Search results for "reduction"

showing 10 items of 2058 documents

Impact of oxydoreduction potential on biosynthesis of volatile compounds in acid skim milk gel: identification and quantification

2008

International audience; Oxydoreduction potential (Eh) is an environmental parameter which defines balances between oxidant species (acceptors of electrons) and reduced species (donors of electrons) of a medium. It may modify the growth capacity of microorganisms, the metabolic fluxes, participate to the quality of fermented products (2, 6, 7) and affect the production and/or stability of volatile compounds (3,5). (...)

aroma compoundgdl[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineeringoxydoreduction potentialgc ms[SDV.IDA]Life Sciences [q-bio]/Food engineering[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering[SDV.IDA] Life Sciences [q-bio]/Food engineeringacid skim milk gel
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Photochemistry of oxidized Hg(I) and Hg(II) species suggests missing mercury oxidation in the troposphere.

2020

8 pags., 5 figs., 2 tabs.

atmospheric chemistryAtmospheric chemistry010504 meteorology & atmospheric sciencesTropospheric chemistryMercury photoreductionchemistry.chemical_elementatmospheric modelingAtmospheric model010501 environmental sciencesPhotochemistry01 natural sciencesTroposphereMercury oxidationComputer SimulationGas-phase mercury reactivitygas-phase mercury reactivity0105 earth and related environmental sciencesmercury photoreductionThermal oxidationMultidisciplinaryAtmospherePhotodissociationCorrectionMercuryModels TheoreticalPhotochemical Processestropospheric chemistryMercury (element)Atmospheric modelingDeposition (aerosol physics)chemistry13. Climate actionAtmospheric chemistry[CHIM.OTHE]Chemical Sciences/OtherOxidation-ReductionProceedings of the National Academy of Sciences of the United States of America
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Vecchi e nuovi problemi in tema di intervento dei creditori nell’esecuzione (note a margine di Cass. S.U. n. 61 del 7 gennaio 2014)

2015

Nel contributo in oggetto l'autore, muovendo dalla decisione delle Sezioni Unite della Cassazione n. 61 del 7 gennaio 2014, coglie l'occasione per riesaminare le vecchie e nuove problematiche sottese all’intervento dei creditori nel processo esecutivo. Il primo tema affrontato è quello della par condicio creditorum, che viene esaminata nella sua storia evolutiva dal Code Napoleon, al suo periodo di massima estensione, dato dal codice del 1940, fino al suo ridimensionamento a seguito delle riforme del 2005. Esamina quindi la possibilità del possibile superamento quoad effectum della distinzione tra intervento di creditori con titolo e senza titolo, alla luce delle evoluzioni della giurisprud…

b) the same par condicio creditorum principle and the consequent possibility of intervention of third party in the execution. It concludes however that a revolution like the aforesaid explained would be only apparently advantageouOld and new problems related to the intervention of creditors in the expropriation (marginal notes at Cass. Sez. Un. January 7 2014 n. 61) Moving from the decision of the Sezioni Unite n. 61/2014 the author takes the opportunity to re-examine old and new problems related to the intervention of creditors in the forceable execution. The first major theme concerns par condicio creditorum which is examined in its evolutionary history since the Code Napoleon through its period of maximum extension (the Code of 1940) until its reduction as a result of the reforms of 2005. The author examines the possibility to overcome quoad effectum the distinction between sine titulo et cum titulo interveners in light of jurisprudence’s evolution between 1978 2009 and 2014. The possibility in particular concerns those creditors sine titulo the where credit has not been contested (ex art. 499 c.p.c.) by the debtor seek payment and partecipate to distribution. In the last section the author examines the possibilities for other creditors to contest the intervention of the creditor sine titulo ex art. 499 c.p.c. (utendo iuribus in subrogation in case of inaction of the debtor) or in the distribution phase ex art. 512 c.p.c. He concludes that the only person that will be really damaged if he doesn’t contest - ex art. 499 c.p.c. - the credit it is precisely the debtor. He also notes that in the legislation of the last decade the apparent effort to reduce the numbers of judicial enquiry incidental to forceable execution will never be achieved unless it’s eliminated in radice: a) the existence in our system of extrajudicial enforcement titulaSettore IUS/15 - Diritto Processuale Civilesince it would lead to increase autonomous expropriations (one for each creditor who can today intervene) and to increment judicial enquiries in order to form enforceable judgments
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INTERVENTI DI POTATURA VERDE PER LA GESTIONE DELLA MATURAZIONE DELL’UVA NELLA CV MERLOT IN AMBIENTE CALDO ARIDO

2016

Considering the predicted scenarios of climate change for the near future, Mediterranean vineyards, may face substantial shifts in precipitation, atmospheric conditions and temperature, resulting in higher winter rainfall, together with drier and hotter summers. All potentially contributing to an uncoupling of technological and phenolic ripeness in Vitis vinifera grapevines, due to berry ripening taking place in the hottest month of the year, resulting in wines with high alcohol content and low titratable acidity. A reduced sugar accumulation rate in the berry may delay berry maturation and subsequently counteract these effects. The aim of this study was to delay berry maturation in cv Merl…

berry ripening leaf removal source reduction climate changeSettore AGR/03 - Arboricoltura Generale E Coltivazioni Arboree
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Connections Between Single-Level and Bilevel Multiobjective Optimization

2011

The relationship between bilevel optimization and multiobjective optimization has been studied by several authors and there have been repeated attempts to establish a link between the two. We unify the results from the literature and generalize them for bilevel multiobjective optimization. We formulate sufficient conditions for an arbitrary binary relation to guarantee equality between the efficient set produced by the relation and the set of optimal solutions to a bilevel problem. In addition, we present specially structured bilevel multiobjective optimization problems motivated by real-life applications and an accompanying binary relation permitting their reduction to single-level multiob…

bilevel optimizationMathematical optimizationMatematikControl and OptimizationRelation (database)Multiobjective programmingBinary relationTwo-level optimizationApplied MathematicsMulticriteriaManagement Science and Operations ResearchSingle levelmonitavoiteoptimointiMulti-objective optimizationBilevel optimizationSet (abstract data type)Reduction (complexity)Theory of computationmultiobjective optimizationMathematicsMathematics
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Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- and N -Alkyl-4-Pyridylporphyrins in Nonaqueous Media

2015

International audience; Twelve structurally related pyridyl and meso-N-methylpyridylporphyrin derivatives are investigated electrochemically in different nonaqueous media. The UV/Vis spectrum of each newly investigated porphyrin was measured before and after electro-reduction and, based on this data, the site of electron transfer is proposed. An interaction occurs between the meso-pyridyl or meso-N-alkyl-4-pyridyl substituents and the porphyrin p-ring system, the magnitude of which depends upon the number of linked pyridyl or N-alkyl-4-pyridyl groups in the compound, the solvent, the supporting electrolyte, and/or other anions added to the solution.

bindingSupporting electrolyteInorganic chemistrycationic porphyrinreductiondnanElectrochemistryporphyrinsdimethylformamide[ CHIM ] Chemical SciencesCatalysischemistry.chemical_compoundElectron transferPolymer chemistry[CHIM]Chemical SciencesAlkylchemistry.chemical_classificationnonaqueous mediacomplex-formationChemistryn-dimethylformamidespectral characterizationaggregationFree basespectroelectrochemistryPorphyrinSolventinteracting centerspotentialselectrochemistry
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The catalytic mechanism of glyceraldehyde 3-phosphate dehydrogenase from Trypanosoma cruzi elucidated via the QM/MM approach

2013

Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been identified as a key enzyme involved in glycolysis processes for energy production in the Trypanosoma cruzi parasite. This enzyme catalyses the oxidative phosphorylation of glyceraldehyde 3-phosphate (G3P) in the presence of inorganic phosphate (Pi) and nicotinamide adenosine dinucleotide (NAD+). The catalytic mechanism used by GAPDH has been intensively investigated. However, the individual roles of Pi and the C3 phosphate of G3P (Ps) sites, as well as some residues such as His194 in the catalytic mechanism, remain unclear. In this study, we have employed Molecular Dynamics (MD) simulations within hybrid quantum mechanical/molecular …

biocatalysisEnzims proteolíticsParàsitsStereochemistryTrypanosoma cruziGeneral Physics and AstronomyDehydrogenaseMolecular Dynamics SimulationNicotinamide adenine dinucleotideOxidative PhosphorylationSubstrate Specificityglyceraldehyde 3 phosphate dehydrogenaseQM/MMchemistry.chemical_compoundstomatognathic systemGlyceraldehydePhysical and Theoretical Chemistrynicotinamide adenine dinucleotideGlyceraldehyde 3-phosphate dehydrogenasechemistry.chemical_classificationbiologyGlyceraldehyde-3-Phosphate DehydrogenasesActive siteNADmolecular dynamicsEnzymechemistryBiochemistryBiocatalysisbiology.proteinQuantum TheoryNAD+ kinaseOxidation-ReductionPhysical Chemistry Chemical Physics
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Exploiting the Redox Activity of MIL-100(Fe) Carrier Enables Prolonged Carvacrol Antimicrobial Activity

2022

The design of efficient food contact materials that maintain optimal levels of food safety is of paramount relevance to reduce the increasing number of foodborne illnesses. In this work, we develop a smart composite metal-organic framework (MOF)-based material that fosters a unique prolonged antibacterial activity. The composite is obtained by entrapping a natural food preserving molecule, carvacrol, into a mesoporous MIL-100(Fe) material following a direct and biocompatible impregnation method, and obtaining particularly high payloads. By exploiting the intrinsic redox nature of the MIL-100(Fe) material, it is possible to achieve a prolonged activity against Escherichia coli and Listeria i…

biocompositesantimicrobial activityUNESCO::CIENCIAS TECNOLÓGICASBacterisAliments MicrobiologiaMOFsAnti-Bacterial AgentsLysergic Acid DiethylamideCymenesGeneral Materials ScienceMaterialsOxidation-Reductioncontrolled deliveryMetal-Organic Frameworksfood packaging
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Less Data Same Information for Event-Based Sensors: A Bioinspired Filtering and Data Reduction Algorithm

2018

Sensors provide data which need to be processed after acquisition to remove noise and extract relevant information. When the sensor is a network node and acquired data are to be transmitted to other nodes (e.g., through Ethernet), the amount of generated data from multiple nodes can overload the communication channel. The reduction of generated data implies the possibility of lower hardware requirements and less power consumption for the hardware devices. This work proposes a filtering algorithm (LDSI&mdash

bioinspired event filteringComputer sciencedynamic vision sensor02 engineering and technologylcsh:Chemical technology01 natural sciencesBiochemistryArticleAnalytical ChemistryReduction (complexity)0202 electrical engineering electronic engineering information engineeringneuromorphic systemslcsh:TP1-1185Electrical and Electronic EngineeringEnginyeria DissenyInstrumentationEnginyeria elèctricaEvent (computing)Noise (signal processing)010401 analytical chemistryFilter (signal processing)Atomic and Molecular Physics and Optics0104 chemical sciencesevent data reductionFPGA implementationspike-basedLookup table020201 artificial intelligence & image processingevent-based sensorsAlgorithmData reductionSensors
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Changes of morphogenic competence in mature Pinus sylvestris L. buds in vitro.

2002

The effects of season and cold storage on morphogenic competence in mature Pinus sylvestris buds were investigated. Peroxidase and polyphenol oxidase activity were measured as markers of oxidative metabolism. No growth in vitro was observed on explants detached from the end of January until the beginning of March. Brachioblasts, each with a couple of needles, formed on 11 % of the buds without macrostrobili that were detached in early April and introduced immediately into culture. Of the explants detached in late July, 15 % formed shoots with brachioblasts and needles. The lowest activity of peroxidase and polyphenol oxidase in pine buds was observed from the end of April until the beginnin…

biologyShort CommunicationsCold storagefood and beveragesPinus sylvestrisPlant SciencePolyphenol oxidase activityPinusPolyphenol oxidaseIn vitroCold TemperatureOxygenPlant LeavesCulture TechniquesBotanyShootbiology.proteinCatechol oxidaseOxidation-ReductionBiomarkersCatechol OxidasePlant ShootsPeroxidaseExplant culturePeroxidaseAnnals of botany
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