmsAmbrisentanOncology and CarcinogenesisDrug ResistanceBiological AvailabilityAntineoplastic AgentsDrug resistanceCell LineMiceErlotinib HydrochlorideGefitinibIn vivomedicineAnimalsHumansOncology & CarcinogenesisNon-Small-Cell LungProtein Kinase InhibitorsLungCancerTumor microenvironmentTumorEndothelin-1business.industryCarcinomaLung CancerCancerEvaluation of treatments and therapeutic interventionsGefitinibmedicine.diseaseEndothelin 1Xenograft Model Antitumor AssaysErbB ReceptorsOncologyVasoconstriction5.1 Pharmaceuticals6.1 PharmaceuticalsCancer cellMutationCancer researchNeoplasmDevelopment of treatments and therapeutic interventionsbusinessmedicine.drug
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NMR relaxation in modern wood and treated and untreated wood from a XVI century wooden statue

2007

Longitudinal (T1) relaxation data are presented for European lime (Tilia cordata Mill) wood samples, a modern sample and two from a XVI century wooden statue, one of which samples is treated with Paraloid B72 for preservation. The 1H signals from liquid and solid are separated in the free induction decays (FID). T1 distributions are obtained by UPEN and show two resolved peaks for the liquid component of either untreated wood but a wide distribution for the liquid of the treated sample. In each case, the solid component showed a single peak, which for either untreated sample was at about the position of the longer T1 liquid peak. We compute geometric-mean times, T1-gm, 2.1 and 36 ms for the…

WOOD TREATMENTSMaterials scienceBiomedical EngineeringBiophysicsNMR RELAXOMETRYCULTURAL HERITAGERadiology Nuclear Medicine and imagingStatueAncient historyWOODTWO-SITE EXCHANGE MODELMagnetic Resonance Imaging
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ELECTROCHEMICAL ABATEMENT OF ORGANIC POLLUTANTS IN WATER IN MICROFLUIDIC DEVICES

2012

Wastewater treatments Micro reactor
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ELECTROCHEMICAL ABATEMENT OF AZO 7 IN WATER SOLUTION IN MACRO AND MICRO CELLS

2012

Wastewater treatments Micro reactor Hydrogen peroxide Electro-Fenton Acid orange 7
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Water capillary absorption in porous media in different wettability conditions studied by Quantitative MRI and X-ray CT

2007

X-ray computed tomography (CT) and magnetic resonance imaging (MRI) have been successfully applied to study both the capillary properties of several samples of Lecce stone and the performances of treatments used for protection and conservation of historical stone artifacts. The presence of water inside the sample may be visualized by both MRI and X-ray CT. For the treated samples, the different dynamics of water absorption gives indirectly the efficacy of the polymer in the rock.

X-ray CTstone protectionMaterials sciencewater capillary rise in porous mediaCapillary actionXCTBiomedical EngineeringBiophysicsAnalytical chemistryX-raystone wettabilityQuantitative MRIADSORBTION KINETICSporous mediaRadiology Nuclear Medicine and imagingWettingIDROPHOBIC TREATMENTSAbsorption (electromagnetic radiation)Porous mediumWETTABILITYMRI
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Disentangling local agronomic practices from agricultural landscape effects on pest biological control

2019

International audience; The biological control of crop pests is a valuable service provided by various beneficial organisms that are naturally present in agricultural landscapes. Semi-natural habitats has long been recognized as essential to preserve beneficial insects, but proof of their efficiency to enhance biological control of pests remains non conclusive. Here, we examined the variability of landscape effect on biological pest control and the way local agronomic practices may modulate it. Biological pest control was monitored in 80 commercial fields (arable crops and orchards) during three consecutive years in four contrasting French agricultural landscapes distributed along a double …

[SDE] Environmental Sciencespesticide treatmentsaphidmoth eggconservation biological controlfungi[SDE]Environmental Sciencesfood and beverageslandscape complexityagricultural practicespredationseedsentinel prey
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Transcriptome of the early steps of Botrytis cinerea infection

2010

International audience

[SDV] Life Sciences [q-bio][SDV]Life Sciences [q-bio]pathogènepied de vignefungicide treatmentspathogenstraitement fongiqueComputingMilieux_MISCELLANEOUSinfectiongrapevine
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