Search results for "O2"

showing 10 items of 1115 documents

Wpływ błędów termomodernizacyjnych budynków użyteczności publicznej na poziom jakości powietrza wewnętrznego

2016

Remonty obiektów użyteczności publicznej, a szczególnie budynków zabytkowych, powinny zapewniać,nie tylko poprawę ich stanu technicznego i obniżenie energochłonności, ale także stwarzać warunki do występowania w nich odpowiedniego poziom jakości powietrza wewnętrznego. W artykule przedstawiono wyniki badań wpływu zakresu modernizacji obiektów, obciążenia osobowego, czasu przebywania osób w pomieszczenia oraz kubatury sal i rodzaju stosowanego systemu wentylacji naturalnej i mechanicznej na przebieg, a także szybkość zmian stężenia ditlenku węgla w powietrzu wewnętrznym. Badania te przeprowadzono w ośmiu pomieszczeniach zarówno administracyjnych, jak i audytoryjnych o różnej wielkości i prze…

akość powietrza wewnętrznegowentylacjaszybkość zmian stężenia CO2stężenie ditlenku węglaBudownictwo i Inżynieria Środowiska
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Photodegradation of lincomycin in aqueous solution

2006

Aqueous solutions of lincomycin were irradiated with UV light in homogeneous and heterogeneous systems. Lincomycin disappeared in both systems but the presence ofTiO2noticeably accelerated the degradation of the antibiotic in comparison with direct photolysis. The rate of decomposition was dependent on the concentration of lincomycin and followed a pseudo-first-order kinetics. Photolysis involved only the oxidation of lincomycin without mineralization. Differently, the treatment withTiO2and UV light resulted in a complete mineralization of the antibiotic. The degradation pathways involved S- and N-demethylation and propyldealkylation. The mineralization of the molecule led to the formation …

animal diseaseslcsh:TJ807-830Kineticslcsh:Renewable energy sourcesPhotochemistrychemistry.chemical_compoundmedicineGeneral Materials ScienceAmmoniumSulfatePhotodegradationSettore ING-IND/24 - Principi Di Ingegneria ChimicaAqueous solutionRenewable Energy Sustainability and the EnvironmentChemistrylyncomicin photodegradation TiO2General ChemistryMineralization (soil science)biochemical phenomena metabolism and nutritionbacterial infections and mycosesDecompositionAtomic and Molecular Physics and OpticsLincomycincarbohydrates (lipids)Settore CHIM/07 - Fondamenti Chimici Delle Tecnologiemedicine.drug
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Raman spectral identification of phase distribution in anodic titanium dioxide coating

2017

Growing need for cleaner environment and energy production has brought about a hunt for perspective materials. One of such perspective materials is titanium dioxide (TiO2, titania) due to its chemical stability and photocatalytic properties. Titania can be synthesized through many methods but anodization process is one of the prevailing methods to produce high active surface nanostructured titania. Various anodization electrolytes produce different polymorphs of TiO2. Uniform phase distribution on the surface is crucial for higher photocatalytic activity. In this research, the influence of two electrolytes on polymorph phase distribution of TiO2 was investigated. Phase distribution correlat…

anodizationMaterials scienceSolid-state physics02 engineering and technologyengineering.material010402 general chemistry01 natural sciences7. Clean energysymbols.namesakechemistry.chemical_compoundCoatingPhase (matter)media_common.cataloged_instanceTiO2European unionRamanmedia_commonGeneral EngineeringStructure:NATURAL SCIENCES::Physics [Research Subject Categories]021001 nanoscience & nanotechnologyEngineering physics0104 chemical sciencesAnodechemistryTitanium dioxidesymbolsengineering0210 nano-technologyRaman spectroscopy
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WO 3 as Additive for Efficient Photocatalyst Binary System TiO 2 /WO 3

2021

The financial support provided by Scientific Research Project for Students and Young Researchers No. SJZ/2018/9 implemented at the Institute of Solid State Physics, University of Latvia is greatly acknowledged. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the Euro-pean Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART².

anodizationtio2/wo3tio2 nanotubesPhysicsQC1-999TiO2/WO302 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical scienceselectrophoretic depositionthin filmsWO3wo3:NATURAL SCIENCES [Research Subject Categories]TiO2 nanotubesAnodization0210 nano-technologyLatvian Journal of Physics and Technical Sciences
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Cu-dopēto titāna dioksīda DFT modelēšana antibakteriālo īpašību izpētei

2022

Titāna dioksīda (TiO2) visu trīs polimorfu (anatass, rutils, brokīts) nanodaļiņām piemīt antibakteriālās īpašības, tomēr vislabāk tās ir izteiktas anatasam. TiO2 antibakteriālās īpašības var skaidrot ar tā dabu - tas ir pusvadītājs - fotokatalizators. Lai uzlabotu fotokatalītiskās īpašības, TiO2 iespējams dopēt. Šajā darbā tiek aplūkotas divu TiO2 polimorfu - anatasa un rutila - dopēšana ar vara (Cu) atomiem, kas, balstoties uz eksperimentāliem datiem, var sekmēt antibakteriālo īpašību uzlabošanos. Tika uzbūvēti anatasa un rutila tilpuma un virsmas modeļi bez un ar Cu atomu, no pirmajiem principiem tiek aprēķināta tīra un ar Cu dopēto TiO2 divu polimorfu (anatasa, rutila) tilpuma fāze, tiek…

aprēķini no pirmajiem principiemFizikafotokatalīzeCu dopēšanatitāna dioksīds (TiO2)
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Augsnes kartēšana paugurainēs vides aizsardzības nolūkos: problēmas un risinājumi

2020

Maģistra darba mērķis ir izstrādāt priekšlikumus augsnes kartēšanai paugurainēs, lai nodrošinātu rīcības augsnes degradācijas ierobežošanai un datu apkopošanu CO2 emisiju aprēķiniem. Veiktais pētījums sniedz plašu informāciju par augšņu izplatību, daudzveidību, to svarīgākajām īpašībām un galvenajiem ietekmējošajiem faktoriem, kas veicina augšņu nomaiņu paugurainā reljefā. Tas nepieciešams ne tikai, lai novērtētu pašreizējo augsnes stāvokli, bet arī lai savlaicīgi novērstu augsnes degradāciju un plānotu potenciālo zemes izmantošanas veidu nākotnē. Papildus tam informācija nepieciešama, lai sniegtu kvalitatīvu materiālu tuvākajos gados notiekošajam Norvēģijas finanšu instrumentu finansiāli a…

augsnes erozijaCO2 emisijasVides zinātneaugsnes degradācijaorganiskais ogleklis
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Uptake of Betanin and Indicaxanthin by Caco-2 cell monolayer.

2009

betalains Caco2 cells bioavailability
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Ennalta määrätyn ja sykeohjatun blokkiharjoittelun vertailu : kahdeksan viikon intensiivisen harjoitusjakson vaikutukset kestävyyssuorituskykyyn

2016

Korkeaintensiteettisen kestävyysharjoittelun blokkiohjelmointi on havaittu tehokkaaksi tavaksi parantaa kestävyyssuorituskykyä. Riittävän palautumisen merkitys korostuu kuormittavien harjoitusjaksojen aikana. Sykeohjatun harjoittelun ideana on ohjelmoida harjoittelua yksilöllisesti autonomisen hermoston toimintaan perustuen. Tämän tutkimuksen tarkoituksena oli vertailla sykeohjatun ja ennalta määrätyn blokkiharjoittelun vaikutuksia kestävyyssuorituskykyyn ja hermolihasjärjestelmän toimintaan. Tutkimus sisälsi kolmen viikon kontrollijakson sekä kahdeksan viikon harjoitusjakson. Tutkittavat olivat 19-37 -vuotiaita kestävyysharjoitelleita miehiä, jotka jaettiin kontrollijakson aikana sykeohjat…

blokkiharjoittelukestävyysharjoitteluaerobinen suorituskykyintervalliharjoitteluVO2max
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Hill Runner's Physiology, Performance and Nutrition: A Descriptive Study.

2021

Objectives: The aim of this descriptive study was to characterise anthropometric variables, aerobic capacity, running performance and energy intake and expenditure of hill runners in free-living conditions, and to investigate the relationship between age, anthropometric variables, aerobic capacity and running performance.Methods: Twenty-eight hill runners participated in this study (17 males and 11 females; aged 18–65 years). Body fat percentage estimate, sum of eight skinfolds (triceps, subscapular, biceps, iliac crest, supraspinale, abdominal, front thigh and medial calf) and maximal oxygen capacity (VO2max) were assessed in a laboratory setting. Participants also completed a timed hill r…

body compositionanthropometrybusiness.industryGeneral MedicineAnthropometryBody fat percentageGas analyzerenergy intake and expenditureIntensity (physics)Animal scienceNegatively associatedSports and Active LivingGV557-1198.995Oxygen CapacityHeart rateMedicinebusinessdietVO2maxAerobic capacitySportsOriginal Researchendurance sportFrontiers in sports and active living
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Brookite, the least known TiO2 photocatalyst, Catalysts

2013

Brookite is the least studied TiO2 photocatalyst due to the difficulties usually encountered in order to obtain it as a pure phase. In this review, a comprehensive survey of the different methods available for preparing brookite powders and films is reported. Attention has been paid both to the most traditional methods, such as hydrothermal processes at high temperatures and pressures, and to environmentally benign syntheses using water soluble compounds and water as the solvent. Papers reporting the photocatalytic activity of pure and brookite-based samples have been reviewed.

brookite-based photocatalystsbrookite filmmixtures of TiO2 phaseTiO2brookite nanostructureSettore CHIM/07 - Fondamenti Chimici Delle Tecnologiebrookite
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