Search results for "pilaantuminen"
showing 8 items of 8 documents
Effect of Seasonal Storage on Single-Stem Bark Extractives of Norway Spruce (Picea abies)
2021
Increasing the net value of forestry side-streams has both ecological as well as economic benefits for emerging biorefining industries. Spruce bark represents one of the nature’s abundant sources of valuable extractives. In this study, the impact of storage on the quality and quantity of Norway spruce (Picea abies) extractives was examined as a function of storage time, environmental conditions and season (i.e., winter or summer). The bark from stored spruce saw logs was extracted with an accelerated solvent extractor (ASE) at 120 °C with hexane and water. The produced extracts were analysed qualitatively and quantitatively by gas chromatography with a flame ionisation detector (GC-FID) and…
Current Transport Mechanism for Heavy-Ion Degraded SiC MOSFETs
2019
IEEE Transactions on Nuclear Science, 66 (7)
The effect of thermal drying on the contents of condensed tannins and stilbenes in Norway spruce (Picea abies [L.] Karst.) sawmill bark
2021
Norway spruce (Picea abies (L.) Karst.) bark contains marked amounts of polyphenolic compounds. Condensed tannins (CTs) and stilbenes show commercial potential as antioxidants, antimicrobials, preservatives in food and cosmetic applications, technochemical products, and pharmaceuticals. Storing of bark before the conversion process leads to substantial losses of extractives compounds. In the present study, the potential of thermal drying for maintaining extractives content was assessed based on an experiment in which bark samples were dried in convection kilns at 40, 50, 60, and 70 °C temperatures. The development of CTs and stilbene contents and CT degradation were followed for 28–34 h. CT…
Echovirus 1 internalization negatively regulates epidermal growth factor receptor downregulation
2017
We have demonstrated previously that the human picornavirus Echovirus 1 (EV1) triggers an infectious internalization pathway that follows closely, but seems to stay separate, from the epidermal growth factor receptor (EGFR) pathway triggered by epidermal growth factor (EGF). Here, we confirmed by using live and confocal microscopy that EGFR and EV1 vesicles are following intimately each other but are distinct entities with different degradation kinetics. We show here that despite being sorted to different pathways and located in distinct endosomes, EV1 inhibits EGFR downregulation. Simultaneous treatment with EV1 and EGF led to an accumulation of EGFR in cytoplasmic endosomes, which was evi…
Kloorifenoleilla pilaantuneen maan kompostointi : biotestien käyttö kompostoinnin onnistumisen seurannassa
2008
Pilaantuneen maaperän kohdekohtaisen riskinarvioinnin käytännön toteutus
2007
Behaviour of Extractives in Norway Spruce (Picea abies) Bark during Pile Storage
2022
The current practices regarding the procurement chain of forest industry sidestreams, such as conifer bark, do not always lead to optimal conditions for preserving individual chemical compounds. This study investigates the standard way of storing bark in large piles in an open area. We mainly focus on the degradation of the most essential hydrophilic and hydrophobic extractives and carbohydrates. First, two large 450 m3 piles of bark from Norway spruce (Picea abies) were formed, one of which was covered with snow. The degradation of the bark extractives was monitored for 24 weeks. Samples were taken from the middle, side and top of the pile. Each sample was extracted at 120 °C with both n-h…
Veden muuttuvat merkitykset : vesistöhavaintojen ja kansalaisosallistumisen suhde Saarijärven reitillä
2017
Tässä tutkielmassa olen kiinnostunut selvittämään vesistöissä havaittujen negatiivisten muutosten ja kansalaisosallistumisen välisiä mahdollisia yhteyksiä. Tutkimus on sekundaarianalyysi Saarijärven reittivesistön varren kunnissa tehdystä kyselytutkimuksesta. Reitin vesistöt ovat laadultaan huonohkossa tilassa lähiseudun turvetuotannon, maatalouden ja metsäteollisuuden johdosta. Primaarianalyysissä selvisi, että paikalliset kokevat lähivesistöjen heikolla tilalla olevan negatiivisia sosiaalisia vaikutuksia. Vedellä on lukuisia merkityksiä yhteiskunnassa ihmisoikeudesta kaupalliseksi resurssiksi ja kaikkea siltä väliltä. Vesi on sosiaalinen elementti, joka muokkaa yhteiskunnan rakenteita ja …