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Relevant bibliographies by topics / Diffusion-controlled system

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Academic literature on the topic 'Diffusion-controlled system'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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Journal articles on the topic "Diffusion-controlled system"

1

Singh, Rajinder, P. Matharu, and J. K. Lalla. "A Diffusion Controlled Drug Delivery System for Theophylline." Drug Development and Industrial Pharmacy 20, no. 7 (1994): 1225–38. http://dx.doi.org/10.3109/03639049409038363.

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Hannech, El-B., and C. R. Hall. "Diffusion controlled reactions in Au/Pb–Sn solder system." Materials Science and Technology 8, no. 9 (1992): 817–24. http://dx.doi.org/10.1179/mst.1992.8.9.817.

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Desaulniers, Donald E., Ronald S. Kaufmann, John A. Cherry, and Harold W. Bentley. "37Cl-35Cl variations in a diffusion-controlled groundwater system." Geochimica et Cosmochimica Acta 50, no. 8 (1986): 1757–64. http://dx.doi.org/10.1016/0016-7037(86)90137-7.

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Li, Xin, Bin Jiang, Hong Yang, Xiang Sheng Xia, Jia Hong Dai, and Fu Sheng Pan. "Solid–Liquid Diffusion and Phase Growth Kinetics in Mg-Ca Binary System." Materials Science Forum 816 (April 2015): 418–23. http://dx.doi.org/10.4028/www.scientific.net/msf.816.418.

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The solid–liquid diffusion between Mg and Mg-10 at.% Ca alloy was studied at a temperature range of 570°C to 630°C for 10, 20, 30min, respectively. Only one compound, Mg2Ca, was observed in the diffusion couples. As the diffusion time increased, the dendritic structure of the diffusion layer became coarser. The thickness of the diffusion layer had an exponential relation to the experimental temperature. The Mg2Ca phase was observed to follow parabolic growth with diffusion time, which suggested that the growth of the Mg2Ca phase was controlled by diffusion mechanism. The activation energy was

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Kasahara, Kento, and Hirofumi Sato. "A theory of diffusion controlled reactions in polyatomic molecule system." Journal of Chemical Physics 145, no. 19 (2016): 194502. http://dx.doi.org/10.1063/1.4967400.

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Liu, Yongfeng, Kun Luo, Yifan Zhou, Mingxia Gao, and Hongge Pan. "Diffusion controlled hydrogen desorption reaction for the LiBH4/2LiNH2 system." Journal of Alloys and Compounds 481, no. 1-2 (2009): 473–79. http://dx.doi.org/10.1016/j.jallcom.2009.02.142.

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Dekker, L., and S. W. Brok. "Analysis And Simulation Of A Twodimensional Boundary-Controlled Diffusion System." International Journal of Modelling and Simulation 9, no. 3 (1989): 69–72. http://dx.doi.org/10.1080/02286203.1989.11760072.

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Mauri, Emanuele, Anna Negri, Erica Rebellato, Maurizio Masi, Giuseppe Perale, and Filippo Rossi. "Hydrogel-Nanoparticles Composite System for Controlled Drug Delivery." Gels 4, no. 3 (2018): 74. http://dx.doi.org/10.3390/gels4030074.

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Biodegradable poly(ethylene glycol)-block-poly(-lactic acid) (PEG-b-PLA) nanoparticles (NPs) were prepared by nanoprecipitation with controlled dimension and with different electric charges, as monitored by dynamic light scattering (DLS). Then NPs were loaded within hydrogels (HG) developed for biomedical applications in the central nervous system, with different pore sizes (30 and 90 nm). The characteristics of the resulting composite hydrogel-NPs system were firstly studied in terms of ability to control the release of small steric hindrance drug mimetic. Then, diffusion-controlled release o

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Boldhane, Sanjay, and Bhanudas Kuchekar. "Development and optimization of metoprolol succinate gastroretentive drug delivery system." Acta Pharmaceutica 60, no. 4 (2010): 415–25. http://dx.doi.org/10.2478/v10007-010-0031-x.

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Development and optimization of metoprolol succinate gastroretentive drug delivery systemMetoprolol succinate (MS) gastroretentive (GR) controlled release system was formulated to increase gastric residence time leading to improved drug bioavailability. Box-Behnken model was followed using novel combinations of sodium alginate (SA), sodium carboxymethylcellulose (NaCMC), magnesium alumino metasilicate (MAS) as independent variables. Floating lag time (Flag),t25,t50,t75, diffusion exponent as dependent variables revealed that the amount of SA, NaCMC and MAS have a significant effect (p< 0.05

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Limpongsa, Ekapol, and Kraisri Umprayn. "Preparation and Evaluation of Diltiazem Hydrochloride Diffusion-Controlled Transdermal Delivery System." AAPS PharmSciTech 9, no. 2 (2008): 464–70. http://dx.doi.org/10.1208/s12249-008-9062-8.

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Dissertations / Theses on the topic "Diffusion-controlled system"

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Chimphango, Annie F. A. "Diffusion channel system for controlled atmosphere storage of spinach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29675.pdf.

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Chimphango, Annie F. A. "Diffusion channel system for controlled atmosphere storage of spinach." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27300.

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Advanced research in Controlled/Modified Atmosphere storage systems has shown that open channels of different lengths and cross sectional areas, connected to an air tight storage chamber, are able to maintain variable stable gas concentrations which could be near optimal concentrations for CA/MA storage of various commodities.<br>This study was geared towards assessing the suitability of the diffusion channels in maintaining a desired gas concentration for CA storage of spinach. Initially, the respiratory behaviour of spinach was studied in gas sealed chambers (replicated four times) stored at

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Hannech, El Bahi. "Diffusion-controlled reactions in gold/lead-tin solder systems." Thesis, University of Warwick, 1989. http://wrap.warwick.ac.uk/106459/.

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Au/PbSn joints are widely used in the microelectronics industry. Intermetallic formation in Au/60Sn-40wt. %Pb and in Au/62Sn-36Pb-2wt. %Ag systems has been studied in the temperature range 80°C-160°C using diffusion couples. Interdiffusion between Au films and 60Sn-40wt. %Pb solder doped with 2 wt. % zinc has also been studied but at 125°C only, also using diffusion couples. The intermetallic phases were identified by Energy Dispersive X-ray Analysis (EDAX) in the Scanning Electron Microscope (SEM) and found to be gold-tin compounds. The predominant phases were found to be AuSn4 and AuSn2 but

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Симак, Д. М. "Науково-теоретичні основи масообміну у системах з твердою фазою". Thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/72595.

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Дисертація присвячена теоретичним та експериментальним дослідженням масообмінних процесів з твердою фазою у дво- та трифазних системах. Вирішена науково-технічна проблема дає змогу моделювати процеси сушіння, розчинення та екстрагування, використовувати нові методи їх інтенсифікації та розрахунку обладнання для їх проведення. Досліджено гідродинаміку, тепло- і масообмін та динаміку фільтраційного сушіння дисперсних матеріалів та визначено кінетичні коефіцієнти процесу. Досліджено розчинення полідисперсних сумішей у апараті періодичної дії за умови зміни рушійної сили та неперервне розчинення з

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Ruthven, Douglas M. "Adsorption and desorption kinetics for diffusion controlled systems with a strongly concentration dependent diffusivity." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-193874.

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The formal solution to the diffusion equation for transient adsorption in a semiinfinite medium with a strongly concentration dependent diffusivity, originally derived by Fujita ( 3 ), has been extended to desorption. Profiles for adsorption and desorption are compared and simplified asymptotic expressions which are useful when the diffusivity ratio is large are derived. The effect of a strongly concentration dependent diffusivity on adsorption and desorption kinetics is briefly considered.

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Totskiy, Yury [Verfasser], and H. [Akademischer Betreuer] Geckeis. "Tc-migration in advection/diffusion controlled natural systems: Influence of ferrous iron pool / Yury Totskiy. Betreuer: H. Geckeis." Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1099432383/34.

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Ruthven, Douglas M. "Adsorption and desorption kinetics for diffusion controlled systems with a strongly concentration dependent diffusivity: Adsorption and desorption kinetics for diffusion controlledsystems with a strongly concentration dependent diffusivity." Diffusion fundamentals 6 (2007) 51, S. 1-11, 2007. https://ul.qucosa.de/id/qucosa%3A14230.

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The formal solution to the diffusion equation for transient adsorption in a semiinfinite medium with a strongly concentration dependent diffusivity, originally derived by Fujita ( 3 ), has been extended to desorption. Profiles for adsorption and desorption are compared and simplified asymptotic expressions which are useful when the diffusivity ratio is large are derived. The effect of a strongly concentration dependent diffusivity on adsorption and desorption kinetics is briefly considered.

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McKee, Justin. "A phase II randomised controlled trial of amiloride as a neuroprotective treatment in optic neuritis : studying in vivo neurodegeneration, neuroprotection and cortical plasticity after an inflammatory insult to the visual system." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:824ca36c-68ed-4b0c-90dc-925941ce9450.

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Basic science and early clinical trial evidence suggest the safe diuretic drug amiloride, may exert a neuroprotective effect in multiple sclerosis (MS) through blockade of the acid sensing ion channel. Neuroprotective treatments are a key unmet need in multiple sclerosis. Optic neuritis (ON) is a discrete CNS inflammatory event leading to neuro-axonal injury in the optic nerve and retina. The optic nerve is part of the visual system, one of the most functionally and structurally eloquent systems in the central nervous system, which affords a number of unique modalities to assess neurodegenerat

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Barkle, Gregory Francis. "The fate of carbon and nitrogen from an organic effluent irrigated onto soil : process studies, model development and testing." Lincoln University, 2001. http://hdl.handle.net/10182/1959.

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The fate of the carbon and nitrogen in dairy farm effluent (DFE) applied onto soil was investigated through laboratory experiments and field lysimeter studies. They resulted in the development and testing of a complex carbon (C) and nitrogen (N) simulation model (CaNS-Eff) of the soil-plant-microbial system. To minimise the risk of contamination of surface waters, regulatory authorities in New Zealand promote irrigation onto land as the preferred treatment method for DFE. The allowable annual loading rates for DFE, as defined in statutory regional plans are based on annual N balance calculati

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Baheti, Varun A. "Diffusion-Controlled Growth of Phases in Metal-Tin Systems Related to Microelectronics Packaging." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/3985.

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The electro–mechanical connection between under bump metallization (UBM) and solder in flip–chip bonding is achieved by the formation of brittle intermetallic compounds (IMCs) during the soldering process. These IMCs continue to grow in the solid–state during storage at room temperature and service at an elevated temperature leading to degradation of the contacts. In this thesis, the diffusion–controlled growth mechanism of the phases and the formation of the Kirkendall voids at the interface of UBM (Cu, Ni, Au, Pd, Pt) and Sn (bulk/electroplated) are studied extensively. Based on the microst

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Books on the topic "Diffusion-controlled system"

1

Hannech, El Bahi. Diffusion-controlled reactions in gold/lead-tin solder systems. typescript, 1989.

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2

Polishchuk, Alexandre Ya. Multicomponent transport in polymer systems for controlled release. Gordon and Breach Science publishers, 1997.

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3

Mangukia, Dhruv. Transdermal Drug Delivery System: Formulation and Evaluation of Matrix Diffusion Controlled Transdermal Patch of Glipizide. LAP Lambert Academic Publishing, 2012.

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4

Nitzan, Abraham. Chemical Dynamics in Condensed Phases. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/9780191947971.001.0001.

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Abstract This second edition builds on the first, providing a uniform approach to diverse problems encountered in the study of dynamical processes in condensed-phase molecular systems. It focuses on three themes: coverage of needed background material, in-depth introduction of methodologies, and analysis of several key applications to processes of importance in physical, chemical and biological phenomena in complex systems. Chapter 1 starts with a general review of basic mathematical and physical methods. It is followed by a few introductory chapters on quantum dynamics (Chapter 2), radiation–

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Nitzan, Abraham. Chemical Dynamics in Condensed Phases. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780198529798.001.0001.

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This text provides a uniform and consistent approach to diversified problems encountered in the study of dynamical processes in condensed phase molecular systems. Given the broad interdisciplinary aspect of this subject, the book focuses on three themes: coverage of needed background material, in-depth introduction of methodologies, and analysis of several key applications. The uniform approach and common language used in all discussions help to develop general understanding and insight on condensed phases chemical dynamics. The applications discussed are among the most fundamental processes t

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Riggsby, Andrew. Mosaics of Knowledge. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190632502.001.0001.

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The book examines the invention, use, and diffusion of ancient Roman information technologies. In particular, it looks at technologies defined in conceptual terms—lists, tables, weights and measures, perspective and related artistic devices, and cartography—rather than mechanical ones (e.g., “tablet” or “scroll”). Each is viewed from both social and cognitive perspectives, as well as with attention to the interaction between the conceptual and its material instantiation. The study is particularly focused on the most powerful technologies, whose uptakes are in most cases sporadic across time, s

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Book chapters on the topic "Diffusion-controlled system"

1

Price, James C. "Diffusion Controlled Systems: Polymericmicrocapsules." In Polymers for Controlled Drug Delivery. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418252-1.

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Korsmeyer, Richard W. "Diffusion Controlled Systems: Hydrogels." In Polymers for Controlled Drug Delivery. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418252-2.

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Kornienko, Semen V., Yuriy A. Lyashenko, and Andriy M. Gusak. "Diffusion Phase Competition in Ternary Systems." In Diffusion-Controlled Solid State Reactions. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527631025.ch9.

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Siepmann, Juergen, Ronald A. Siegel, and Florence Siepmann. "Diffusion Controlled Drug Delivery Systems." In Fundamentals and Applications of Controlled Release Drug Delivery. Springer US, 2011. http://dx.doi.org/10.1007/978-1-4614-0881-9_6.

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Kollár, Maroš, Lukas Hudec, and Wanda Benesova. "Semantically Controlled Texture Synthesis by Diffusion Model." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-73110-5_26.

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am Ende, Mary Tanya, and Antonios G. Mikos. "Diffusion-Controlled Delivery of Proteins from Hydrogels and Other Hydrophilic Systems." In Pharmaceutical Biotechnology. Springer US, 2002. http://dx.doi.org/10.1007/0-306-46803-4_5.

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Gingras, M. J. P., and Z. Ràcz. "Stability Analysis of Diffusion-Controlled Growth: Onset of Instabilities and Breakdown of the Linear Regime." In Nonlinear Structures in Physical Systems. Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3440-1_7.

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Binder, K., and D. W. Heermann. "Growth of Domains and Scaling in the Late Stages of Phase Separation and Diffusion-Controlled Ordering Phenomena." In Scaling Phenomena in Disordered Systems. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-1402-9_18.

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Iordanskii, A. L., T. E. Rudakova, and G. E. Zaikov. "The role of diffusion processes under controlled release of biologically active substances from polymer therapeutic systems." In Interactions of Polymers with Bioactive and Corrosive Media. CRC Press, 2023. http://dx.doi.org/10.1201/9780429071027-4.

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Salwén, Anders. "Modeling of Volume Diffusion-Controlled Phase Transformations in Multiphase Multicomponent Alloy Systems by Minimization of Gibbs Energy." In TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05861-6_99.

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Conference papers on the topic "Diffusion-controlled system"

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Kelly, D. R., D. A. Little, and D. J. Dobrez. "An Alternative Method for Delivering Cooling Water Treatment Chemicals Using Controlled Release Technology." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07069.

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Abstract A diffusion based controlled release technology is now being used as a method to introduce chemistry into an open recirculating cooling system. Controlled release technology applied to a cooling tower water treatment program enables accurate delivery of chemistry without the use of mechanical pumps or handling of liquid chemicals. Our laboratory work examined how factors such as formulation, temperature, flow, and coating weight affect this feed method. In addition to the technology overview, case studies of current applications will be presented.

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Ramachandran, Sunder, Kirk Miner, Michael Greaves, Jason Thomas, and Vladimir Jovancicevic. "Optimizing the Treatment of Low Flow Pipelines Using a Time-Released Product with the Use of Residence Time Distribution Models." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10328.

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Abstract Many shallow gas systems in North America experience a large decline in production with time. Flow rates are often low and liquid residence times are long in such systems. A new time-released, encapsulated product has been developed for such systems. Residence time distribution functions are often used to understand reactant conversion in non-ideal reactors and it is believed that their use in understanding the transport of chemicals can be applicable in corrosion control of slow moving systems. There are many parameters that affect the deliverability, effectiveness and control of the

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Castaneda, H., G. Zambrano, C. Angeles, and J. Genesca. "Film Stability for API 5L X-52 Line Pipe Steel in CO2 (aq) and Cl- (aq) Solutions in Presence of Amine Based Inhibitor under Hydrodynamic Conditions." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04361.

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Abstract Film stability for the system Fe-Cl--CO2-H2O is characterized by electrochemical methods and surface analysis techniques. Additions of CO2 (g) to API 5L X-52 steel exposed in brine solutions promoted the formation of FeCO3 on active sites left by dissolution of FexOy films under hydrodynamic conditions. When rotating rate is introduced to the steel-electrolyte interface, a competition for the active sites is showed during electrochemical experiments because of the diffusion phenomenon of the ionic species to the surface of the metal interface. These interface interaction creates activ

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Hoffmeister, Hans. "Modeling the Effect of Chloride Content on H2S Corrosion by Coupling of Phase and Polarization Behavior." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07501.

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Abstract In a previous work a deterministic H2S-corrosion model for calculation of precipitation of FeS2 together with respective acidification at the anodic sites of an assumed corrosion system for pure Fe was described. The model is based on coupling the anodic polarization resistances to the precipitated equilibrium masses of FeS2 which in a “closed loop” time stepwise procedure are calculated from the solute concentrations in a diffusion boundary layer. With the cathodical process controlled by hydrogen diffusion the precipitation of FeS2 enforces local pH reductions at the anodic site dep

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Johnson, Kristian C., Daniel T. MacLauchlan, H. Josiah Phan, B. Blake Wiggins, Cody D. Williams, and Jonathan Tatman. "Evaluation of Highly Irradiated Stainless Steel and Nickel-based Materials using Phased Array Ultrasonic Inspections." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0397.

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Abstract Nuclear reactor inspections occasionally identify degraded materials in irradiated reactor components. Although mechanical repair options are possible, these repair solutions may be cost prohibitive or impractical to implement due to access restraints and/or the severity of the degradation. Welding repair of reactor components may input excessive heat into these irradiated materials resulting in diffusion of trace amounts of helium within the grain boundaries of the weld heat-affected zone (HAZ). Intergranular HAZ cracking can then result from the combination of this helium diffusion

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Almahamedh, Hussain H., Charles Williamson, John R. Spear, Brajendra Mishra, and David L. Olson. "Sulfate Reducing Bacteria Influenced Corrosion of Carbon Steel- Nutrient Effects." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11232.

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Abstract The effect of adding fresh nutrients to the growth of Sulfate-Reducing Bacteria (SRB), Desulfovibrio desulfuricans, in synthetic seawater was investigated by counting the planktonic cells in the solution. The corrosion of carbon steel exposed to mixed solution in the presence and absence of Desulfovibrio desulfuricans was characterized by Electrochemical Impedance Spectroscopy (EIS), linear polarization resistance (Rp) and open circuit potential (OCP) measurements. EIS spectra showed two time constants for the sterilized system of synthetic seawater and growth media. A high frequency

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Chen, Tzu-Yu, Sang-Hea Shim, and M. Linda Lin. "Polarization Studies of Mild Steel in the Presence of Chelants at High Temperature." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90143.

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Abstract Corrosion of mild steel in the presence of chelants, such as EDTA and NTA, was studied at 180°F (82°C) using the potentiodynamic polarization and linear polarization techniques. In a rotating cylinder system, the effects of chelant concentration, pH, rotating speed, and calcium addition in deaerated solutions were investigated. At pH 9, the corrosion was at least partially controlled by diffusion in the presence of 20 or 200 ppm of EDTA or NTA. The rate of corrosion increased with increasing rotating speed (rpm) and chelant concentration. At pH 11 and 200 ppm EDTA or NTA, the anodic d

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Denpo, Kozo, and Hiroyuki Ogawa. "Corrosion Behavior of Pipe and Tube Materials in Injection Systems." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93060.

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Abstract Corrosion problems in water injection systems are as important as those in the production systems. Water treatment is carefully conducted and operationl conditions are established after various tests to reduce the corrosion rate in the field. The problems are considered from two environmental aspects of fluid velocity and concentration of dissolved oxygen in water. Two kinds of experiments were conducted to clarify the effect of flow velocity and concentration of dissolved oxygen on corrosion rate of carbon steel and 13Cr steel. One was flow loop test with pipe specimen to obtain corr

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Chude-Okonkwo, Uche A. K. "Diffusion-controlled enzyme-catalyzed molecular communication system for targeted drug delivery." In GLOBECOM 2014 - 2014 IEEE Global Communications Conference. IEEE, 2014. http://dx.doi.org/10.1109/glocom.2014.7037236.

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Moura, Scott, Victor Ruiz, and Jan Bendsten. "Modeling Heterogeneous Populations of Thermostatically Controlled Loads Using Diffusion-Advection PDEs." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-3809.

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This paper focuses on developing a partial differential equation (PDE)-based model and parameter identification scheme for heterogeneous populations of thermostatically controlled loads (TCLs). First, a coupled two-state hyperbolic PDE model for homogenous TCL populations is derived. This model is extended to heterogeneous populations by including a diffusive term, which provides an elegant PDE control-oriented model. Second, a novel parameter identification scheme is derived for the PDE model structure, which utilizes only boundary measurements and aggregated power measurements. Simulation re

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Reports on the topic "Diffusion-controlled system"

1

Sirivat, Anuvat. Electrically controlled release of drugs from alginate hydrogels for transdermal drug delivery application. Chulalongkorn University, 2014. https://doi.org/10.58837/chula.res.2014.80.

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A drug-loaded conductive polymer/hydrogel blend, benzoic acid-loaded poly(3,4-ethylenedioxythiophene/alginate (BA-loaded PEDOT/Alg) hydrogel, was used as a carrier/matrix for an electrical stimuli transdermal drug delivery system (TDDS). The effects of crosslinking ratio, PEDOT particle size, and electric field strength on the release mechanism and the diffusion coefficient (D) of BA were examined by using a modified Franz-diffusion cell. The diffusion scaling exponent value of BA is close to 0.5 which refers to the diffusion controlled mechanism, or the Fickian diffusion as the BA release mec

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Shreve, Steven E., and H. M. Soner. Controlled Diffusion Approximations for Controlled Queueing Systems. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada358081.

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Chutimaworapan, Suchada, Chaiyo Chaichantippayuth, and Areerat Laopaksa. Formulation of pharmaceutical products of Garcinia mangostana Linn. extracts. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.32.

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Part I: The purpose of the investigation was to develop the extraction process that was simple, practical and giving high yield. The maceration of dried powder of Garcinia mangostana fruit husk with ethyl acetate gave yellow crystalline powder of mangostin. The yield was calculated as 7.47%. The identification of the Garcinia mangostanahusk extract was carried out by thin-layer chromatography (TLC) and differential scanning calorimetry. The TLC of mangostin was done by using the alumina sheet and ethyl acetate: hexane (3:1) as mobile phase. The Rf value as compared with standard mangostin was

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Allen, Jeffrey, Robert Moser, Zackery McClelland, Md Mohaiminul Islam, and Ling Liu. Phase-field modeling of nonequilibrium solidification processes in additive manufacturing. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42605.

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This project models dendrite growth during nonequilibrium solidification of binary alloys using the phase-field method (PFM). Understanding the dendrite formation processes is important because the microstructural features directly influence mechanical properties of the produced parts. An improved understanding of dendrite formation may inform design protocols to achieve optimized process parameters for controlled microstructures and enhanced properties of materials. To this end, this work implements a phase-field model to simulate directional solidification of binary alloys. For applications

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Singh, Niranjan. A Method of Sound Wave Diffusion in Motor Vehicle Exhaust Systems. Unitec ePress, 2017. http://dx.doi.org/10.34074/ocds.072.

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It is common practice among young vehicle owners to modify the exhaust system of their vehicle to reduce exhaust backpressure with the perception that the output power increases. In the process of backpressure reduction, the output noise (Whakapau) of the vehicle also increases correspondingly. The conflict of interest that arises from modified vehicle exhaust systems and the general public is well publicised. This prototype was designed to meet the demands of exhaust back pressure reduction while at the same time mitigate the sound output of the vehicle. The design involves lining a cylindric

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