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排序方式: 共有260条查询结果,搜索用时 15 毫秒
1.
This study tried to investigate, by the power comsumption technique, the influence of the powder's and solvent's properties on wet granulation.
It could be shown that the required amount of granulation liquid decreases when the particle size of the powder to be granulated increases. This relationship is however only true when the particle size distribution of the powder to be granulated is rather narrow.
Powders having the same solubility in different solvents require the same optimal liquid quantity for granulation, but the properties of resulting granules depend on surface tension and wetting properties of the solvent.
When the powder to be granulated contains crystallisation water, the temperature rising in the mixer can be sufficient to liberate this water, which must be taken into account in the optimal granulation liquid requirement.
The effect of a macromolecular binder (PVP, HPMC) has also been studied: the optimal liquid quantity required changes with the kind of binder used and the manufacturing process (binder used in solution or added as dry powder).
It was also shown that in the case of lactose, the optimal quantity of PVP or HPMC can be determined from the power consumption records and from the granules friability studies 相似文献
It could be shown that the required amount of granulation liquid decreases when the particle size of the powder to be granulated increases. This relationship is however only true when the particle size distribution of the powder to be granulated is rather narrow.
Powders having the same solubility in different solvents require the same optimal liquid quantity for granulation, but the properties of resulting granules depend on surface tension and wetting properties of the solvent.
When the powder to be granulated contains crystallisation water, the temperature rising in the mixer can be sufficient to liberate this water, which must be taken into account in the optimal granulation liquid requirement.
The effect of a macromolecular binder (PVP, HPMC) has also been studied: the optimal liquid quantity required changes with the kind of binder used and the manufacturing process (binder used in solution or added as dry powder).
It was also shown that in the case of lactose, the optimal quantity of PVP or HPMC can be determined from the power consumption records and from the granules friability studies 相似文献
2.
Multimedia Tools and Applications - In this paper, we propose a new framework for performing accurate and robust camera model identification by fully exploiting demosaicing information in a... 相似文献
3.
Beckel W. Ludorff J. Großfeld Baars Bäurle Brüning Griebel Lars Erlandsen Steinbeck W. Hämmerle Reichard W. Schreiber Jesser Kanitz Hans Hawelka Tobler Kluge Patzsch Schönfeld F. Zacher M. Gordienko G. Stamm Lerche Schloemer Schwaibold O. Windhausen Haevecker Diemair W. Brandt G. Steinhoff K. Höll Schönfeld K. Müller G. Moderow und W. Sutthoff 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1941,81(6):508-576
Ohne Zusammenfassung 相似文献
4.
E. Dinslage Beckel Schwaibold F. Frhr v. Falkenhausen Mohr Griebel Rauen C. I. Kruisheer von Gierke H. Mohler I. Stahn L. Maaskant H. J. Steinbeck Brüning Pawletta W. Schreiber Kanitz Schnetka H. Ketterl Damm G. Stamm W. Ludorff Edmund Baertich H. Ketterl Ketterl Lars Erlandsen Riffart Lars Erlandsen Masling v. Noël Jesser Jahr W. Brandt Schönfeld W. Preiß K. Höll J. J. van Eck W. Wodsak Bomskov C. Pyriki Schönfeld Werner Kluge W. Hämmerle W. Bartels Flury Wrede W. Bartels 《European Food Research and Technology》1938,76(2):160-208
5.
Lazaros Tzounis Titus Gärtner Marco Liebscher Petra Pötschke Manfred Stamm Brigitte Voit Gert Heinrich 《Polymer》2014
The thermoelectric properties of melt-processed nanocomposites consisting of a polycarbonate (PC) thermoplastic matrix filled with commercially available carboxyl (–COOH) functionalized multi-walled carbon nanotubes (MWCNTs) were evaluated. MWCNTs carrying carboxylic acid moieties (MWCNT-COOH) were used due the p-doping that the carboxyl groups facilitate, via electron withdrawing from the electron-rich π-conjugated system. Preliminary thermogravimetric analysis (TGA) of MWCNT-COOH revealed that the melt-mixing was limited at low temperatures due to thermal decomposition of the MWCNT functional groups. Therefore, PC was mixed with 2.5 wt% MWCNT-COOH (PC/MWCNT-COOH) at 240 °C and 270 °C. In order to reduce the polymer melt viscosity, a cyclic butylene terephthalate (CBT) oligomer was utilized as an additive, improving additionally the electrical conductivity of the nanocomposites. The melt rheological characterization of neat PC and PC/CBT blends demonstrated a significant decrease of the complex viscosity by the addition of CBT (10 wt%). Optical and transmission electron microscopy (OM, TEM) depicted an improved MWCNT dispersion in the PC/CBT polymer blend. The electrical conductivity was remarkably higher for the PC/MWCNT-COOH/CBT composites compared to the PC/MWCNT-COOH ones. Namely, the PC/MWCNT-COOH/CBT processed at 270 °C exhibited the best values with electrical conductivity; σ = 0.05 S/m, Seebeck coefficient; S = 13.55 μV/K, power factor; PF = 7.60 × 10−6μW/m K−2, and thermoelectric figure of merit; ZT = 7.94 × 10−9. The PC/MWCNT-COOH/CBT nanocomposites could be ideal candidates for large-scale thermal energy harvesting, even though the presently obtained ZT values are still too low for commercial applications. 相似文献
6.
7.
Xiuqin Zhang Konrad Schneider Guoming Liu Jianhong Chen Karsten Brüning Dujin Wang Manfred Stamm 《Polymer》2012,53(2):648-656
Cavitation and superstructure evolution of polymers during stretching play crucial roles to influence the mechanical properties of materials. In this study, we investigated deformation-mediated superstructures and cavitation of poly (l-lactide) (PLA) as well as their dependence on stretching temperatures by in-situ small-angle X-ray (SAXS) analysis coupled with mechanical testing. It is found that the cavitation and crystalline deformation are strongly influenced by stretching stress during deformation, which significantly depends on the stretching temperature. At lower stretching temperature (70 °C), the cavitation is initiated before the yielding and then stimulates the crystallite shearing. At higher stretching temperature (90 °C), however, the crystallites shear firstly and then crystalline deformation promotes the formation of cavities orientated along the stretching direction. High stretching temperature benefits the formation of relatively perfect crystals with high orientation. The results provide the basic knowledge of how to adjust the mechanical properties of polymer materials by controlling their superstructure in the deformation process. 相似文献
8.
Kanitz O. Windhausen Schwaibold Riffart W. Schreiber Jesser J. J. van Eck Diemair W. Ludorff J. Ph. Bruno Roßmann H. J. Steinbeck Wodsak H. Damm G. Steinhoff L. W. Jirak Fr. Bartschat H. Ketterl J. Großfeld W. Bartels G. Stamm Reichard R. Grau 《European Food Research and Technology》1937,73(5):448-504
9.
Bames H. J. Steinbeck W. Ludorff G. Mall Schormüller J. Ph. Br. Roßmann A. Lendle Schwaibold Albers W. Schreiber Rudolf Abderhalden Frey-Wyssling Hans Hawelka Bäurle W. Sutthoff Carls Griebel Kanitz Rietschel Griebel G. Stamm Körner-Hennig W. Leithe W. Hämmerle G. Steinhoff W. Wodsak Brüning Estler H. Hofmann Weber Mayser E. E. Bauke O. Windhausen Lars Erlandsen Kluge Kuckuck Haevecker Haevecker E. Dinslage I. Stahn Reichard K. Müller Hanak Kluge K. Höll Fr. Bartschat 《European Food Research and Technology》1940,79(3):272-335
10.
Schwaibold Schormüller Beckel W. Sutthoff Lars Erlandsen v. Skramlik W. Schreiber Kanitz Bierotte M. Steiner W. Wodsak G. Steinhoff H. J. Steinbeck Frey-Wyssling M. Gordienko K. Dirr Pawletta Stelzer W. Wodsak W. Bartels Hoepke G. Stamm Brüning W. Hämmerle Schnetka K. Felix H. Schülke Kluge Krzywanek W. Brandt Gertraude Körner-Hennig K. J. Demeter Damm J. Ph. Bruno Roßmann W. Karlowa H. Ketterl L. W. Jirak W. Preiß Diemair W. Ludorff Jahr Griebel J. J. van Eck W. Preiß C. Pyriki K. Müller Jesser K. Boresch Fr. Bartschat 《European Food Research and Technology》1939,77(3):290-336