Search results for " Structural change"

showing 5 items of 15 documents

Improvement of the photo-stability of polystyrene-block-polybutadiene-block-polystyrene through carbon nanotubes

2015

Abstract The photo-stability of Polystyrene-Polybutadiene-Polystyrene (SBS) based nanocomposites containing bare multi-walled carbon nanotubes (CNTs) and carbon nanotubes bearing carboxylic functional groups (CNTs-COOH) in comparison to that of pristine SBS has been studied. The photo-oxidation of pristine SBS occurs through crosslinking reactions and oxidized species formation and both these processes begin at early stage of exposure. The formation of crosslinking, formerly in polybutadiene phase, assessed by spectroscopical (FTIR), mechanical, dynamic mechanical and rheological analysis, leads to occurrence of internal mechanical stresses in the solid state and the SBS samples become prem…

Solid-state chemistryPolystyrene-polybutadiene-polystyrene copolymerMaterials sciencePolymers and PlasticsCarbon nanotubesCarbon nanotubes; Photo-stability; Polystyrene-polybutadiene-polystyrene copolymer; Structural changes; Condensed Matter Physics; Mechanics of Materials; Polymers and Plastics; Materials Chemistry; 2506; Metals and AlloysCarbon nanotubeCarbon nanotubelaw.inventionchemistry.chemical_compoundPolybutadieneRheologylawPhase (matter)Structural changeMaterials ChemistryMechanics of MaterialFourier transform infrared spectroscopyComposite materialStructural changesNanocompositePolymers and PlasticMetals and AlloysCondensed Matter PhysicsPhoto-stabilitychemistryChemical engineeringMechanics of MaterialsPolystyrene2506
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Biproportional Method for Analysing Interindustry Dynamics: the case of France

1990

Two elements are being presented in this paper: (1) A new and original method for analysing matrix dynamics, called the synthetical biproportional projector method (SBP), which can be used to project input–output tables and compare one with another. (2) Some results for France for the important period 1970–85. The paper starts with the observation that no systematic study of the change in the French productive structure as displayed In the input–output tables (tableaux entries-sorties in France) has ever been made. This is unfortunate, since a complete series of data is now available concerning a key period of the French economic evolution including the petroleum crisis, European integratio…

Structure (mathematical logic)JEL : C - Mathematical and Quantitative Methods/C.C6 - Mathematical Methods • Programming Models • Mathematical and Simulation Modeling/C.C6.C67 - Input–Output ModelsEconomics and EconometricsEngineeringJEL: C - Mathematical and Quantitative Methods/C.C6 - Mathematical Methods • Programming Models • Mathematical and Simulation Modeling/C.C6.C67 - Input–Output ModelsOperations researchbusiness.industryJEL: L - Industrial Organization/L.L1 - Market Structure Firm Strategy and Market Performance/L.L1.L16 - Industrial Organization and Macroeconomics: Industrial Structure and Structural Change • Industrial Price IndicesJEL: D - Microeconomics/D.D5 - General Equilibrium and Disequilibrium/D.D5.D57 - Input–Output Tables and Analysis[SHS.ECO]Humanities and Social Sciences/Economics and FinanceDynamics (music)European integrationJEL : D - Microeconomics/D.D5 - General Equilibrium and Disequilibrium/D.D5.D57 - Input–Output Tables and Analysis[ SHS.ECO ] Humanities and Social Sciences/Economies and financesEvolutionary economicsJEL : L - Industrial Organization/L.L1 - Market Structure Firm Strategy and Market Performance/L.L1.L16 - Industrial Organization and Macroeconomics: Industrial Structure and Structural Change • Industrial Price Indicesbusiness[SHS.ECO] Humanities and Social Sciences/Economics and FinanceMathematical economicsComputingMilieux_MISCELLANEOUS
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Organisaatiokulttuurin ja johtajuusidentiteetin merkitys matriisiorganisaatiomuutoksessa : case-tutkimus

2012

johtaminenorganizational culturestructure and structural changeorganisaatiotorganisaatiotutkimusorganisaatiomuutoksettapaustutkimusorganisaatiokulttuurimatrix organizationleadership identityidentiteettiidentity work and compatibilityjohtajuusmatriisiorganisaatiooperating environment of the organization
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Weathering of low-density polyethylene grafted with itaconic acid in laboratory tests

2011

Polyethylene grafted with itaconic acid was subjected to weathering under laboratory accelerated conditions. The course of the photo-oxidative degradation process of that material was studied by FTIR spectroscopy both through quantitative measurements of changes in absorbance values at selected wave numbers and through measurements of surface area values for absorption bands which were separated by means of deconvolution. The use of both those procedures of quantitative determinations resulted in a general conclusion that the oxidation process was initiated from the very first moment of irradiation, and it produced ketones, acids, esters (intramolecular and of acetate type), peracids, peres…

polyethylenechemistry.chemical_classificationPolymers and PlasticsInorganic chemistryGeneral ChemistryPolymeritaconic acidPolyethylenepolymer structural changesSurfaces Coatings and FilmsAbsorbancechemistry.chemical_compoundLow-density polyethyleneFTIRchemistryageingPolymer chemistryMaterials ChemistryItaconic acidIrradiationAbsorption (chemistry)Fourier transform infrared spectroscopyJournal of Applied Polymer Science
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Past, present, and future of green product innovation

2021

Firms are under constant pressure from various governmental and nongovernmental agencies to switch from conventional environmentally polluting products to green product innovations (GPIs). However, the relevant research pertaining to GPI has been published in a diverse set of journals that vary in their scope and readership and, therefore, the scholarly contribution to the topic remains largely fragmented. This study has utilised a systematic literature review approach to examine the literary corpus on GPI to paint a holistic picture of its different aspects. The content and thematic analysis of 85 studies resulted in the extraction of seven key research themes: organisational capabilities,…

structural changesProduct innovationStrategy and Management:Samfunnsvitenskap: 200::Økonomi: 210::Bedriftsøkonomi: 213 [VDP]Geography Planning and Developmenthandelsystematic literature reviewManagement Monitoring Policy and LawVDP::Samfunnsvitenskap: 200::Statsvitenskap og organisasjonsteori: 240organisational learningVDP::Samfunnsvitenskap: 200::Økonomi: 210innovasjonøkonomiinstitutional pressuresmiljøverngreen product innovation (GPI); institutional pressures; organisational learning; structural changes; systematic literature reviewConstant pressuregreen product innovation (GPI)Product (category theory)BusinessBusiness and International ManagementIndustrial organization
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