Academic literature on the topic 'Thiele modulus'
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Journal articles on the topic "Thiele modulus"
Kennedy, K. J., and R. L. Droste. "Diffusional limitations of anaerobic biofilms." Canadian Journal of Civil Engineering 14, no. 5 (October 1, 1987): 631–37. http://dx.doi.org/10.1139/l87-093.
Full textHartmann, Martin, Albert Gonche Machoke, and Wilhelm Schwieger. "Catalytic test reactions for the evaluation of hierarchical zeolites." Chemical Society Reviews 45, no. 12 (2016): 3313–30. http://dx.doi.org/10.1039/c5cs00935a.
Full textMarkoš, Jozef, and Alena Brunovská. "Optimal catalyst activity distribution in fixed-bed reactor with catalyst deactivation." Collection of Czechoslovak Chemical Communications 54, no. 2 (1989): 375–87. http://dx.doi.org/10.1135/cccc19890375.
Full textZhokh, Alexey, and Peter Strizhak. "Thiele modulus having regard to the anomalous diffusion in a catalyst pellet." Chaos, Solitons & Fractals 109 (April 2018): 58–63. http://dx.doi.org/10.1016/j.chaos.2018.02.016.
Full textSharma, Kritika, Shrihari Sankarasubramanian, Javier Parrondo, and Vijay Ramani. "Electrochemical implications of modulating the solvation shell around redox active organic species in aqueous organic redox flow batteries." Proceedings of the National Academy of Sciences 118, no. 34 (August 20, 2021): e2105889118. http://dx.doi.org/10.1073/pnas.2105889118.
Full textZeynali, Mohammad Ebrahim, and S. Hakim. "Diffusion Processes Affecting the Performance of Heterogeneous Catalysts: Part 1." Defect and Diffusion Forum 319-320 (October 2011): 107–15. http://dx.doi.org/10.4028/www.scientific.net/ddf.319-320.107.
Full textUshaRani, Ramu, Lakshmanan Rajendran, and Marwan Abukhaled. "Approximations for the Concentration and Effectiveness Factor in Porous Catalysts of Arbitrary Shape: Taylor Series and Akbari-Ganji’s Methods." Mathematical Modelling of Engineering Problems 8, no. 4 (August 31, 2021): 527–37. http://dx.doi.org/10.18280/mmep.080405.
Full textDriessen, Rick T., Sascha R. A. Kersten, and Derk W. F. Brilman. "A Thiele Modulus Approach for Nonequilibrium Adsorption Processes and Its Application to CO2 Capture." Industrial & Engineering Chemistry Research 59, no. 15 (January 17, 2020): 6874–85. http://dx.doi.org/10.1021/acs.iecr.9b05503.
Full textSharratt, P. N., and R. Mann. "Some observations on the variation of tortuosity with Thiele modulus and pore size distribution." Chemical Engineering Science 42, no. 7 (1987): 1565–76. http://dx.doi.org/10.1016/0009-2509(87)80161-6.
Full textYang, Wei, Schalk Cloete, John Morud, and Shahriar Amini. "An Effective Reaction Rate Model for Gas-Solid Reactions with High Intra-Particle Diffusion Resistance." International Journal of Chemical Reactor Engineering 14, no. 1 (February 1, 2016): 331–42. http://dx.doi.org/10.1515/ijcre-2015-0127.
Full textDissertations / Theses on the topic "Thiele modulus"
Morgado, Prates Ana Rita. "Hollow Beta zeolites : synthesis and impact of the hollow morphology on diffusion and catalysis." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1155/document.
Full textHollow zeolite single crystals have received particular interest in catalysis. The presence of a large cavity in these model zeolites enables the study of diffusional limitation in Catalysis. The cavity also enables the encapsulation of metal nanoparticles. However, their synthesis requires specific structural characteristics and it has been limited for long to zeolites with the MFI structure. The objective of this PhD work was to investigate the synthesis of hollow Beta zeolites (*BEA framework type) and study the impact of the hollow morphology on molecular diffusion and catalysis. Two different strategies have been envisaged: a dissolution/recrystallization approach using CIT-6, a zincosilicate with the same *BEA topology and a selective desilication route. Pt nanoparticles encapsulated in hollow crystals obtained from CIT-6 showed remarkable size-selectivity in the hydrogenation of aromatics. The effect of the hollow morphology in molecular diffusion was studied using the ZLC technique; the characteristic diffusion time of the hollow morphology was reduced by 30-83% compared to the corresponding bulk zeolite. Despite that, the hollow structure had no influence on the catalytic activities for the hydroisomerization of n-C16 and for the cracking of cyclohexane. The presence/absence of diffusional limitation is discussed
Godongwana, Buntu. "Effect of nutrient momentum and mass transport on membrane gradostat reactor efficiency." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2149.
Full textSince the first uses of hollow-fiber membrane bioreactors (MBR’s) to immobilize whole cells were reported in the early 1970’s, this technology has been used in as wide ranging applications as enzyme production to bone tissue engineering. The potential of these devices in industrial applications is often diminished by the large diffusional resistances of the membranes. Currently, there are no analytical studies on the performance of the MBR which account for both convective and diffusive transport. The purpose of this study was to quantify the efficiency of a biocatalytic membrane reactor used for the production of enzymes. This was done by developing exact solutions of the concentration and velocity profiles in the different regions of the membrane bioreactor (MBR). The emphasis of this study was on the influence of radial convective flows, which have generally been neglected in previous analytical studies. The efficiency of the MBR was measured by means of the effectiveness factor. An analytical model for substrate concentration profiles in the lumen of the MBR was developed. The model was based on the solution of the Navier-Stokes equations and Darcy’s law for velocity profiles, and the convective-diffusion equation for the solute concentration profiles. The model allowed for the evaluation of the influence of both hydrodynamic and mass transfer operating parameters on the performance of the MBR. These parameters include the fraction retentate, the transmembrane pressure, the membrane hydraulic permeability, the Reynolds number, the axial and radial Peclet numbers, and the dimensions of the MBR. The significant findings on the hydrodynamic studies were on the influence of the fraction retentate. In the dead-end mode it was found that there was increased radial convective flow, and hence more solute contact with the enzymes/biofilm immobilised on the surface of the membrane. The improved solute-biofilm contact however was only limited to the entrance half of the MBR. In the closed shell mode there was uniform distribution of solute, however, radial convective flows were significantly reduced. The developed model therefore allowed for the evaluation of an optimum fraction retentate value, where both the distribution of solutes and radial convective flows could be maximised.
Greene, Tanja L. "Modular crosslinking of gelatin based thiol-norbornene hydrogels for in vitro 3D culture of hepatic cells." Thesis, ACS Biomaterials Science and Engineering, 2015. http://hdl.handle.net/1805/9929.
Full textAs liver disease becomes more prevalent, the development of an in vitro culture system to study disease progression and its repair mechanisms is essential. Typically, 2D cultures are used to investigate liver cell (e.g., hepatocyte) function in vitro; however, hepatocytes lose function rapidly when they were isolated from the liver. This has promoted researchers to develop 3D scaffolds to recreate the natural microenvironment of hepatic cells. For example, gelatin-based hydrogels have been increasingly used to promote cell fate processes in 3D. Most gelatin-based systems require the use of physical gelation or non-specific chemical crosslinking. Both of these methods yield gelatin hydrogels with highly interdependent material properties (e.g., bioactivity and matrix stiffness). The purpose of this thesis research was to prepare modularly crosslinked gelatin-based hydrogels for studying the influence of independent matrix properties on hepatic cell fate in 3D. The first objective was to establish tunable gelatin-based thiol-norbornene hydrogels and to demonstrate that the mechanical and biological properties of gelatin hydrogels can be independently adjusted. Furthermore, norbornene and heparin dual-functionalized gelatin (i.e., GelNB-Hep) was prepared and used to sequester and slowly release hepatocyte growth factor (HGF). The second objective was to investigate the viability and functions of hepatocytes encapsulated in gelatin-based hydrogels. Hepatocellular carcinoma cells, Huh7, were used as a model cell type to demonstrate the cytocompatibility of the system. The properties of GelNB hydrogels were modularly tuned to systematically evaluate the effects of matrix properties on cell viability and functions, including CYP3A4 activity and urea secretion. The last objective was to examine the effect of heparin immobilization on hepatocyte viability and functions. The conjugation of heparin onto GelNB led to suppressed Huh7 cell metabolic activity and improved hepatocellular functions. This hybrid hydrogel system should provide a promising 3D cell culture platform for studying cell fate processes.
Schönrock, Michael [Verfasser], Bodo [Akademischer Betreuer] Laube, and Gerhard [Akademischer Betreuer] Thiel. "Modular design of ionotropic glutamate receptors: Coupling of a viral K+-channel with a glutamate-binding domain / Michael Schönrock ; Bodo Laube, Gerhard Thiel." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1182537499/34.
Full textDavis, Linda. "'N Kriminologiese ondersoek na motorvoertuigkaping met spesifieke verwysing na slagoffervatbaarheid, slagofferaandadigheid en die modus operandi van die oortreder." Thesis, Pretoria : [s.n.], 1999. http://upetd.up.ac.za/thesis/available/etd-03242004-103416/.
Full textMorodi, Lebogang Richard. "Juvenile perceptions of shop theft in the Mabopane area." Diss., 2004. http://hdl.handle.net/10500/1396.
Full textCriminology
M.A. (Criminology)
Liebenberg, Andre Sarel. "An evaluation of the impact of the Non-ferrous Metals Crime Combating Committee on copper cable theft." Thesis, 2020. http://hdl.handle.net/10500/27467.
Full textThis study aims to evaluate the Non-Ferrous Metals Crime Combating Committee's impact on combating copper cable theft in South Africa. Data was collected via in-depth interviews with awaiting trial detainees charged with copper cable theft at the Pollsmoor Correctional Centre in the Western Cape; members of the Mpumalanga and Gauteng Provincial Non-Ferrous Metals Crime Combating Committee; members of Business Against Crime South Africa; and investigators attached to Combined Private Investigations who investigate copper theft nationally. The in-depth interviews provided a comprehensive understanding of participant experiences relating to the impact of the Non-Ferrous Metals Crime Combating Committee on the combating of copper cable theft in South Africa. Moreover, the researcher performed a thorough literature study of the phenomenon locally and internationally. Research findings indicate shortcomings in the Non-Ferrous Metals Crime Combating Committee's effectiveness, limiting its impact on preventing copper cable theft. Based on these findings, the study recommends that the Non-Ferrous Metals Crime Combating Committee be replaced with a specialised South African Police Service Non-Ferrous Metals Theft Unit. Consequently, this study puts forward a set of recommendations proposing a systematic pro-active plan to address and minimise copper cable theft in South Africa. The proposed plan convincingly presents practical solutions to minimise copper cable theft and contributes to the current body of scholarship on copper cable theft in South Africa.
Inhloso yalolu cwaningo ukuhlola umthelela wohlelo lwe-Non-Ferrous Metals Crime Combating Committee mayelana nokuqedwa kokutshontshwa kwentambo yogesi (copper cable). Idatha iqoqwe ngokusebenzisa izinhlolovo ezijulile ezenziwa ngokusebenzisa iziboshwa eziboshelwe izintambo zikagesi ezisamele ukugwetshwa ejele lase Pollsmoor Correctional Centre ngaseNtshonalanga Kapa, amalunga eMpumalanga and Gauteng Provincial Non-Ferrous Metals Crime Combating Committee, amalunga eBusiness Against Crime South Africa kanye nabaphenyi abahambisana nophiko lweCombined Private Investigations oluphenya ukutshontshwa kwezintambo zikagesi ezweni lonke. Lezi zinhlolovo ezijulile zinikeze ulwazi olubanzi lwabadlalindima olumayelana nomthelela weNon-Ferrous Metals Crime Combating Committee mayelana nokuqedwa kokutshontshwa kwezintambo zikagesi. Ngaphezu kwalokho, umcwaningi wenze ucwaningo olunzulu lombhalo wobuciko mayelana nokutshontshwa kwezintambo zikagesi lapha ekhaya kanye nasemhlabeni wonke jikelele. Ulwazi olutholakele lukhombisa iziqi ezikhinyabeza ukusebenza kahle kweKomithi mayelana nokuvimbela umthelela walo mayelana nokutshontshwa kwezintambo zikagesi. Ngezizathu ezisuselwa phezu kwalolu lwazi, lolu cwaningo lubeka phambili isethi lezincomo ezinganceda iKomiti ekuqiniseni umthintela walo ngokuhlongoza uhlelo olugqugquzelayo lokunciphisa izinga lokutshontshwa kwezintambo zikagesi eNingizimu Afrika. Lolu hlelo oluhlongoziwe ngaphandle kokungabaza lwethula izixazululo ezenzeka empilweni yangempela ukunciphisa ukwetshiwa kwezintambo zikagesi kanti lokhu kunegalelo kwiziko lamanje futhi luqhubekisa iziko lamanje lwezifundo esimayelana nokwetshiwa kwezintambo zikagesi.
Maikemisetso a thutelo ye ke go lekola khuetso ya Komiti ya Twantsho ya Bosenyi bja Dimetale tse di Sego tsa Tshipi ka ga go lwantsha kutso ya megala ya koporo. Datha e kgobokeditswe ka mokgwa wa ditherisano tse di tseneletsego tseo di sepeditswego le mahodu a megala ya koporo ao a golegilwego ao a letetsego go sekiswa Senthareng ya Tshokollo ya Pollsmoor go la Kapa Bodikela, maloko a Diprofense tsa Mpumalanga le Gauteng a Komiti ya Twantsho ya Bosenyi bja Dimetale tse di sego tsa Tshipi, maloko a Dikgwebo tsa Kgahlanong le Bosenyi tsa Afrika Borwa le banyakisisi bao ba dirisanago le Dinyakisiso tsa Praebete tse Kopantswego tseo di nyakisisago kutso ya koporo kemong ya bosetshaba. Ditherisano tse di tseneletsego tse di file kwesiso ka botlalo ya maitemogelo a batseakarolo ye e sepelelanago le khuetso ya Komiti ya Twantsho ya Bosenyi bja Dimetale tse di sego tsa Tshipi ka ga go lwantsha kutso ya megala ya koporo. Gape, monyakisisi o dirile thutelo ya dingwalo ka botebo ya kutso ya megala ya koporo tikologong ya leagong le kemong ya boditshabatshaba. Dikhwetso tsa dinyakisiso di supa mafokodi ao a lebanego bokgoni bja Komiti tshitisong ya khuetso ya yona go kutso ya megala ya koporo. Go ya ka dikhwetso tse, thutelo ye e hlagisa sehlopha sa dikeletso tseo di ka thusago Komiti go tswetsa khuetso ya yona pele ka go sisinya leano la go itokisetsa seemo se ka diregago ka mokgwa wo o beakantswego go fokotsa kutso ya megala ya koporo ka Afrika Borwa. Leano leo le sisintswego le hlagisa ka mo go kgodisago ditharollo tse di ka phethagatswago go fokotsa kutso ya megala ya koporo ka gona la ba la seabe go le go tswetsa pele popego ya bjale ya borutegi ka ga kutso ya megala ya koporo.
Criminology and Security Science
Ph. D. (Criminal Justice)
Book chapters on the topic "Thiele modulus"
Didier, Dorian, Felix Reiners, and Andreas N. Baumann. "Thietanes and Thietes: Monocyclic." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-818655-8.00139-6.
Full textXu, Jiaxi. "Thietanes and Thietes: Fused and Spiro-Ring Derivatives." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-818655-8.00151-7.
Full textConference papers on the topic "Thiele modulus"
Zimmerman, William B. "Modelling Transport Limited Heterogeneous Chemistry in Microchannel Reactors." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58441.
Full textNagy, Endre. "Mass Transport Through Biocatalytic Membrane Reactors." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59403.
Full textSong, Shaozhen, Joyce Joy, Ruikang K. Wang, and Zhihong Huang. "Mapping tissue shear modulus on Thiel soft-embalmed mouse skin with shear wave optical coherence elastography." In SPIE BiOS, edited by Kirill V. Larin and David D. Sampson. SPIE, 2015. http://dx.doi.org/10.1117/12.2078289.
Full textSarlo, Rodrigo, and Donald Leo. "Airflow Sensing With Arrays of Hydrogel Supported Artificial Hair Cells." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9014.
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