Relevant bibliographies by topics / Ink−powder interactions

Academic literature on the topic 'Ink−powder interactions'

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Published: 6 September 2023

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Journal articles on the topic "Ink−powder interactions"

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Barui, Srimanta, Hui Ding, Zixin Wang, Hu Zhao, Shashidhara Marathe, Wajira Mirihanage, Bikramjit Basu, and Brian Derby. "Probing Ink–Powder Interactions during 3D Binder Jet Printing Using Time-Resolved X-ray Imaging." ACS Applied Materials & Interfaces 12, no. 30 (June 22, 2020): 34254–64. http://dx.doi.org/10.1021/acsami.0c03572.

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Hammer, Sonja, Sándor Bekö, Jürgen Glinnemann, and Martin Schmidt. "Crystal Structures of Pigment Red 57:1." Acta Crystallographica Section A Foundations and Advances 70, a1 (August 5, 2014): C138. http://dx.doi.org/10.1107/s2053273314098611.

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Zeitschrift für Kristallographie, Angewandte Chemie, The New York Times, The Sun, El Pais, La Republica, Le Monde, Shanghai Daily, and many more journals and newspapers are printed with Pigment Red 57:1. P.R.57:1 (C18H12CaN2O6S · n H2O, n = 0,1,3) is the most important organic red pigment with a production of more than 50,000 tons per year and an annual sales volume of more than 200 million Euro.[1] In printing ink the pigment is not dissolved, but finely dispersed. Consequently its solid-state properties are maintained. Like most pigments, P.R.57:1 occurs in different crystal phases with different colours. Upon synthesis a trihydrate is formed. Drying at 500C generates a monohydrate with magenta shade, which is used for printing inks. The monohydrate is thermally stable up to temperatures higher than 1900C before it releases water to yield a hygroscopic anhydrous phase with dull dark magenta shade. For all three phases the growth of single crystals is impeded by the low solubility of the pigment in most media. The crystal structures of all three forms were determined from in-house X-ray powder data.[2] The structures were solved by real-space methods with simulated annealing. Subsequently a Rietveld refinement with restraints on bond lengths, bond angles and planar groups was performed. All three phases crystallize in space-group type P21/c, Z = 4. The trihydrate and the monohydrate show eightfold coordination of the Ca ions, the anhydrate a sevenfold one. Apparently the increasing anion-cation interactions lead to the observed colour shift. The arrangement of cations and anions is similar in all three forms. The crystal structures exhibit double layers, one polar, one nonpolar. The polar layer consists of water molecules, calcium ions, sulfonate, keto and carboxylate groups, held together mostly by hydrogen bonds and Coulomb interactions. The nonpolar layer contains naphthalene and toluene moieties.
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Hamano, Ryohei, and Toshiyuki Ikoma. "Preparation of α-alumina powder and binder For 3D printer." MRS Advances 3, no. 18 (2018): 969–75. http://dx.doi.org/10.1557/adv.2018.300.

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ABSTRACTAlpha-alumina is a ceramic with excellent chemical stability, mechanical property, high melting point, and insulating property; however, it shows poor workability due to its low fracture toughness. There are a lot of molding processes for α-alumina, such as press molding and extrusion methods. 3D printing is rapidly growing technology to make complex and precious moldings. However, there are still only a few descriptions on 3D ink-jet powder laminating printings for α-alumina due to no self-hydration hardening property. To achieve α-alumina moldings with the 3D ink-jet printers, powder fluidity of α-alumina powders and binders for bonding the powders should be investigated. The powders mixed with α-alumina at 20, 3.4 and 0.4 μm in sizes were adjusted to improve powder fluidity and packing density. Polyvinyl alcohol (PVA) or polyallylamine (PAA) including other additives was used as an ink. The addition of PVA on the adjusted powders made no chemical interaction of powders and no retention of shapes, but that of PAA formed the printed moldings. The relative packing density and compressive strength of the printed moldings were 40 % and 8.2 kPa, which was clearly depended on the printed directions due to the nozzle structure of printer head. Sintering the moldings at 1500°C caused near-net zero shrinkage and improved the maximum compressive strength at 3.6 MPa.
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Kitsak, A. I. "Efficiency of fire extinguishing with general purpose fire extinguishing powder in case of non-stationary interaction of its particles with burning material." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 65, no. 4 (December 31, 2020): 476–86. http://dx.doi.org/10.29235/1561-8358-2020-65-4-476-486.

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Evaluation of the effectiveness of fire extinguishing by jet systems of powder fire extinguishing in conditions of non-stationary heat exchange processes and heterogeneous inhibition of active flame centers by powder particles was the aim of the work. The theoretical dependence of the amount of heat, absorbed by the particles of fire extinguishing powder, and the reaction rate of heterogeneous active centers of flame, inhibiting them, in non-stationary conditions of heat transfer, as well as inhibition reaction for fire extinguishing ink jet systems were obtained. The extinguishing of a flame with a fire extinguishing powder under non-stationary conditions is more effective, the smaller is the effective size of the powder particles, the longer is their stay in the combustion zone, and the shorter are the characteristic times of heat transfer and inhibition reaction. Comparison of the estimates of the characteristic duration of heat transfer and inhibition reaction for widely used fire extinguishing powders has shown a large inertia of the thermal mechanism of fire extinguishing, which greatly reduces its effectiveness at high speeds of powder particles in the combustion zone.
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Kitsak, A. I. "Efficiency of fire extinguishing with general purpose fire extinguishing powder in case of non-stationary interaction of its particles with burning material." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 65, no. 4 (December 31, 2020): 476–86. http://dx.doi.org/10.29235/1561-8358-2020-65-4-476-486.

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Evaluation of the effectiveness of fire extinguishing by jet systems of powder fire extinguishing in conditions of non-stationary heat exchange processes and heterogeneous inhibition of active flame centers by powder particles was the aim of the work. The theoretical dependence of the amount of heat, absorbed by the particles of fire extinguishing powder, and the reaction rate of heterogeneous active centers of flame, inhibiting them, in non-stationary conditions of heat transfer, as well as inhibition reaction for fire extinguishing ink jet systems were obtained. The extinguishing of a flame with a fire extinguishing powder under non-stationary conditions is more effective, the smaller is the effective size of the powder particles, the longer is their stay in the combustion zone, and the shorter are the characteristic times of heat transfer and inhibition reaction. Comparison of the estimates of the characteristic duration of heat transfer and inhibition reaction for widely used fire extinguishing powders has shown a large inertia of the thermal mechanism of fire extinguishing, which greatly reduces its effectiveness at high speeds of powder particles in the combustion zone.
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Chen, Tian Ding. "Chinese Calligraphy Brush Stroke Interactive Model with Ink Diffusion Style." Advanced Materials Research 108-111 (May 2010): 507–12. http://dx.doi.org/10.4028/www.scientific.net/amr.108-111.507.

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This paper presents an interactive method of using ink diffusion, and gradually approaching simulation brush character with style of Chinese painting and calligraphy. Try to use materials based on the Chinese ink painting: ink and rice paper, according to their characteristics to build the diffusion rules to simulate text ink. Although the initial can show the phenomenon of ink rendering, they can only show diffusion of the ink with black lines, Can not rendering a complete ink diffusion behavior, it is difficult to form a sense of artistic calligraphy. It proposes Interactive model to amend the power of the brush pen and puts forward a binding behavior of ink broken down. The results show that based on the pratice physical meaning, considering the interaction of the two materials(ink and rice paper), appropriate to improve the mathematical equation model to render the calligraphy image more in line with Chinese ink painting style.
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Srivastav, Harsh, Adam Z. Weber, and Clayton J. Radke. "Predicting Fuel Cell Ink Aggregation." ECS Meeting Abstracts MA2022-02, no. 41 (October 9, 2022): 1533. http://dx.doi.org/10.1149/ma2022-02411533mtgabs.

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Polymer-electrolyte fuel cells (PEFCs) provide multisector decarbonization solutions including in transportation, manufacturing, and long-term energy storage. They have become increasingly popular in these areas due to their high efficiency, power density, and low (or zero) emissions compared to traditional fossil-fuel dependent processes. The PEFC catalyst layer is the most complex and key part of the cell, and is critical for optimizing PEFC performance. Several studies have explored the structure/function relationships of PEFC catalyst layers, yet the physics and interactions controlling its in-situ formation remain a mystery. PEFC catalyst layers are traditionally fabricated out of a catalyst supported on a carbon nanoparticle with an ionomer, traditionally perfluorosulfonic acids (PFSAs) such as Nafion, as a binder, which stabilizes the carbon suspensions in the ink dispersion. Recent studies demonstrated the importance of pH as an experimental parameter for both comparison and characterization of such systems.1 In this talk, we explore the interactions in the colloidal inks through detailed mathematical modeling. We propose a kinetics-based model representing species aggregation with pointwise interacting spheres that vary in charge through buried side chains for predicting the aggregation behavior of Nafion and carbon in solutions under varying conditions, such as solvent, Nafion wt% and carbon wt%. To demonstrate the accuracy and robustness of the model, we compare the results against a range of pH conditions and size distributions. The insights from the model help establish design criteria and guide future ink and process conditions. Acknowledgements This study was conducted under the Million Miles Fuel Cell Truck Consortium (M2FCT) funded by the Hydrogen and Fuel Cell Technologies Office in the Energy Efficiency and Renewable Energy Office of the U.S. Department of Energy under contract DE-AC02-05CH11231. References S. A. Berlinger, B. D. McCloskey, and A. Z. Weber, J. Phys. Chem. B, 122, 7790–7796 (2018).
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Wang, Lei, and Na Li. "Pythagorean fuzzy interaction power Bonferroni mean aggregation operators in multiple attribute decision making." International Journal of Intelligent Systems 35, no. 1 (November 14, 2019): 150–83. http://dx.doi.org/10.1002/int.22204.

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Boulware, Douglas, John Salerno, Nina Zumel, and Michael Manno. "Buddy: Harnessing the power of the internet." International Journal of Intelligent Systems 23, no. 1 (2007): 82–111. http://dx.doi.org/10.1002/int.20249.

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Vu, Thu Ha Thi, Minh Dang Nguyen, and Anh Tuan Ngoc Mai. "Influence of Solvents on the Electroactivity of PtAl/rGO Catalyst Inks and Anode in Direct Ethanol Fuel Cell." Journal of Chemistry 2021 (April 27, 2021): 1–15. http://dx.doi.org/10.1155/2021/6649089.

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This paper presents research on the effects of common solvents such as n-butyl acetate, isopropanol, and ethanol on the properties and electroactivity of catalyst ink based on PtAl/rGO. The inks prepared by mixing PtAl/rGO catalyst, Nafion solution (5 wt%), and solvent were coated on carbon cloth by the spin coating method. The results obtained showed that ethanol was the most suitable solvent for the preparation of catalyst ink with a volume ratio between catalyst slurry and solvent of 1 : 1 (CI-EtOH (1/1) ink). The surface of the CI-EtOH (1/1) coated electrode was smooth, flat, and even and had no cracks due to the increase of Nafion mobility, resulting in significant improvement in the interaction between Pt particles and ionomer. Moreover, the electrochemical activity of the CI-EtOH (1/1) ink in ethanol electrooxidation reaction, in both acidic and alkaline media, has the highest value, with the forward current density, IF, reaching 1793 mA mgPt−1 and 4751 mA mgPt−1, respectively. In the application in direct ethanol fuel cell (DEFC), the CI-EtOH ink-coated anode also exhibited the highest power density in both PEM-DEFC (with a proton exchange membrane) and AEM-DEFC (with an anion exchange membrane) at 19.10 mW cm−2 and 27.07 mW cm−2, respectively.
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Dissertations / Theses on the topic "Ink−powder interactions"

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Khodamoradi, Aram. "Stability Monitoring and Controller Autotuning of Power Converters in DC Microgrid." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3422335.

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Recently, there has been an increasing interest towards grouping several power resources together with some loads as well as some energy storage systems in a microgrid environment. This is mainly because a high number of distributed energy resources (DERs), such as renewable energies and energy storage systems can be integrated in a microgrid environment, that, in turn, will lead to a reduction in the transmission and distribution losses, the overall system costs, as well as the CO2 emissions. In addition, as the generation is going to be mostly near to the consumption point, the power quality, eciency and reliability will be signicantly increased. Microgrids are also a smart choice for the remote locations that are beyond reach of the current grid. Dc microgrids bring with some advantages over their ac counter part. For instance, they are more compatible with the dc nature of many DERs such as photovoltaics and energy storage systems. Also, the inductive voltage drop is removed in a dc system. Thus, a large number of DERs can be integrated into a dc microgrid by taking advantage of power electronic converters, that introduce several control and operation benets. Power converters used in dc microgrids are usually equipped with several control loops. When many converters are connected to a common dc bus, the dynamic performance of some control loops may be dierent from the behavior designed for the stand-alone converter, due to possible eects of the interconnected converters. This issuewhich is typically referred to as the `interaction effect' of multiple parallel converters can lead to stability and performance concerns in a dc microgrid. Thus, interaction eect on a generic control loop depends on the interconnected power converters, for instance, on their topology, control structure, parameters, etc. In order to know the real-time control performance and stability of the control loops within dc microgrid power converters, it is important to equip the converters with online stability monitoring tools. The monitored data will not only include the internal stability conditions of each loop, but also take the interaction eect into account. Subsequently, some corrective actions can be introduced in the system to maintain a desired dynamic performance and avoid instability. In addition, in the context of smart microgrids, the advanced monitoring tools, as well as adaptive control and management actions are of a wide interest. This work rstly, investigates an on-line stability monitoring technique that is inspired by the Middlebrook's injection method. This method allows to estimate and monitor the stability margins of a generic control loop (e.g., current loop, voltage loop, droop loops, etc.) within dc microgrid power converters. Since we target a multi-converter environment, the presence of multiple perturbations coming from the monitoring units of several converters is also taken into account. Secondly, two dierent on-line tuning techniques are proposed, that both aim to achieve the desired phase margin for a generic control loop at the reference bandwidth. These methods are based on injecting a small-signal perturbation at the desired reference crossover frequency into the loop under study. In other caseswhere a full picture about the performance of dierent loops over the entire bandwidth is desiredmultiple orthogonal pseudo-random binary sequences (PRBSs) are proposed to be simultaneously injected in several control loops. This will provide the frequency responses of all the loops in a single measurement cycle. Finally, in order to further assess the microgrid-level stability and dynamic performance, some of the monitored data are eectively used to estimate the dc bus impedance, which has been shown to provide a measure of the stability and performance of the entire microgrid. All the stability monitoring and adaptive tuning functions are experimentally validated in a laboratory setup that emulates a dc microgrid.
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Ibarra, Francisco. "The Connective Power of Reminiscence: Designing a Reminiscence-based Tool to Increase Social Interactions in Residential Care." Doctoral thesis, Università degli studi di Trento, 2018. https://hdl.handle.net/11572/368602.

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Reminiscence powers therapeutic interventions such as Life review and Reminiscence therapy, with well known positive outcomes on the wellbeing of older adults. In particular, reminiscence therapy supported by technology can increase self-esteem, facilitate social interactions and increase opportunities for conversation. Much research on reminiscence technology has in fact focused on improving interactions and conversation, mainly for people with dementia. Nonetheless, the potential for reminiscence to discover common life points among residents in residential care facilities and especially to use this information to foster bonding between residents has been little explored. The focus of this thesis is to design a reminiscence-based tool, to be used in nursing homes to stimulate interactions among older adults, family members, and nursing home staff. We start by describing early work that reinforces the potential of ICT interventions on improving the wellbeing of older adults. These studies highlight the importance of social interactions on social wellbeing and of doing activities together in engagement and motivation. Through review works and exploratory studies we confirm the positive effects of social interaction on the wellbeing of older adults, the benefits associated to contributing, and the opportunities to improve social interactions, not only from distance but also in co-located settings. In nursing homes we find a context that requires improving social interactions, and in reminiscence we find an ideal activity to make contributors out of older adults, stimulate conversation, and possibly increase connectedness between older adults and their networks. A series of studies were conducted with nursing homes stakeholders to define and design a tool suitable to their current practices, that could be used and adopted in nursing homes to stimulate co-located interactions. In this thesis, we present the work carried out to define and validate and concept of a reminiscence-based tool, and describe how input from nursing home stakeholders has been integrated into the design of a tool to improve social interactions in residential care facilities.
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Ibarra, Francisco. "The Connective Power of Reminiscence: Designing a Reminiscence-based Tool to Increase Social Interactions in Residential Care." Doctoral thesis, University of Trento, 2018. http://eprints-phd.biblio.unitn.it/2937/1/Ibarra-2018-phd_thesis_final.pdf.

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Reminiscence powers therapeutic interventions such as Life review and Reminiscence therapy, with well known positive outcomes on the wellbeing of older adults. In particular, reminiscence therapy supported by technology can increase self-esteem, facilitate social interactions and increase opportunities for conversation. Much research on reminiscence technology has in fact focused on improving interactions and conversation, mainly for people with dementia. Nonetheless, the potential for reminiscence to discover common life points among residents in residential care facilities and especially to use this information to foster bonding between residents has been little explored. The focus of this thesis is to design a reminiscence-based tool, to be used in nursing homes to stimulate interactions among older adults, family members, and nursing home staff. We start by describing early work that reinforces the potential of ICT interventions on improving the wellbeing of older adults. These studies highlight the importance of social interactions on social wellbeing and of doing activities together in engagement and motivation. Through review works and exploratory studies we confirm the positive effects of social interaction on the wellbeing of older adults, the benefits associated to contributing, and the opportunities to improve social interactions, not only from distance but also in co-located settings. In nursing homes we find a context that requires improving social interactions, and in reminiscence we find an ideal activity to make contributors out of older adults, stimulate conversation, and possibly increase connectedness between older adults and their networks. A series of studies were conducted with nursing homes stakeholders to define and design a tool suitable to their current practices, that could be used and adopted in nursing homes to stimulate co-located interactions. In this thesis, we present the work carried out to define and validate and concept of a reminiscence-based tool, and describe how input from nursing home stakeholders has been integrated into the design of a tool to improve social interactions in residential care facilities.
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Mistry, Zubin, Venkata Harish Babu Manne, Andrea Vacca, Etienne Dautry, and Martin Petzold. "A numerical model for the evaluation of gerotor torque considering multiple contact points and fluid-structure interactions." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71111.

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This paper presents a numerical model for the evaluation of the actual torque in Gerotor units. The model consists of two major modules: the pre-processor module and the HYGESim module. The preprocessor module consists of the geometric and the mechanical module. The geometric pre-processor module considers the CAD geometry of Gerotor with tolerances as input and it provides as output the geometric features needed to evaluate the rotor loading and the flow features. The mechanical preprocessor module evaluates the forces of interaction at the contact points between the rotors. The flow displaced by the unit is evaluated using a lumped parameter model whereas the lubricating gaps are evaluated by solving the Reynolds Equation. The main novel aspects consist of the evaluation of the frictional losses at various interfaces. An Elasto-Hydrodynamic Lubrication (EHL) approach is used to evaluate the frictional losses at the contact points between the rotors. Tests on a prototype Gerotor unit are performed for the model validation, particularly as pertains to the features of the shaft torque. Additionally, the paper comments on the distribution of the different torque loss contributions associated with the operation of the unit taken as reference.
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Geraldes. "MEMS Varifocal Mirror for High-Power Laser Focusing." Doctoral thesis, 2019. http://hdl.handle.net/11562/994700.

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Today, lasers are used in many surgical procedures due to their ability of performing precise incisions, and ablations. With the development of fiber-coupled lasers, even minimally invasive procedures started making use of laser tools. However, existing fiber tools do not provide the same performance as traditional laser systems, often causing significantly more tissue carbonization. This can be attributed to the lack of optics in fiber tools, which requires the tip of the fiber to be placed in direct contact with the tissue, increasing the collateral damage of the laser. To avoid this issue, a compact focusing system should be integrated in the fiber tool. However, traditional optical systems based on moving lenses are too large and bulky for that. To solve this problem, this thesis proposes a focusing system based on MEMS deformable mirrors. Using microfabrication methods, we develop a novel MEMS varifocal mirror, designed for focusing high-power laser in a fiber laser system. The design of this mirror is based on state-of-the-art MEMS deformable mirrors, which have been proposed for microscopy applications, with significant adaptations for high-power lasers, including different actuation mechanisms and control strategies. We explore the use of hydraulic actuation to achieve large focal length range, while providing compatibility with high-power laser. The deflection of the mirror is controlled using a feed-forward model, in which parameters are obtained through characterization of the fabrication process. This allows controlling the mirror without a beam splitter or external sensors, which contributes to the miniaturization of the focusing system.
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Books on the topic "Ink−powder interactions"

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Classroom power relations: Understanding student-teacher interaction. Mahwah, N.J: Lawrence Erlbaum Associates, 1997.

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The interaction of high-power lasers with plasmas. Bristol: Institute of Physics Publishing, 2002.

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Ruth Herman Wells, M.S. Personal power: Succeeding with others : peer interaction skills. Austin, Tex: PRO-ED, 1990.

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Anca, Metiu, ed. The power of writing in organizations: From letters to online interactions. New York, NY: Brunner-Routledge, 2012.

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Fayard, Anne-Laure. The power of writing in organizations: From letters to online interactions. New York, NY: Brunner-Routledge, 2012.

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The ethnography of empowerment: The transformative power of classroom interaction. Washington, D.C: Falmer Press, 1994.

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Getting things done at work: The discourse of power in workplace interaction. Amsterdam: John Benjamins, 2003.

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Adler, Patricia A. Peer power: Preadolescent culture and identity. New Brunswick, N.J: Rutgers University Press, 1998.

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Adler, Patricia A. Peer power: Preadolescent culture and identity. New Brunswick, N.J: Rutgers University Press, 1998.

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Aedes am Pfefferberg (Berlin, Germany), ed. Office for Visual Interaction: Lighting design : lighting powers of 10. Berlin: Aedes, 2010.

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Book chapters on the topic "Ink−powder interactions"

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Kryk-Kastovsky, Barbara. "Power in Early Modern English courtroom discourse." In Discourses in Interaction, 153–72. Amsterdam: John Benjamins Publishing Company, 2010. http://dx.doi.org/10.1075/pbns.203.13kry.

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Padiyar, K. R. "Interactions with Power System Stabilizer." In Analysis of Subsynchronous Resonance in Power Systems, 121–36. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5633-6_5.

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Weigand, Edda. "Games of power." In Negotiation and Power in Dialogic Interaction, 63–76. Amsterdam: John Benjamins Publishing Company, 2001. http://dx.doi.org/10.1075/cilt.214.06wei.

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Padiyar, K. R. "Interactions with Shunt Compensators." In Analysis of Subsynchronous Resonance in Power Systems, 169–204. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5633-6_7.

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Padiyar, K. R. "Interactions with Series Compensators." In Analysis of Subsynchronous Resonance in Power Systems, 205–38. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5633-6_8.

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Padiyar, K. R. "Interactions with HVDC Converter Control." In Analysis of Subsynchronous Resonance in Power Systems, 137–68. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5633-6_6.

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Romero, F., Vicente Amigó, M. D. Salvador, and A. Vicente. "Interactions in Titanium Matrix Composites Reinforced by Titanium Compounds by Conventional PM Route." In Progress in Powder Metallurgy, 817–20. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.817.

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Fleck, N. A. "Development of Anisotropy in Powder Compaction." In IUTAM Symposium on Microstructure-Property Interactions in Composite Materials, 101–12. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0059-5_9.

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Fraser, Bruce. "The mediator as power broker." In Negotiation and Power in Dialogic Interaction, 19–37. Amsterdam: John Benjamins Publishing Company, 2001. http://dx.doi.org/10.1075/cilt.214.04fra.

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Zacek, V. "Neutrino Oscillation Experiments at Nuclear Power Reactors." In Weak and Electromagnetic Interactions in Nuclei, 750–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71689-8_147.

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Conference papers on the topic "Ink−powder interactions"

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Li, Xuxiao, and Wenda Tan. "Numerical Modeling of Powder Gas Interaction for Laser Powder Bed Fusion Process." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8302.

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Abstract The powder motion induced by the gas flow has been identified as one of the critical phenomena in laser powder bed fusion processes that significantly affects the build quality. However, the gas dynamics and its induced driving forces for the powder motions have not been well quantified. A numerical model is developed to investigate such powder-gas interactions. With a combination of computational fluid dynamics and particle tracking techniques, the model is capable of simulating the transient gas flow field surrounding the powder and the forces exerted on powder surfaces. The interaction between metal powders and a free jet is investigated with the current model. In the simulation results, the entrainment and the ejection motions of powders with respect to the free jet can be predicted. It is found that the driving forces of these motions are majorly contributed by the pressure differences in the gas flow surrounding the powder, and the powders can also interact with the jet to significantly alter the flow field. Quantities which are difficult to measure by experiments are quantified by the simulations, such as the velocity and pressure field in the gas, as well as the subjected forces and torques of powders. Such quantitative information provides insights to the mechanisms of the powder-gas interaction in laser powder bed fusion processes.
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Myra, J. R. "Nonlinear ICRF-Plasma Interactions." In RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas. AIP, 2005. http://dx.doi.org/10.1063/1.2098187.

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Narayanan, Chidambaram, and Djamel Lakehal. "Four-Way Coupling of Dense Particle Beds of Black Powder in Turbulent Pipe Flows." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30137.

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The modeling of particle deposition and transport in pipes is one of the most challenging problems in multiphase flow, because the underlying physics is multi-faceted and complex, including turbulence of the carrier phase, particle-turbulence interaction, particle-wall interactions, particle-particle interactions, two-way and four-way couplings, particle agglomeration, deposition and re-suspension. We will discuss these issues and present new routes for the modeling of particle collision stress. Practical examples like black powder deposition and transport in gas pipelines will be presented and discussed. The model employed is based on dense-particle formulation accounting for particle-turbulence interaction, particle-wall interactions, particle-particle interactions via a collision stress. The model solves the governing equations of the fluid phase using a continuum model and those of the particle phase using a Lagrangian model. Inter-particle interactions for dense particle flows with high volume fractions (from 1% to close packing ∼60%) have been accounted for by mapping particle properties to an Eulerian grid and then mapping back computed stress tensors to particle positions. Turbulence within the continuum gas field was simulated using the V-LES (Very Large-Eddy Simulation) and full LES, which provides sufficient flow unsteadiness needed to disperse the particles and move the deposited bed.
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D’Ippolito, D. A. "Integrated Codes for ICRF-Edge Plasma Interactions." In RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas. AIP, 2005. http://dx.doi.org/10.1063/1.2098229.

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Sabini, J. P., N. Finlayson, C. T. Seaton, and G. I. Stegeman. "All-Optical Switching in X-Junctions." In Nonlinear Guided-Wave Phenomena. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/nlgwp.1989.fd2.

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The potential use of nonlinear waveguide devices for ultrafast signal processing leads to a growing interest in their switching characteristics. Given the two main advantages of guided wave optics over bulk optics for nonlinear interactions, i.e. the high power densities achievable in waveguides at low absolute powers and diffractionless propagation of the light over long interaction lengths, the use of relatively weak nonlinearities becomes possible. Standard integrated optical devices can be operated in an all-optical mode by using materials exhibiting intensity-dependent refractive indices.
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Hackel, Lloyd A. "Development of high power lasers for materials interactions." In Frontiers in Optics. Washington, D.C.: OSA, 2003. http://dx.doi.org/10.1364/fio.2003.tud1.

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Van Zante, Dale E., Wai-Ming To, and Jen-Ping Chen. "Blade Row Interaction Effects on the Performance of a Moderately Loaded NASA Transonic Compressor Stage." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30575.

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Blade row interaction effects on loss generation in compressors have received increased attention as compressor work-per-stage and blade loading have increased. Two dimensional Laser Doppler Velocimeter measurements of the velocity field in a NASA transonic compressor stage show the magnitude of interactions in the velocity field at the peak efficiency and near stall operating conditions. The experimental data are presented along with an assessment of the velocity field interactions. In the present study the experimental data are used to confirm the fidelity of a three-dimensional, time-accurate, Navier Stokes calculation of the stage using the MSU-TURBO code at the peak efficiency and near stall operating conditions. The simulations are used to quantify the loss generation associated with interaction phenomena. At the design point the stator pressure field has minimal effect of the rotor performance. The rotor wakes do have an impact on loss production in the stator passage at both operating conditions. A method for determining the potential importance of blade row interactions on performance is presented.
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Majeski, R., P. Probert, T. Tanaka, D. Diebold, R. Breun, M. Doczy, R. Fonck, et al. "Rf Edge Interactions and Insulating Limiters in Phaedrus-T." In Radio frequency power in plasmas. AIP, 1992. http://dx.doi.org/10.1063/1.41674.

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Miller, R. J., R. W. Moss, R. W. Ainsworth, and N. W. Harvey. "Wake, Shock and Potential Field Interactions in a 1.5 Stage Turbine: Part I — Vane-Rotor and Rotor-Vane Interaction." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30435.

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The composition of the time-resolved surface pressure field around a high-pressure rotor blade caused by the presence of neighboring blade rows is investigated, with the individual effects of wake, shock and potential field interaction being determined. Two test geometries are considered: first, a high-pressure turbine stage coupled with a swan-necked diffuser exit duct; secondly, the same high-pressure stage but with a vane located in the downstream duct. Both tests were conducted at engine-representative Mach and Reynolds numbers, and experimental data was acquired using fast-response pressure transducers mounted on the mid-height streamline of the HP rotor blades. The results are compared to time-resolved computational predictions of the flowfield in order to aid interpretation of experimental results and to determine the accuracy with which the computation predicts blade interaction. The paper is split into two parts, the first investigating the effect of the upstream vane on the unsteady pressure field around the rotor (vane-rotor interaction) and the second investigating the effect of the downstream vane on the unsteady pressure field around the rotor (rotor-vane interaction). The paper shows that at typical design operating conditions shock interaction from the upstream blade row is an order of magnitude greater than wake interaction and that with the design vane-rotor inter-blade gap the presence of the rotor causes a periodic increase in the strength of the vane trailing edge shock. The presence of the potential field of the downstream vane is found to affect significantly the rotor pressure field downstream of the Mach one surface within each rotor passage.
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Chu, Xin, Stephen Yue, and Phuong Vo. "A Study of the Mixed Powders Interaction Behavior Upon Impact in Cold Spray." In ITSC2019, edited by F. Azarmi, K. Balani, H. Koivuluoto, Y. Lau, H. Li, K. Shinoda, F. Toma, J. Veilleux, and C. Widener. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.itsc2019p0853.

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Abstract In this study, two sizes of iron and stainless steel powders were binarily mixed into four groups with different weight percent fractions and the various mixtures and single-component powders were cold sprayed onto aluminum substrates. The deposition efficiencies (DE) of the powder mixtures and single-component powders were measured and are compared. The results show that the four binary mixtures exhibit different DE characteristics as a function of stainless steel wt% and that the small size mixtures have higher DE relative to the single-component iron powder. The difference is explained by particle-particle interactions (tamping and retention) that occur upon impact and only in the small size mixtures. The study also finds that changing spray parameters, such as feed rate, stand-off distance, gun travel speed, and gas temperature and pressure, has no effect on particle-particle interactions.
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Reports on the topic "Ink−powder interactions"

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Boiteux, Y. P. Interaction in polysilazane/SiC powder systems. Office of Scientific and Technical Information (OSTI), July 1992. http://dx.doi.org/10.2172/7000107.

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Kisner, Roger A., James Allen Mullens, Thomas L. Wilson, Richard Thomas Wood, Kofi Korsah, A. L. Qualls, Michael David Muhlheim, David Eugene Holcomb, and Andy Loebl. Safety and Nonsafety Communications and Interactions in International Nuclear Power Plants. Office of Scientific and Technical Information (OSTI), August 2007. http://dx.doi.org/10.2172/931809.

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Hatipoglu, Emre, Brian Efird, and Saleh Al Muhanna. Spatial Modeling of Bargaining Among Stakeholders in Energy Policy: The Case of Japanese Nuclear Plants. King Abdullah Petroleum Studies and Research Center, February 2023. http://dx.doi.org/10.30573/ks--2022-dp10.

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This paper evaluates the evolving political will in Japan to restart nuclear power plants to generate electric power, in light of the country’s political and economic developments over the past few years. We apply a model of collective decision-making processes (CDMPs), using the KAPSARC Toolkit for Behavioral Analysis (KTAB), to simulate the interactions among different interest groups including policymakers, national and local political leaders, electricity companies, and the public, given their varying interests, goals and priorities.
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Thatcher, D. F. Regulatory analysis for resolution of USI A-17: Systems interactions in nuclear power plants. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/5994461.

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KNYAZEVA, V., A. BILYALOVA, and E. IBRAGIMOVA. INTERTEXT AS A LEXICAL AND SEMANTIC TOOL OF SUGGESTION. Science and Innovation Center Publishing House, 2022. http://dx.doi.org/10.12731/2077-1770-2022-14-2-3-39-49.

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An article describes intertextuality as a lexico-semantic tool of linguistic suggestion and examines its ability to constitute manipulative power of authority within political media discourse. Following a thorough study of linguopragmatics and suggestive linguistics from the perspective of their theoretical grounds, we aimed to classify lexico-semantic tools, which could enable an authority to become a manipulative power of political media texts. Intertextuality caught our attention as an element of the aforementioned classification. The phenomenon representing overlap and interaction of several texts is backed up by recent examples gathered from some Russian and foreign Internet periodicals. Being sub-types of intertextuality Allusion and Quotation were highlighted in the research.
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Shen, Chen. Modeling Creep-Fatigue-Environment Interactions in Steam Turbine Rotor Materials for Advanced Ultra-supercritical Coal Power Plants. Office of Scientific and Technical Information (OSTI), April 2014. http://dx.doi.org/10.2172/1134364.

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Thatcher, D. Evaluation of systems interactions in nuclear power plants: Technical findings related to Unresolved Safety Issue A-17. Office of Scientific and Technical Information (OSTI), May 1989. http://dx.doi.org/10.2172/6269979.

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Teye, Joseph Kofi, and Ebenezer Nikoi. The Political Economy of the Cocoa Value Chain in Ghana. Institute of Development Studies (IDS), March 2021. http://dx.doi.org/10.19088/apra.2021.007.

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The cocoa sector has, historically, been the backbone of the Ghanaian economy. Many households depend directly on the cocoa sector for livelihoods, and aspects of the cocoa industry, such as input supplies to farmers and cocoa pricing, have historically featured prominently in national and local politics. This paper examines the basic underlying political economy dynamics of the cocoa value chain, with particular focus on how the interests, powers and interactions of various actors along the value chain have contributed to agricultural commercialisation in Ghana. The paper also explores the challenges affecting the cocoa value chain, social difference within the chain, and how various segments of the cocoa value chain have been affected by the COVID-19 pandemic in Ghana since March 2020.
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Nusinovich, Gregory S. Wave and Mode Interaction in Overmoded High-Power Amplifiers of Short-Wavelength Radiation (from W-band up to THz). Fort Belvoir, VA: Defense Technical Information Center, June 2012. http://dx.doi.org/10.21236/ada578535.

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Elroy-Stein, Orna, and Dmitry Belostotsky. Mechanism of Internal Initiation of Translation in Plants. United States Department of Agriculture, December 2010. http://dx.doi.org/10.32747/2010.7696518.bard.

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Original objectives Elucidation of PABP's role in crTMV148 IRES function in-vitro using wheat germ extract and krebs-2 cells extract. Fully achieved. Elucidation of PABP's role in crTMV148 IRES function in-vivo in Arabidopsis. Characterization of the physical interactions of PABP and other potential ITAFs with crTMV148 IRES. Partly achieved. To conduct search for additional ITAFs using different approaches and evaluate the candidates. Partly achieved. Background of the topic The power of internal translation via the activity of internal ribosomal entry site (IRES) elements allow coordinated synthesis of multiple gene products from a single transcription unit, and thereby enables to bypass the need for sequential transformation with multiple independent transgenes. The key goal of this project was to identify and analyze the IRES-trans-acting factors (ITAFs) that mediate the activity of a crucifer-infecting tobamovirus (crTMV148) IRES. The remarkable conservation of the IRES activity across the phylogenetic spectrum (yeast, plants and animals) strongly suggests that key ITAFs that mediate its activity are themselves highly conserved. Thus, crTMV148 IRES offers opportunity for elucidation of the fundamental mechanisms underlying internal translation in higher plants in order to enable its rational manipulation for the purpose of agricultural biotechnology. Major conclusions and achievements. - CrTMV IRES requires PABP for maximal activity. This conclusion was achieved by PABP depletion and reconstitution of wheat germ- and Krebs2-derived in-vitro translation assays using Arabidopsis-derived PABP2, 3, 5, 8 and yeast Pab1p. - Mutations in the internal polypurine tract of the IRES decrease the high-affinity binding of all phylogenetically divergent PABPs derived from Arabidopsis and yeast in electro mobility gel shift assays. - Mutations in the internal polypurine tract decrease IRES activity in-vivo. - The 3'-poly(A) tail enhances crTMV148 IRES activity more efficiently in the absence of 5'-methylated cap. - In-vivo assembled RNPs containing proteins specifically associated with the IRES were purified from HEK293 cells using the RNA Affinity in Tandem (RAT) approach followed by their identification by mass spectroscopy. - This study yielded a list of potential protein candidates that may serve as ITAFs of crTMV148 IRES activity, among them are a/b tubulin, a/g actin, GAPDH, enolase 1, ribonuclease/angiogenin inhibitor 1, 26S proteasome subunit p45, rpSA, eEF1Bδ, and proteasome b5 subunit. Implications, both scientific and agriculture. The fact that the 3'-poly(A) tail enhances crTMV148 IRES activity more efficiently in the absence of 5'-methylated cap suggests a potential joint interaction between PABP, the IRES sequence and the 3'-poly(A). This has an important scientific implication related to IRES function in general.
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