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21.
Dr. Kristin Schumann Dr. Alfons Brandt Dr. Baldur Unger Prof. Dr. Franziska Scheffler 《化学,工程师,技术》2011,83(12):2237-2243
Zeolite molecular sieves belong to the most important adsorbents. For dynamic, technical adsorption processes the use of shaped bodies is required. In conventional molecular sieves usually clay type minerals are used as binder. In this paper novel binderless zeolite molecular sieves and their advantages in comparison to binder containing molecular sieves are shown. 相似文献
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A. Schloemer 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1943,86(1-2):1-18
Ohne Zusammenfassung 相似文献
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Secondary nucleation in industrial crystallizers depends on both supersaturation and mechanical stress by stirring. Most models which consider mechanical stress assume that nucleation is proprotional to the energy transferred to the crystals during collisions. This is not based on any physical relationship and, in addition, the models do not satisfactorily reproduce the experimental results. Own model, based on the theory of Hertz/Huber, which accounts for the stress of the crystals caused by impact, gave better results. This well-known and proven theory allows the calculation of the volume abraded during collisions between crystals and stirrer or walls. Introducing a nucleate efficienncy, the effect of mechanical stress on the rate of secondary nucleation, due to stirring intensity and crystallizer size, can be determined. 相似文献
26.
Lisette Mol Emiel Krahmer Alfons Maes Marc Swerts 《Journal of Computer-Mediated Communication》2011,17(1):77-100
Speakers are argued to adapt their language production to their addressee's needs. For instance, speakers produce fewer and smaller hand gestures when interlocutors cannot see each other. Yet is this because speakers know their addressee cannot see them, or because they themselves do not see their addressee? By means of computer‐mediated communication we manipulated these factors independently. We found that speakers took into account what their addressee saw. They produced more and larger gestures when they knew the addressee could see them. Seeing the addressee increased gesture production only if speakers could readily interpret the addressee's eye gaze, which is not usually the case in mediated interaction. Adding this affordance resulted in gesturing being similar in mediated and unmediated communication. 相似文献
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This article describes the role of hydrogen trapping in steel. Trapping increases the solubility of hydrogen and decreases
the diffusivity. Traps are characterized by their nature, i.e., reversible or irreversible, saturable or unsaturable. A dislocation core is a saturable, reversible trap, while voids and
crack are unsaturable, reversible traps. A trap model based on saturable, reversible traps is developed, which is slightly
different from the trap model of McNabb and Foster. In equilibrium, the trap model corresponds to Oriani’s trap model. Kumnick
and Johnson found experimentally that the trap density increases as the plastic strain increases. Using their trap data, it
is shown that equilibrium between hydrogen in lattice sites and trap sites can be assumed when strain rates are used as in
standard tensile tests. 相似文献
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Hahn Griebel W. Schreiber Carls J. Großfeld Steinbeck Beckel Schwaibold Lehnartz Meumann Schormüller Jesser R. Strohecker Lehnartz Diemair R. Grau Lars Erlandson Patzsch Reichard Ph. Bruno Roßmann Brüning Karl Sauer Willy Lindner Kanitz O. Windhausen Schloemer Amelung M. Steiner R. Mancke K. Höll Goreczky E. Tornow Zacher Kleinhans und Bäurle 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1943,85(1):70-112
Ohne Zusammenfassung 相似文献