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wyszukanych pozycji: 3
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Der kleine Fischer Tong : Bilderbuch
ISBN: 9783895652844 / Niemiecki / Twarda / 2014 / 48 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych (Bez gwarancji dostawy przed świętami) |
cena:
80,70 zł |
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A Study of Softwood Torrefaction and Densification
ISBN: 9783659203312 / Angielski / Miękka / 2012 / 296 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych (Bez gwarancji dostawy przed świętami) Canada has become a major producer and exporter of wood pellets in the world. But the low water resistivity and the high transportation cost impede the market development. Torrefaction may provide a solution. The present study developed the torrefaction kinetics, studied the torrefaction reaction conditions in two bench-scale reactors, and identified the suitable conditions for making durable torrefied pellets in a press machine. The weight loss of softwood significantly depended on the torrefaction temperature, the residence time, the particle size, and the oxygen concentration in the...
Canada has become a major producer and exporter of wood pellets in the world. But the low water resistivity and the high transportation cost impede th...
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cena:
354,20 zł |
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Prediction and Evaluation of Hardened Concrete Strength
ISBN: 9789819682362 / Angielski / Twarda / 2025 / 102 str. Termin realizacji zamówienia: ok. 22 dni roboczych (Bez gwarancji dostawy przed świętami) This open access book monitors the development of the temperature field within concrete structures and, based on the Arrhenius equation, constructs F-P maturity equations applicable to different temperature ranges. It investigates the impact of hydration rate on the strength prediction method of the maturity equation. Furthermore, the book employs artificial neural network theory to improve the accuracy of early concrete strength predictions, optimizing the neural network model to develop a more precise and widely applicable prediction model. An intelligent program is developed using... This open access book monitors the development of the temperature field within concrete structures and, based on the Arrhenius equation, constructs... |
cena:
201,72 zł |
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