Search results for " Mill."
showing 9 items of 259 documents
The Effect of Mechanocatalytic Pretreatment on the Structure and Depolymerization of Willow
2020
In this study, the effect of a mechanocatalytic pretreatment on the structure of willow and sugar release from pretreated willow was explored. In the mechanocatalytic approach, the pretreatment consists of solvent-free impregnation with sulfuric acid and a mechanical treatment with ball milling. Willow sawdust and pretreated samples were analyzed with field emission scanning electron microscope and X-ray diffraction. The products in the sugar solution were determined as the total reducing sugars with the 3,5-dinitrosalicylic acid method and monosaccharides with capillary electrophoresis. According to the results, milling increased the sugar production, depending on the sulfuric acid load. T…
Ecologia e selvicoltura dei boschi artificiali di conifere dei Monti Sicani (Sicilia)
2009
I rimboschimenti realizzati in Sicilia dopo il 1950 hanno contribuito notevolmente all’aumento della superficie forestale nell’Isola. In questo lavoro sono descritte e analizzate le caratteristiche ecologiche e selvicolturali dei rimboschimenti localizzati all’interno dei principali siti della Rete Natura 2000 dei Monti Sicani, con l’obiettivo di formulare idonee linee guida di gestione forestale sostenibile finalizzata ad aumentare la loro stabilità ecologico-strutturale e a favorire così i processi di rinaturalizzazione, diffusi spontaneamente in molte aree. L’indagine conoscitiva è stata condotta in ambiente GIS attraverso l’overlay tra la distribuzione dei rimboschimenti, classificati a…
The use of industrial waste materials for the simultaneous removal of ammonium nitrogen and phosphate from the anaerobic digestion reject water
2020
The European Union’s circular economy strategy aims to increase the recycling and re-use of products and waste materials. According to the strategy, the use of industry waste materials and side flows is required to be more effective. In this research, a chemical precipitation method to simultaneously remove ammonium and phosphate from the reject water of anaerobic digestion plant using calcined paper mill sludge and fly ash as a precipitant, was tested. Paper mill sludge is a waste material formed in the paper-making process, and fly ash is another waste material formed in the power plant. Objective of this research was to test whether these industrial waste streams could be used as low cos…
Last millennium northern hemisphere summer temperatures from tree rings: Part I: The long term context
2016
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала. Large-scale millennial length Northern Hemisphere (NH) temperature reconstructions have been progressively improved over the last 20 years as new datasets have been developed. This paper, and its companion (Part II, Anchukaitis et al. in prep), details the latest tree-ring (TR) based NH land air temperature reconstruction from a temporal and spatial perspective. This work is the first product of a consortium called N-TREND (Northern Hemisphere Tree-Ring Network Development) which brings together dendroclimatologists to identify a collective strategy for improving large-scale summer temperature reconstructions…
Quantum fluctuations in superconducting nanostructures
2014
Modern nanofabrication technology enableTfabrication of very narrow quasi-1-dimensional superconducting nanowires demonstrating finite resistivity within the range of experimentally obtainable temperatures. The observations were reported in ∼10 nm nanowires of certain superconducting materials. The effect has been associated with quantum phase slip process - the particular manifestation of quantum fluctuations of the order p arameter. In titanium, the phenomenon can be observed already at dimensions ∼35 nm where the fabrication is well reproducible and the dimensions of samples can be characterized with high accuracy. We have performed systematic study of the size dependence of transport pr…
Value-added bioproducts or renewable energy derived from lignin? : comparative regional economic and environmental impact assessment : case Metsä Gro…
2016
Metsä Group’s next-generation bioproduct mill in Äänekoski will be operational within Q3/2017 and it will have significant regional economic impact on Central Finland. The mill will operate applying principles of circular economy, and thus utilize all possible side streams from pulp production. Lignin is one of the side streams that has huge potential to be refined, as sustainable products and by creating new value added. Conventionally, lignin is combusted with black liquor to generate energy in pulp mills. This thesis compares this conventional situation to refining lignin into biocomposite products made from 100% renewable resources with regard to regional economic and environmental impa…
I mulini ad acqua: dalla conservazione statica alla pratica sistemica
2013
I mulini di Polizzi: dalla conservazione statica alla pratica sistemica. Il sistema tradizionale di molitura con macine azionate dall'energia idraulica, diffuso in tutto il Mediterraneo, è presente molti Comuni della provincia di Palermo, ed è rimasto in uso fino al secondo dopoguerra. Si tratta di strutture produttive a ruota orizzontale; In genere diversi mulini sorgono in successione lungo lo stesso corso d'acqua, costituendo così un sistema. Sono queste le caratteristiche peculiari della “flomaria molendinorum” nel territorio di Polizzi Generosa: una vera e propria scalinata di impianti idraulici ancora visibili nel paesaggio odierno, concentrazioni testimoniate fin dal XII secolo. All'…
Malus Mill. drawings
1980
Profesora Voldemāra Langenfelda (1923–2007) sagatavots mācību materiāls par ābeļu ģinti (Mallus Mill.). Zīmējusi viņa sieva Astrīda Langenfelde. Komplektā trūkst 1. kartītes. Materiāls glabājās Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekcijā.
Pētera Šmita polemika par savu rakstu atsaucēm Latvijas tā laika presē
1911
P. Šmita polemika par savu rakstu atsaucēm Latvijas tā laika presē minot vārdā vairākus literātus, valodniekus u.c. autorus.