Search results for "etanoli"

showing 4 items of 14 documents

Optical Monitoring of Microplastics Filtrated from Wastewater Sludge and Suspended in Ethanol.

2021

The abundance of microplastics (MPs) in the atmosphere, on land, and especially in water bodies is well acknowledged. In this study, we establish an optical method based on three different techniques, namely, specular reflection to probe the medium, transmission spectroscopy measurements for the detection and identification, and a speckle pattern for monitoring the sedimentation of MPs filtrated from wastewater sludge and suspended in ethanol. We used first Raman measurements to estimate the presence and types of different MPs in wastewater sludge samples. We also used microscopy to identify the shapes of the main MPs. This allowed us to create a teaching set of samples to be characterized …

spectroscopylieteoptical monitoringmicroplasticsetanolispektroskopiasedimentointimonitorointisedimentitjätevesiwater qualityArticlejätevesilietelcsh:QD241-441mikromuovitlcsh:Organic chemistryplasticmeasuring methodshavainnointitransmittancesewageseurantamutapolymeeritwastewaterpolymerssewage sludgemittaussedimentstrackingvedenlaatuoptical methodopticsmittausmenetelmätmikroroskatoptiikkasludgeoptiset laitteetilmaisimetmuoviRaman spectroscopysedimentaatiomeasurementethanolliejusedimentationlaser speckle patternjätemuoviPolymers
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Does corn market uncertainty impact the US ethanol prices?

2018

The growing interest in biofuel as a green energy source has intensified the linkages between corn and ethanol markets, especially in the United States that represents the largest producing and exporting country for ethanol in the world. In this study, we examine the effect of corn market uncertainty on the price changes of US ethanol applying a set of GARCH-jump models. We find that the US ethanol price changes react positively to the corn market volatility shocks after controlling for the effect of oil price uncertainty. In addition, we document that the impact of corn price volatility on the US ethanol prices appears to be asymmetric. Specifically, only the positive corn market volatilit…

ta520maissiNaturgeografietanoliNatural resource economics020209 energyoil price volatility02 engineering and technologyöljyvolatility shockshintakehitysvolatiliteetti0202 electrical engineering electronic engineering information engineeringEconomicsbiopolttoaineetWaste Management and Disposalta512corn price uncertaintyhealth care economics and organizationsGARCH–jump modelRenewable Energy Sustainability and the EnvironmentMarket uncertaintybusiness.industryasymmetry; corn price uncertainty; GARCH-jump model; oil price volatility; US ethanol market; volatility shocksfood and beveragesForestrybiofuelsRenewable energyPhysical GeographyBiofuelasymmetriahinnatbusinessUS ethanol marketAgronomy and Crop ScienceasymmetryGlobal Change Biology Bioenergy
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Kuusen pihkan etanoliuuton optimointi

2018

Kuusessa on muutakin hyödynnettävää kuin paperin ja kartongin valmistukseen tarvittava raaka-aine. Mielenkiinto on kohdistunut etenkin puun sisältämiin yhdisteisiin, joilla on havaittu olevan suotuisia terveydellisiä vaikutuksia. Tällainen on kuusen pihka, joka on useamman yhdisteen seos. Kuusen eri osien sisältämien yhdisteiden tutkimus on yhä ajankohtaisempaa. Esimerkiksi niin kuusesta kuin männystä saatavia antibiootteja tutkitaan Itä-Suomen yliopistossa. Repolar Pharmaceuticals Oy perustettiin vuonna 2006 pihkavalmisteiden tuotannon aloittamiseksi. Idea saatiin kotitekoisesta pihkasalvasta, jota yleisesti käytettiin Lapissa haavojen hoitoon. Repolar Pharmaceuticalsin tilaaman työn aihee…

uutteetterpeenituuttoetanolipihkafenolit
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TNT:n ja RDX:n määrittäminen HPLC:lla ja menetelmän validointi

2009

uuttovalidointivesiHPLCkromatografiapuolustusvoimatmetanoli
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