affordancebased approach to architectural theory design and practice

1、窗体顶端Slow-mode gas/liquid-induced periodic hydrodynamics in trickling packed beds derived from direct measurement of cross-sectional distributed local capacitances  Original Research ArticleChemical Engineering and Processing: Process Intensification, Volume 49, Issue 10, October 2010, Page

2、s 1107-1121Markus Schubert, Holger Kryk, Uwe Hampel Close preview  |   Related articles  |  Related reference work articles     AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractHydrodynamics of a periodica

3、lly operated trickling packed bed was studied with a high-speed wire-mesh sensor technique based on direct measurement of cross-sectional distributed local capacitances. Liquid cycles in the alumina packing were generated by periodic induction of gas and/or liquid phase in distinctive slow-mode. Hyd

4、rodynamics were characterized with respect to liquid saturation and liquid saturation distribution varying period length, split and time-averaged superficial gas and liquid velocities. The sensors technique allows direct access to local phenomena during liquid pulse breakthrough, to distribution pat

5、terns and their reproducibility at different cycle positions that were studied based on transient liquid saturation distribution data of different periodicity variables. Due to simultaneous measurement at four different axial reactor positions, pulse attenuation along the reactor and pulse velocity

6、could be analyzed. Furthermore, hydrodynamics of different modes of gas-induced periodic cycling, e.g. gas cycling only, asynchronous and synchronous cycling of gas and liquid flow rate and alternating gasliquid cycling, were studied.Article Outline1. Introduction2. Experimental setup and procedures

7、 2.1. Trickle bed reactor setup2.2. Wire-mesh sensor2.3. Data calibration and analysis method2.4. Comparison with electrical capacitance tomography2.5. Experimental procedure3. Results and discussion 3.1. Steady-state reference data3.2. Periodic operation with liquid modulation 3.2.1. Liquid saturat

8、ion3.2.2. Liquid maldistribution3.2.3. Pulse velocity3.2.4. Local liquid saturation phenomena3.3. Periodic operation with gas modulation4. ConclusionsAppendix A. NomenclatureReferencesPurchase$ 31.50434Towards further internal heat integration in design of reactive distillation columnsPart IV: Appli

9、cation to a high-purity ethylene glycol reactive distillation column  Original Research ArticleChemical Engineering Science, Volume 64, Issue 15, 1 August 2009, Pages 3498-3509Fanghong Zhu, Kejin Huang, Shaofeng Wang, Lan Shan, Qunxiong Zhu Close preview  |   Relat

10、ed articles  |  Related reference work articles     AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractIn the first three papers of this series, it has been shown that strengthening internal heat integration within a reactive distil

11、lation column involving reactions with high thermal effect is really effective for the reduction of utility consumption and capital investment besides the improvement in process dynamics and operation. One important issue that remains unstudied so far is the influences of reaction selectivity upon t

12、he reinforcement of internal heat integration, since the reaction operation is often accompanied by side-reactions and the maintenance of a high selectivity is extremely necessary in process synthesis and design. A reactive distillation column synthesizing high-purity ethylene glycol through the hyd

13、ration of ethylene oxide is chosen and studied in this work. Because of the unfavorable physicochemical properties of the reacting mixture separated (e.g., the fairly large volatility between the reactants and the existence of a consecutive side-reaction), the process represents a challenging proble

14、m for the reinforcement of internal heat integration. Intensive comparison is conducted between the process designs with and without the consideration of further internal heat integration between the reaction operation and the separation operation involved, and it has been found that seeking further

15、 internal heat integration still leads to a substantial reduction of energy requirement, in addition to a further abatement in capital investment. Moreover, a favorable effect is again observed upon the process dynamics and operability. These striking outcomes manifest evidently that seeking further

16、 internal heat integration should be considered in process synthesis and design irrespective of what a reaction selectivity has been assigned.Article Outline1. Introduction2. Seeking further internal heat integration in a reactive distillation column involving reactions with high thermal effect3. Pr

17、ocess description4. Process synthesis and design without the consideration of further internal heat integration5. Process synthesis and design with the consideration of further internal heat integration6. Open-loop process dynamics7. Operability evaluation8. Discussions9. ConclusionsNotationAcknowle

18、dgementsReferencesPurchase$ 41.95435Design of the autonomous micro helicopter muFly  Original Research ArticleMechatronics, In Press, Corrected Proof, Available online 20 January 2011Christian Bermes, Samir Bouabdallah, Dario Schafroth, Roland Siegwart Close preview  | 

19、  Related articles  |  Related reference work articles     AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractIn this paper, the design of two prototypes of the autonomous micro helicopter muFly is introduced. These prototypes

20、have been built and flown in untethered test flights. The rotor configuration and steering principle selection of the prototypes are discussed according to the specifications, and the selection of a coaxial configuration with a swash plate steering of the lower rotor is justified based on dynamic si

21、mulation results. The two prototype designs are shown and discussed with special attention paid to their respective system integration issues, which are solved. Finally, the prototypes are compared and conclusions for future designs of autonomous micro helicopters are drawn.Article Outline1. Introdu

22、ction2. State of the art3. Rotor configuration selection4. Steering principle selection5. Helicopter prototypes 5.1. First prototype5.2. Second prototype5.3. Prototype comparison6. ConclusionAcknowledgementsReferencesPurchase$ 31.50Research highlights The coaxial rotor configuration suppresses undes

23、ired rotor cross-coupling. Swash plate steering leads to larger output amplitudes. A modular design easily violates the total mass restriction. A fully integrated design is the only way to have the required hardware onboard.436Narratives of the future: Suspending disbelief in forest-sector scenarios

24、  Original Research ArticleFutures, Volume 42, Issue 10, December 2010, Pages 1156-1165Cristiana M. Frittaion, Peter N. Duinker, Jill L. Grant Close preview  |   Related articles  |  Related reference work articles     Abstra

25、ctAbstract | ReferencesReferences AbstractScenario analysis considers highly uncertain future conditions. The method involves developing and analyzing plausible narratives of the future and evaluating them for a range of implications. The power of scenarios lies in creating and considering compellin

26、g stories about the future. Thus, narrative, defined as an account of a series of events, is central to the process and plays a pivotal role in engaging participants in a scenario analysis exercise. While a good scenario story can engage individuals and influence their suspension of disbelief, we kn

27、ow little about how participants actually respond to the scenarios so they can, and will, suspend disbelief in scenario outcomes. We explored the role of narrative in suspension of disbelief in a scenario-based study of the long-term future of Canada's forests and forest sector. We discovered th

28、at specific aspects of the scenario narratives themselves influenced participants suspension of disbelief. While interacting with the scenario narratives, participants actively worked to suspend disbelief by creating new narratives or accessing other existing ones, and by projecting themselves into

29、the scenarios as characters in the stories. Our results may help scenario writers, practitioners, and researchers understand what, in one project, cued people's abilities to suspend disbelief and engage productively in discussions about possible futures.Article Outline1. Introduction 1.1. Scenar

30、io analysis1.2. Narrative and the suspension of disbelief1.3. The case study: the Forest Futures Project2. Study methods3. Results 3.1. The scenario narratives 3.1.1. Participants as characters3.1.2. Internal storiesor, participants as authors3.1.3. Existing narratives3.2. The power of story4. Discu

31、ssion5. Conclusion 5.1. Future researchFunding sourcesAcknowledgementsReferencesPurchase$ 41.95437Fundamental challenges and opportunities for preparative supercritical fluid chromatography  Review ArticleJournal of Chromatography A, Volume 1218, Issue 8, 25 February 2011, Pages 1037-1114G

32、eorges Guiochon, Abhijit Tarafder Close preview  |   Related articles  |  Related reference work articles     LOADING.Purchase$ 41.95438Dielectric relaxation dynamics in a dual-frequency nematic liquid crystal doped with C.I. Acid Red

33、2  Original Research ArticleDyes and Pigments, Volume 88, Issue 1, January 2011, Pages 1-6Chen-Yu Tang, Sheng-Miao Huang, Wei Lee Show preview  |   Related articles  |  Related reference work articles     Purchase$ 41.95439A

34、review of airship structural research and development  Review ArticleProgress in Aerospace Sciences, Volume 45, Issues 4-5, May-July 2009, Pages 83-96Lin Liao, Igor Pasternak Show preview  |   Related articles  |  Related reference work articles

35、     Purchase$ 31.50440Design rules for suspending concentrated mixtures of solids in stirred tanks  Original Research ArticleChemical Engineering Research and Design, In Press, Corrected Proof, Available online 26 January 2011Inci Ayranci, Suzanne M. Kresta Show p

36、review  |   Related articles  |  Related reference work articles     Purchase$ 31.50Graphical abstract441A current and future state of art development of hybrid energy system using wind and PV-solar: A review  Review ArticleRenewa

37、ble and Sustainable Energy Reviews, Volume 13, Issue 8, October 2009, Pages 2096-2103Pragya Nema, R.K. Nema, Saroj Rangnekar Show preview  |   Related articles  |  Related reference work articles     Purchase$ 37.95442Application of a

38、scenario-based modeling system to evaluate the air quality impacts of future growth  Original Research ArticleAtmospheric Environment, Volume 43, Issue 5, February 2009, Pages 1021-1028Jülide Kahyaolu-Korain, Scott D. Bassett, David A. Mouat, Alan W. Gertler Show preview 

39、60;|   Related articles  |  Related reference work articles     Purchase$ 35.95443Excess molar volume and derived thermodynamic properties of binary mixtures of 2-methyl-1-butanol and 2-ethyl-1-butanol + different ethers at the temperature

40、range of 293.15 to 313.15 K  Original Research ArticleJournal of Molecular Liquids, Volume 146, Issues 1-2, 31 May 2009, Pages 29-34F. Kermanpour, H. Jahani, H. Iloukhani Show preview  |   Related articles  |  Related reference work article

41、s     Purchase$ 41.95444Liquid-metal-ion source development for space propulsion at ARC  Original Research ArticleUltramicroscopy, Volume 109, Issue 5, April 2009, Pages 442-446M. Tajmar, C. Scharlemann, A. Genovese, N. Buldrini, W. Steiger, I. Vasiljevich Show pre

42、view  |   Related articles  |  Related reference work articles     Purchase$ 31.50445Recent trends and future prospects of socio-spatial differentiation in urban regions of Central and Eastern Europe: A lull before the storm?  Ori

43、ginal Research ArticleCities, Volume 26, Issue 5, October 2009, Pages 233-244Isolde Brade, Günter Herfert, Karin Wiest Show preview  |   Related articles  |  Related reference work articles     Purchase$ 19.95446Safety and design

44、concepts of the 400 MWth-class EFIT accelerator driven transmuter and considerations for further developments  Original Research ArticleEnergy Conversion and Management, Volume 51, Issue 9, September 2010, Pages 1764-1773W. Maschek, X.-N. Chen, P. Liu, A. Rineiski, M. Flad, G. Rimpaul

45、t Show preview  |   Related articles  |  Related reference work articles     Purchase$ 37.95447Numerical modeling of three-dimensional two-phase gasliquid flow in the flow field plate of a PEM electrolysis cell  Original Rese

46、arch ArticleInternational Journal of Hydrogen Energy, Volume 35, Issue 8, April 2010, Pages 3183-3197Jianhu Nie, Yitung Chen Show preview  |   Related articles  |  Related reference work articles     Purchase$ 31.50448A review of mix d

47、esign and evaluation research for permeable friction course mixtures  Review ArticleConstruction and Building Materials, Volume 25, Issue 3, March 2011, Pages 1159-1166Allex E. Alvarez, Amy Epps Martin, Cindy Estakhri Show preview  |   Related articles  |

48、  Related reference work articles     Purchase$ 41.95Research highlights Mix design of PFC mixes requires improvement to further promote their use. The paper presents a literature review focused on design and evaluation of PFC mixes. Optimization of the balance between mixture functionality and durability is required. Replacement of the indirect assessment of mixture fun