Journal articles: 'Domaine incliné'

1

Subramanian, Priya, Oliver Brausch, Karen E. Daniels, Eberhard Bodenschatz, Tobias M. Schneider, and Werner Pesch. "Spatio-temporal patterns in inclined layer convection." Journal of Fluid Mechanics 794 (April 6, 2016): 719–45. http://dx.doi.org/10.1017/jfm.2016.186.

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This paper reports on a theoretical analysis of the rich variety of spatio-temporal patterns observed recently in inclined layer convection at medium Prandtl number when varying the inclination angle ${\it\gamma}$ and the Rayleigh number $R$. The present numerical investigation of the inclined layer convection system is based on the standard Oberbeck–Boussinesq equations. The patterns are shown to originate from a complicated competition of buoyancy driven and shear-flow driven pattern forming mechanisms. The former are expressed as longitudinal convection rolls with their axes oriented parallel to the incline, the latter as perpendicular transverse rolls. Along with conventional methods to study roll patterns and their stability, we employ direct numerical simulations in large spatial domains, comparable with the experimental ones. As a result, we determine the phase diagram of the characteristic complex 3-D convection patterns above onset of convection in the ${\it\gamma}{-}R$ plane, and find that it compares very well with the experiments. In particular we demonstrate that interactions of specific Fourier modes, characterized by a resonant interaction of their wavevectors in the layer plane, are key to understanding the pattern morphologies.

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Krawczyszyn, J. "Movement of the cambial domain pattern and mechanism of formation of interlocked grain in Platanus." Acta Societatis Botanicorum Poloniae 41, no. 4 (2015): 443–61. http://dx.doi.org/10.5586/asbp.1972.036.

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The orientation of splitting and uniting of rays, which served as an indicator of the orientation of morphogenic events occurring in cambium, was determined on series of veneers covering large tangential faces of <i>Platanus</i> trunks. It has been shown that cambium consists of orientational domains of Z- and S-type. They are perpendicular to, or slightly inclined with respect to, the trunk axis. Axial dimensions of domains are 8-28 cm. They move upward along the trunk, at a rate 6,5—12 mm, per radial mm of xylem porduced. Migration domain patterns are responsible for the formation of the interlocked grain.

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Stoilova-McPhie, Svetla, Bruno O. Villoutreix, Koen Mertens, Geoffrey Kemball-Cook, and Andreas Holzenburg. "3-Dimensional structure of membrane-bound coagulation factor VIII: modeling of the factor VIII heterodimer within a 3-dimensional density map derived by electron crystallography." Blood 99, no. 4 (February 15, 2002): 1215–23. http://dx.doi.org/10.1182/blood.v99.4.1215.

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Despite recent studies, the organization of coagulation factor VIII (FVIII) on a phospholipid (PL) membrane is not known in detail. Thus, 2-dimensional (2D) crystals of human FVIII lacking the B domain were prepared for electron microscopy onto negatively charged PL monolayers. The 3-dimensional (3D) density map of the PL-bound FVIII protein was calculated at 1.5 nm. Existing atomic data and models for FVIII domains were fitted unambiguously within the 3D density map of the molecule. FVIII domains arrangement followed a compact spiral organization with the A3 domains in close association with the C1 and C2 domains near the PL surface. Viewed toward the membrane the A domains' heterotrimer is oriented side-on with the pseudo–3-fold axis almost parallel to the PL surface and A1 fully covering C1. The C2 domain is partially overlapped by the A2 domain of an adjacent molecule in the 2D crystal, favoring close packing. Viewed parallel to the membrane, C2 is slightly inclined to the PL surface covering an area of 12 nm2. Four C2 loops are embedded within the lipid monolayer at about 0.7 to 1.0 nm depth. C1 forms almost a right angle with C2, its long axis nearly parallel to the membrane. The proposed structure for membrane-bound FVIII results from modeling of the FVIII domains within a 3D density map obtained from electron crystallography and accords with the main biochemical and structural information known to date. A model is proposed for FVIIIa and factor IXa assembly within the membrane-bound factor X-activating complex.

4

Denneulin, T., and A. S. Everhardt. "A transmission electron microscopy study of low-strain epitaxial BaTiO₃ grown onto NdScO₃." Journal of Physics: Condensed Matter 34, no. 23 (April 5, 2022): 235701. http://dx.doi.org/10.1088/1361-648x/ac5db3.

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Abstract Ferroelectric materials exhibit a strong coupling between strain and electrical polarization. In epitaxial thin films, the strain induced by the substrate can be used to tune the domain structure. Substrates of rare-earth scandates are sometimes selected for the growth of ferroelectric oxides because of their close lattice match, which allows the growth of low-strain dislocation-free layers. Transmission electron microscopy (TEM) is a frequently used technique for investigating ferroelectric domains at the nanometer-scale. However, it requires to thin the specimen down to electron transparency, which can modify the strain and the electrostatic boundary conditions. Here, we have investigated a 320 nm thick epitaxial layer of BaTiO3 grown onto an orthorhombic substrate of NdScO3 with interfacial lattice strains of −0.45% and −0.05% along the two in-plane directions. We show that the domain structure of the layer can be significantly altered by TEM sample preparation depending on the orientation and the geometry of the lamella. In the as-grown state, the sample shows an anisotropic a/c ferroelastic domain pattern in the direction of largest strain. If a TEM lamella is cut perpendicular to this direction so that strain is released, a new domain pattern is obtained, which consists of bundles of thin horizontal stripes parallel to the interfaces. These stripe domains correspond to a sheared crystalline structure (orthorhombic or monoclinic) with inclined polarization vectors and with at least four variants of polarization. The stripe domains are distributed in triangular-shaped 180° domains where the average polarization is parallel to the growth direction. The influence of external electric fields on this domain structure was investigated using in situ biasing and dark-field imaging in TEM.

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Limebeer, D. J. N., R. S. Sharp, and S. Evangelou. "The stability of motorcycles under acceleration and braking." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 215, no. 9 (September 1, 2001): 1095–109. http://dx.doi.org/10.1177/095440620121500910.

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A comprehensive study of the effects of acceleration and braking on motorcycle stability is presented. This work is based on a modified version of a dynamic model presented earlier, and is thought to be the most comprehensive motorcycle dynamic model in the public domain. Extensive use is made of both non-linear and linearized models. The models are written in LISP and make use of the multibody modelling package AUTOSIM. There is novelty in the way in which control systems have been used to control the motorcycle drive and braking systems in order that the machine maintains desired rates of acceleration and deceleration. The results show that the wobble mode of a motorcycle is significantly destabilized when the machine is descending an incline or braking on a level surface. Conversely, the damping of the wobble mode is substantially increased when the machine is ascending an incline at constant speed, or accelerating on a level surface. This probably accounts for the pleasingly stable ‘feel’ of the machine under firm acceleration. Except at very low speeds, inclines, acceleration and deceleration appear to have little effect on the damping or frequency of the weave mode. Non-linear simulations have quantified the known difficulties to do with rear tyre adhesion in heavy braking situations that are dominated by rear wheel braking.

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Bahmyari, E., S. R. Mohebpour, and P. Malekzadeh. "Vibration Analysis of Inclined Laminated Composite Beams under Moving Distributed Masses." Shock and Vibration 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/750916.

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The dynamic response of laminated composite beams subjected to distributed moving masses is investigated using the finite element method (FEM) based on the both first-order shear deformation theory (FSDT) and the classical beam theory (CLT). Six and ten degrees of freedom beam elements are used to discretize the CLT and FSDT equations of motion, respectively. The resulting spatially discretized beam governing equations including the effect of inertial, Coriolis, and centrifugal forces due to moving distributed mass are evaluated in time domain by applying Newmark’s scheme. The presented approach is first validated by studying its convergence behavior and comparing the results with those of existing solutions in the literature. Then, the effect of incline angle, mass, and velocity of moving body, layer orientation, load length, and inertial, Coriolis, and centrifugal forces due to the moving distributed mass and friction force between the beam and the moving distributed mass on the dynamic behavior of inclined laminated composite beams are investigated.

7

Sementsov, D. I. "Diffraction of Light from Stripe Domain Structure with Inclined Domain Boundaries." Crystallography Reports 45, no. 6 (November 2000): 995. http://dx.doi.org/10.1134/1.1327666.

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Darinskii, B. M., and V. V. Gorbynov. "Instability of inclined 180° domain boundary in ferroelectrics." Ferroelectrics 98, no. 1 (October 1989): 235–40. http://dx.doi.org/10.1080/00150198908217584.

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Nakai, Tomoo. "Magnetic Domain Transition of Adjacent Narrow Thin Film Strips with Inclined Uniaxial Magnetic Anisotropy." Micromachines 11, no. 3 (March 8, 2020): 279. http://dx.doi.org/10.3390/mi11030279.

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This study deals a phenomenon of magnetic domain transition for the stepped magneto-impedance element. Our previous research shows that an element with 70° inclined easy axis has a typical characteristic of the domain transition, and the transition can be controlled by the normal magnetic field. In this paper, we apply this phenomenon and controlling method to the line arrangement adjacent to many body elements, in which mutual magnetic interaction exists. The result shows that the hidden inclined Landau–Lifshitz domain appears by applying a distributed normal field the same as an individual element.

10

Li, Haiyan, Zanxia Cao, Guodong Hu, Liling Zhao, Chunling Wang, and Jihua Wang. "Ligand-induced structural changes analysis of ribose-binding protein as studied by molecular dynamics simulations." Technology and Health Care 29 (March 25, 2021): 103–14. http://dx.doi.org/10.3233/thc-218011.

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BACKGROUND: The ribose-binding protein (RBP) from Escherichia coli is one of the representative structures of periplasmic binding proteins. Binding of ribose at the cleft between two domains causes a conformational change corresponding to a closure of two domains around the ligand. The RBP has been crystallized in the open and closed conformations. OBJECTIVE: With the complex trajectory as a control, our goal was to study the conformation changes induced by the detachment of the ligand, and the results have been revealed from two computational tools, MD simulations and elastic network models. METHODS: Molecular dynamics (MD) simulations were performed to study the conformation changes of RBP starting from the open-apo, closed-holo and closed-apo conformations. RESULTS: The evolution of the domain opening angle θ clearly indicates large structural changes. The simulations indicate that the closed states in the absence of ribose are inclined to transition to the open states and that ribose-free RBP exists in a wide range of conformations. The first three dominant principal motions derived from the closed-apo trajectories, consisting of rotating, bending and twisting motions, account for the major rearrangement of the domains from the closed to the open conformation. CONCLUSIONS: The motions showed a strong one-to-one correspondence with the slowest modes from our previous study of RBP with the anisotropic network model (ANM). The results obtained for RBP contribute to the generalization of robustness for protein domain motion studies using either the ANM or PCA for trajectories obtained from MD.

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Cardoso, Remy, Vitor Parola, Hugo Neves, Rafael A. Bernardes, Filipa Margarida Duque, Carla A. Mendes, Mónica Pimentel, et al. "Physical Rehabilitation Programs for Bedridden Patients with Prolonged Immobility: A Scoping Review." International Journal of Environmental Research and Public Health 19, no. 11 (May 25, 2022): 6420. http://dx.doi.org/10.3390/ijerph19116420.

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Bedridden patients usually stay in bed for long periods, presenting several problems caused by immobility, leading to a long recovery process. Thus, identifying physical rehabilitation programs for bedridden patients with prolonged immobility requires urgent research. Therefore, this scoping review aimed to map existing physical rehabilitation programs for bedridden patients with prolonged immobility, the rehabilitation domains, the devices used, the parameters accessed, and the context in which these programs were performed. This scoping review, guided by the Joanna Briggs Institute’s (JBI) methodology and conducted in different databases (including grey literature), identified 475 articles, of which 27 were included in this review. The observed contexts included research institutes, hospitals, rehabilitation units, nursing homes, long-term units, and palliative care units. Most of the programs were directed to the musculoskeletal domain, predominantly toward the lower limbs. The devices used included lower limb mobilization, electrical stimulation, inclined planes, and cycle ergometers. Most of the evaluated parameters were musculoskeletal, cardiorespiratory, or vital signs. The variability of the programs, domains, devices and parameters found in this scoping review revealed no uniformity, a consequence of the personalization and individualization of care, which makes the development of a standard intervention program challenging.

12

Nevskii, Yu A., and A. N. Osiptsov. "Slow gravitational convection of disperse systems in domains with inclined boundaries." Fluid Dynamics 46, no. 2 (April 2011): 225–39. http://dx.doi.org/10.1134/s0015462811020050.

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Su, Yan. "Numerical Researches of Rectangular Barge in Variable Bathymetry Based on Boussinesq-Step Method." Advances in Civil Engineering 2022 (August 18, 2022): 1–9. http://dx.doi.org/10.1155/2022/2209394.

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Wave responses of the rectangular barge in variable bathymetry are investigated by combining the Boussinesq-type equations and the step method. The highly accurate Boussinesq-type equations in terms of velocity potential are adopted for simulating the evolution of waves along the inclined beach. Hydrodynamic coefficients of a rectangular barge floating on the inclined bottom are calculated by the step method in the frequency domain. Based on the impulse response function method, the motions of the barge can be predicted in the time domain. The Haskind relation is used to reform the wave exciting forces, and the mean offset in the sway motion is also given based on the mean drift force. The wave responses of the barge at different locations along the inclined beach are measured in the experiments. Compared with experimental results, the solutions of the Boussinesq-step method present an overall good agreement.

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Valera Sifontes, Rimary, Hédison Kiuity Sato, and Zoukaneri Ibrahim Moumoni. "Relief geometric effects on frequency-domain electromagnetic data." GEOPHYSICS 81, no. 5 (September 2016): E287—E296. http://dx.doi.org/10.1190/geo2015-0344.1.

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A perpendicular transmitter-receiver coils arrangement used in the frequency-domain electromagnetic survey can have deviations in relation to its standard geometric definition due to the relief geometry of the surveyed area when combined with large transmitter-receiver distance and large transmitter loop size. This happens because the local relief characteristics along the transmitter loop wire laid on the ground can deviate the equivalent magnetic moment axis from the vertical, and the global characteristics locate the transmitter and receiver positions at different elevations. A study about that is carried on here substituting the rugged relief by an inclined plane. We have developed a new formulation for the [Formula: see text]-layered model that allowed us to investigate the relief geometry effects on FDEM data but restricting the analysis to the two-layer earth model, considering three cases of transmitter-receiver situations controlled by the relief conditions. The curves representing the Argand diagram and the apparent polarization parameter as a function of the apparent induction number were obtained for each relief model. Such procedures resulted to be very useful to demonstrate their behavior departing from those curves obtained for an inclined and a horizontal ground. These results show that small deviations in the verticality of the transmitter loop axis or in the horizontality of the surficial plane causes significant deviations, even for angles as small as 1°.

15

Liu, Jing Shi, Ya Zhou Sun, Li Hua Lu, and Ying Chun Liang. "Manufacturing Errors Effects on Disturbing Torque of Aerostatic Bearings." Applied Mechanics and Materials 16-19 (October 2009): 505–9. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.505.

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In order to improve the drifting accuracy of aerostatic bearings, the manufacturing errors effects on disturbing torque of aerostatic bearings is studied by using the finite element method. The finite element mathematic model of the major influence factors of disturbing torque is established. Then, the finite element equation in the gas film domain is solved and the disturbing torque in the presence of disturbing factors is calculated. The research focuses on elliptical error and prismatic error of journal and incline error of throttle slit. The setting angle of journal, incline position angle of throttle slit and radial eccentricity ratio which affect the disturbing torque is also studied. The results show that roundness error of journal and incline error of throttle slit affect the disturbing torque significantly, that is the greater roundness error of journal and incline error of throttle slit the greater disturbing torque. Disturbing torque is periodic function of setting angle of journal and incline position angle of throttle slit. Radial eccentricity ratio affects the disturbing torque, and there is specific radial eccentricity ratio makes disturbing torque to be extreme point or zero point. In the research, the theoretical disturbing torque value is compared with the experimental value of a certain aerostatic bearing, find that they are on the whole accordant with each other and then prove that the finite element model and the method use to solve the problem is correct. The research is of great significance for designing, manufacturing and assembling aerostatic bearings and for performance prediction of aerostatic bearings.

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Lazoglu, Ismail, and Steven Y. Liang. "Modeling of Ball-End Milling Forces With Cutter Axis Inclination." Journal of Manufacturing Science and Engineering 122, no. 1 (February 1, 1999): 3–11. http://dx.doi.org/10.1115/1.538885.

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In the machining of sculpture surfaces with ball-end mill, the cutter axis or workpiece is often inclined to generate an admissible orientation. This paper primarily presents an enhanced cutting force model for ball-end milling with cutter axis inclination. It involves the kinematic reasoning of cutting edge geometry, local helix angle and average chip thickness followed by the analysis of effects of axis inclination in the contact zone between cutter and workpiece. Thereupon, development of the analytical force model for inclined-axis machining is achieved using cutter angle domain convolution method. Experimental evaluation of the model is discussed, and experimental results and model predictions under various cutting conditions are compared in the frequency as well as in the angular domain. [S1087-1357(00)70601-0]

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Topolov, V. Yu, and A. V. Turik. "Electromechanical constants and their anisotropy in -type crystals having inclined domain walls." Journal of Physics: Condensed Matter 10, no. 2 (January 19, 1998): 451–59. http://dx.doi.org/10.1088/0953-8984/10/2/024.

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Socolowsky, Jürgen. "ON A TWO-FLUID INCLINED FILM FLOW WITH EVAPORATION." Mathematical Modelling and Analysis 18, no. 1 (February 1, 2013): 22–31. http://dx.doi.org/10.3846/13926292.2013.756434.

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This paper is concerned with a plane steady-state inclined film flow including evaporation effects. The motion is governed by a free boundary value problem for a coupled system of Navier–Stokes and Stefan equations. The flow domain is unbounded in two directions and it contains a geometrical perturbation on the inclined bottom. Existence and uniqueness of a suitable solution in weighted Sobolev spaces can be proved for small data (perturbation, inclination of the bottom) characterizing the problem.

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Boonloi, Amnart, and Withada Jedsadaratanachai. "Thermohydraulic Performance Improvement in Heat Exchanger Square Duct Inserted with 45° Inclined Square Ring." Modelling and Simulation in Engineering 2020 (January 13, 2020): 1–22. http://dx.doi.org/10.1155/2020/3862624.

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Thermal performance development, heat transfer structure, and flow behavior in the heat exchanger square duct equipped with a 45° inclined square ring are investigated numerically. The effects of flow blockage ratios and spacing ratios for the inclined square ring on fluid flow and heat transfer are considered. The Reynolds number (Re = 100–2000, laminar regime) based on the hydraulic diameter of the square duct is selected for the present work. The numerical domain of the square duct inserted with the 45° inclined square ring is solved with the finite volume method. The SIMPLE algorithm is picked for the numerical investigation. The heat transfer characteristics and flow topologies in the square duct inserted with the inclined square ring are plotted in the numerical report. The heat transfer rate, pressure loss, and efficiency for the square duct placed with the inclined square ring are presented in forms of Nusselt number, friction factor, and thermal enhancement factor, respectively. As the numerical results, it is detected that the heat transfer rate of the heat exchanger square duct inserted with the inclined square ring is around 1.00–10.05 times over the smooth duct with no inclined square ring. Additionally, the maximum thermal enhancement factor for the heat exchanger square duct inserted with the inclined square ring is around 2.84.

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Zhu, Chang Jiang, and Wen Kui Zheng. "Research of Potential Inclined Intrusion Data Mining Method in Large Network." Applied Mechanics and Materials 543-547 (March 2014): 2024–27. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.2024.

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Network intrusion is shown in more and more concealment, and some intrusion data is potential with inclination property. This paper is aimed to mine the potential inclined intrusion data effectively, and ensure the security of large network. On the basis of the traditional fractional Fourier transform data mining method. An improved potential inclined intrusion accurate data mining algorithm is proposed. New algorithm can separate the time and frequency coupling effectively. The discrete fractional Fourier transform is implemented for the network intrusion data firstly. The data is gathered in the fractional Fourier domain, the inclined intrusion data accumulation is increased. The network signal interference is suppressed effectively. Simulation results show that the proposed data mining algorithm can extract the potential inclined intrusion data in strong concealment. The mining performance is much better than the traditional algorithm, and it can be applied in the network security defense area perfectly.

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Sagdatkireeva, M. B., V. V. Rumyantseva, and N. A. Khasanov. "Characteristics of the Periodic Fine Structure in Domain Walls in Vacuum-Deposited Films." Solid State Phenomena 190 (June 2012): 518–21. http://dx.doi.org/10.4028/www.scientific.net/ssp.190.518.

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The characteristics of the periodic fine structure in domain walls in oblique-evaporated films of quantum-well (QW) thickness with an easy-magnetization axis inclined with respect to the normal to the film plane has been studied. It is pointed out that the self-organization of domain structures is related to the quantum character of the cooperative phenomenon of ferromagnetism [. The spectrum of magnetoelastic waves has been calculated for films of iron type.

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Veeraraghavan, Swetha, Justin L. Coleman, and Jacobo Bielak. "Simulation of site and topographic effects on ground motion in Los Alamos, NM mesas." Geophysical Journal International 220, no. 3 (December 12, 2019): 1504–20. http://dx.doi.org/10.1093/gji/ggz448.

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SUMMARY Mesas, which consist of an elevated area of land with a flat top and steep cliffs at the sides, are one of the common geological formations present in the Los Alamos region. Previous research has shown that geological formations such as sedimentary canyons can amplify soil response during earthquakes. There have also been parametric studies to understand the response of an idealized and isolated mountain/canyon under inclined plane waves. In this study, a 2-D linear anelastic soil domain, with topography modelled after the Los Alamos region with many mesas and canyons, is considered to understand site-specific topographic effects in the presence of non-isolated topographical features. Various earthquake sources configurations ranging from point sources to finite faults with varying rupture length, dip angles and spatial slip distributions are considered. To isolate the effect of topography, three other soil domains—a homogeneous half-space, homogeneous half-space with mesas and canyons, and a computational domain with just the soil properties from the Los Alamos region on a flat soil domain is also considered. 2-D site-response analyses of these soil domains under earthquake excitation show that the free-field response of the soil can be amplified or de-amplified depending on the topography of the region and the location of the station relative to the fault. These studies also show that even relatively small mesas with height less than 100 m can significantly amplify the response (by a factor of 2 or more), which differ from the much smaller amplification factors (≤1.2) specified by standard building codes such as Eurocode-8 (2000) for topographical features with a similar slope. De-amplifications are also fairly common, especially close to the canyons. The results from this study agree qualitatively with those from the ambient vibration study conducted by Stolte et al. on a mesa from the Los Alamos region. Thus, such site-specific studies provide important insights into the variability of the topographic amplification factors within a region of interest. Such knowledge is important in the design of safety-related critical infrastructure located within that region.

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Bialowolski, Piotr, and Dorota Weziak-Bialowolska. "What Does It Take to Be a Good Lawyer? The Underpinnings of Success in a Rapidly Growing Legal Market." Sustainability 13, no. 11 (May 22, 2021): 5841. http://dx.doi.org/10.3390/su13115841.

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The study identified the principal professional domains leading to success in legal professions. Based on a sample of 300 Polish attorneys, with the use of confirmatory factor analysis and 22 specific items, four principal domains of success were discerned—professional skills, marketing skills, reputation, and ethics. The evolution of these domains in Poland between 2005 and 2017 was examined, revealing that the importance of marketing skills significantly increased, while the remaining three domains lost importance over the study period. The results also indicated that legal professionals were more inclined to value professional skills, marketing skills, and ethics when their clients had an ability to measure the quality of legal service provided. The same domains transpired as important for lawyers, who attributed high importance to the role of the bar.

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Nursidi, Irwan. "Monolingual Development in Bilingual Family: Exploring Parental Language Policy within Family Domain." International Journal of Multicultural and Multireligious Understanding 6, no. 3 (June 17, 2019): 219. http://dx.doi.org/10.18415/ijmmu.v6i3.804.

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The existence of three possible languages within intermarriage family, for example Javanese and Sasaknese from their parents and Indonesian from their surrounding should have led children become bilingual in nature. However, the reversed condition is prevailing where the use of Indonesian is predominantly used. This research locates three different aspects of family language policy namely language ideology, language management and language practice. This research aims at finding out why parents of intermarriage family incline the use of one language within family domain. This research employed qualitative data in order to understand and interpret family language behaviour and uses multi staged purposive sampling. The sample was four of immigrant mothers and four of Sasak mothers. The result showed the tendency to use indonesian in a family domain is due to habitus which leads to culture capital and symbolic capital.

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Kim, Jeong-Seok, Bo Woo Nam, Kyong-Hwan Kim, Sewan Park, Seung Ho Shin, and Keyyong Hong. "A Numerical Study on Hydrodynamic Performance of an Inclined OWC Wave Energy Converter with Nonlinear Turbine–Chamber Interaction based on 3D Potential Flow." Journal of Marine Science and Engineering 8, no. 3 (March 6, 2020): 176. http://dx.doi.org/10.3390/jmse8030176.

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In this study, a time-domain numerical method based on three-dimensional potential flow was developed to analyze the hydrodynamic characteristics of an inclined oscillating-water-column (OWC) wave energy converter (WEC). A finite element method was applied to solve the potential flow around and inside the OWC chamber. A turbine–chamber interaction was considered to take into account the pressure drop inside the OWC chamber, which is a nonlinear function of airflow speed via turbine operation. The instantaneous pressure drop was updated on the free-surface boundary condition inside the chamber in the time-domain to account for the coupling effect between the turbine and the chamber. The present numerical method was verified by comparing it with the model test results. The hydrodynamic characteristics of an inclined OWC chamber in terms of potential flow, such as the water column motion and the three-dimensional flow distribution around the chamber, were investigated. In terms of hydrodynamic performance, the energy conversion efficiency of the chamber showed a nonlinear response characteristic dependent on the incident wave height. In addition, numerical calculations were carried out to clarify the relationship between the main geometric parameters and the hydrodynamic response of the inclined OWC chamber.

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Al-Farhany, Khaled, and A. Turan. "Double-Diffusive of Natural Convection in an Inclined Porous Square Domain Generalized Model." Al-Qadisiyah Journal for Engineering Sciences 12, no. 3 (September 30, 2019): 151–60. http://dx.doi.org/10.30772/qjes.v12i3.612.

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Numerical investigate of double-diffusive natural convection in an inclined porous square. Two opposing walls of the square cavity are adiabatic; while the other walls are, kept at constant concentrations and temperatures. The Darcy–Forchheimer–Brinkman model is used to solve the governing equations with the Boussinesq approximation. A code written in FORTRAN language developed to solve the governing equations in dimensionless forms using a finite volume approach with a SIMPLER algorithm. The results presented in U-velocity and V-velocity, isotherms, iso-concentration, streamline, the average Nusselt number, and the average Sherwood number for different values of the dimensionless parameters. A wide range of these parameters have been used including; Darcy Number, modified Rayleigh number, Lewis number, buoyancy ratio, and inclination angle. The results show that for opposite buoyancy ratio (N≤-1), the Nu decreases when the Le increases and the Sh increase when the Le increases. For an (N>0), the Nu increases when the Le increases until Le is equal to 1 and then it decreases, also Sh increases when the Le increases

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Nakai, T., H. Abe, and K. I. Arai. "Impedance-step phenomenon of thin-film GMI element with inclined magnetic stripe domain." Physics of Metals and Metallography 101, S1 (July 2006): S41—S44. http://dx.doi.org/10.1134/s0031918x06130138.

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Savchenkov, E. N., S. M. Shandarov, S. V. Smirnov, A. A. Esin, A. R. Akhmatkhanov, and V. Ya Shur. "Diffraction of Light on a Regular Domain Structure with Inclined Walls in MgO:LiNbO3." JETP Letters 110, no. 3 (August 2019): 178–82. http://dx.doi.org/10.1134/s0021364019150128.

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Yoshida, Hidefumi, Tsutomu Seino, and Yoshio Koike. "Four-Domain Divided Inclined Vertical Alignment by Irradiation of Unpolarized Ultra Violet Light." Japanese Journal of Applied Physics 36, Part 2, No. 11A (November 1, 1997): L1449—L1452. http://dx.doi.org/10.1143/jjap.36.l1449.

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Barletta, A., and M. Celli. "The Horton–Rogers–Lapwood problem for an inclined porous layer with permeable boundaries." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 474, no. 2217 (September 2018): 20180021. http://dx.doi.org/10.1098/rspa.2018.0021.

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A formulation of the Horton–Rogers–Lapwood problem for a porous layer inclined with respect to the horizontal and characterized by permeable (isobaric) boundary conditions is presented. This formulation allows one to recover the results reported in the literature for the limiting cases of horizontal and vertical layer. It is shown that a threshold inclination angle exists which yields an upper bound to a parametric domain where the critical wavenumber is zero. Within this domain, the critical Darcy–Rayleigh number can be determined analytically. The stability analysis is performed for linear perturbations. The solution is found numerically, for the inclination angles above the threshold, by employing a Runge–Kutta method coupled with the shooting method.

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Prato, A., F. Mazzoleni, and A. Schiavi. "Evaluation and correction of systematic effects in a simultaneous 3-axis vibration calibration system." ACTA IMEKO 9, no. 5 (December 31, 2020): 388. http://dx.doi.org/10.21014/acta_imeko.v9i5.1007.

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This paper presents a calibration method, recently realized at INRIM, suitable for the calibration of 3-axis accelerometers in frequency domain. The procedure, allows to simultaneously evaluate the main and transverse sensitivities on three axes by means of a single-axis vibration excitation of inclined planes. Nevertheless, the excitation system is subjected to spurious motions mainly due to the vibrational modes of the inclined planes and to the horizontal motions of the shaker. In order to provide the proper sensitivities to the 3-axis sensors, the evaluation of systematic effects is experimentally carried out and the related correction is proposed.

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Sibgatullin, Ilias, Alexandr Petrov, Xiulin Xu, and Leo Maas. "On (n,1) Wave Attractors: Coordinates and Saturation Time." Symmetry 14, no. 2 (February 4, 2022): 319. http://dx.doi.org/10.3390/sym14020319.

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The simplest geometry of the domain, for which internal wave attractors were for the first time investigated both experimentally and numerically, has the shape of a trapezium with one vertical wall and one inclined lateral wall, characterized by two parameters. Using the symmetries of such a geometry we give an exact solution for the coordinates of the wave attractors with one reflection from each of the lateral boundaries and an integer amount n of reflections from each of the horizontal boundaries. The area of existence for each (n,1) attractor has the form of a triangle in the (d,τ) parameter plane, and the shape of this triangle is explicitly given with the help of inequalities or vertices. The expression for the Lyapunov exponents and their connection to the focusing parameters is given analytically. The corresponding direct numerical simulations with low viscosity fully support the analytical results and demonstrate that in bounded domains (n,1) wave attractors can be effective transformers of the global forcing into traveling waves. The saturation time from the state of rest to the final wave regime depends almost linearly on the number of cells, n.

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Chou, Chen-Chia, and C. Marvin Wayman. "Determination of displacement vector on 180° domain boundary and polarization arrangements in lead titanate crystals." Journal of Materials Research 12, no. 2 (February 1997): 457–66. http://dx.doi.org/10.1557/jmr.1997.0067.

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180° domain boundaries in flux-grown lead titanate single crystals show intriguing domain boundary extreme fringe contrast using transmission electron microscopy. Symmetrically distributed domain boundaries with alternate contrast have been observed, indicating that opposite displacement vectors exist one by one at boundaries. If appropriate reflection vectors were employed, an inclined domain boundary shows reversed fringe contrast. An analysis based upon the two-beam dynamical theory and a rule similar to stacking-fault contrast analysis was employed to predict the geometric configuration of a 180° domain boundary using the extreme fringe contrast (EFC) behavior. Appropriately choosing reflection vectors and utilizing the EFC reversal, a displacement vector as well as the polarization vector arrangement across a 180° domain boundary can be unambiguously identified. Employing the information derived from diffraction patterns and a tilting experiment across a nearby 90° boundary, the whole polarization configuration can be uniquely determined.

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He, Dongyu, Xiujian Tang, Yuxin Liu, Jian Liu, Wenbo Du, Pengfei He, and Haidou Wang. "Phase Transition Effect on Ferroelectric Domain Surface Charge Dynamics in BaTiO3 Single Crystal." Materials 14, no. 16 (August 9, 2021): 4463. http://dx.doi.org/10.3390/ma14164463.

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The ferroelectric domain surface charge dynamics after a cubic-to-tetragonal phase transition on the BaTiO3 single crystal (001) surface was directly measured through scanning probe microscopy. The captured surface potential distribution shows significant changes: the domain structures formed rapidly, but the surface potential on polarized c domain was unstable and reversed its sign after lengthy lapse; the high broad potential barrier burst at the corrugated a-c domain wall and continued to dissipate thereafter. The generation of polarization charges and the migration of surface screening charges in the surrounding environment take the main responsibility in the experiment. Furthermore, the a-c domain wall suffers large topological defects and polarity variation, resulting in domain wall broadening and stress changes. Thus, the a-c domain wall has excess energy and polarization change is inclined to assemble on it. The potential barrier decay with time after exposing to the surrounding environment also gave proof of the surface screening charge migration at surface. Thus, both domain and domain wall characteristics should be taken into account in ferroelectric application.

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Dancuo, Zorana, Ivan Kostic, Olivera Kostic, Aleksandar Bengin, and Goran Vorotovic. "Initial development of the hybrid semielliptical-dolphin airfoil." Thermal Science, no. 00 (2021): 234. http://dx.doi.org/10.2298/tsci210515234d.

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Iosif Taposu has formulated a mathematical model and generated a family of airfoils whose geometry resembles the dolphin shape. These airfoils are characterized by a sharp leading edge and experiments have proven that they can achieve better aerodynamic characteristics at very high angles of attack than certain classical airfoils, with the nose geometry inclined downwards. On the other hand, they have not been applied to any commercial general aviation aircraft. The authors of this paper have been motivated to compare the aerodynamic characteristics of widely used NACA 2415 airfoil with Taposu?s dolphin that would have the same principal geometric characteristics. A CFD calculation model has been established and applied on NACA 2415. The results were compared with NACA experiments and very good agreements have been achieved in the major domains of lift and polar curves. The same CFD model has been applied on the counterpart Dolphin 2415. Results have shown that the Dolphin has a slightly higher lift/drag ratio in the lift coefficient domain 0.1 ? 0.35 than NACA. On the other hand, at higher and lower lift coefficients, its aerodynamic characteristics were drastically below those of the NACA section, due to the unfavorable influence of the Dolphin?s sharp nose. A series of the Dolphin?s leading edge modifications has been investigated, gradually improving its aerodynamics. Finally, version M4, consisting of about 70% of Dolphin?s original rear domain and 30% of the new nose shape, managed to exceed the NACA?s characteristics, thus paving the way to investigate the Dolphin hybrids that could be suitable for the general aviation industry.

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Xiao, Yue, Bin Zhang, Moli Zhao, and Shaowei Wang. "Convective and absolute instabilities in inclined buoyancy layers." Physics of Fluids 34, no. 9 (September 2022): 094102. http://dx.doi.org/10.1063/5.0110496.

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The linear instability of the buoyancy-driven flow adjacent to an inclined heated wall immersed in a thermally stratified medium is studied theoretically and numerically. For the temporally unstable system, spatiotemporal stability analysis is carried out to delineate the parameter space (Grashof number, Prandtl number, and tile angle) for convective/absolute instability. We provide an example of an absolute instability of the buoyancy layer on an inclined buoyancy layer. It is shown that the tile angle and Prandtl number have a dramatic influence on the spatial-temporal properties of the flow. For fixed Pr = 6.7, increasing tile angle decreases the domain of absolute instability, and when tile angle is greater than [Formula: see text], the absolute instability disappears. The flow will change from convectively unstable to absolutely unstable with the increase of Pr. Results from the direct numerical simulation are in agreement with the predictions of the linear temporal and spatial-temporal instabilities. These encouraging results should be helpful for understanding such a buoyancy-driven flow system.

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Junqueira, Tiago Guimarães, Kelrene Moreira Lara, João Batista Pinho, Mônica Aragona, Pablo Vinícius Clemente Mathias, and Claudio Veloso Mendonça. "Nest and nestling description of Automolus rufipileatus from Brazil." Revista Brasileira de Ornitologia 27, no. 3 (September 2019): 169–71. http://dx.doi.org/10.1007/bf03544467.

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AbstractWe describe here the first documented nest and nestling of the Chestnut-crowned Foliage-gleaner (Automolus rufipileatus) in Brazil. They were recorded in the municipality of Vitória do Xingu, state of Pará, at Amazonian domains. As other members of the genus Automolus, the nest of A. rufipileatus was in a steep clay bank on the edge of a small stream, comprising an inclined entrance tunnel to access two distinct chambers. The nest can be classified as a cavity with inclined tunnel. When discovered, the nest housed a nestling in advanced stage of development; therefore, it was not possible to describe the eggs, incubation period and nestling’s initial development. We encourage additional studies on Chestnut-crowned Foliage-gleaner reproductive biology.

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Grasset, Bernard. "Poésie, philosophie et mystique." Articles spéciaux 61, no. 3 (April 20, 2006): 553–81. http://dx.doi.org/10.7202/012580ar.

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Il s’agit de mettre en regard les domaines à la fois proches et différents de la poésie, de la philosophie et de la mystique, en conjuguant démarche diachronique et synchronique. Après avoir exploré les sources grecques et patristiques, l’analyse essaie de montrer, à partir d’auteurs comme Jean de la Croix, Pascal, Péguy, R. Tagore…, comment la philosophie s’approfondit à la rencontre de la poésie, comment la poésie s’élève à la rencontre de la pensée. Réunies l’une à l’autre par l’esprit, philosophie et poésie s’accomplissent dans la mystique. La fidélité au mystère incline la pensée vers le poème et le poème vers la sagesse.

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Sewell, Yvonne. "Language learner motivation, where it’s been and where it’s going." Journal of Language Teaching 2, no. 2 (February 12, 2022): 1–6. http://dx.doi.org/10.54475/jlt.2022.002.

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Since 2005 there has been a surge in empirical and theoretical research in second language (L2) motivation. This phenomenon has been quantified as the equivalent of one paper being published every twenty-two days in 2005, and one paper every five days in 2014 (Boo, Dörnyei, & Ryan, 2015). This unprecedented boom is still on an incline, meriting the unique domain status of L2 motivation (Boo et al., 2015). This paper will give an overview of previous research in L2 motivation, discuss if such claims are still valid twenty-two years later, and discuss developments in the L2 motivation regarding engagement and visualisation.

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Dhanasekar, M., and W. Bayissa. "Performance of square and inclined insulated rail joints based on field strain measurements." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 226, no. 2 (August 15, 2011): 140–54. http://dx.doi.org/10.1177/0954409711415898.

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Insulated rail joints (IRJs) possess lower bending stiffness across the gap containing insulating endpost and hence are subjected to wheel impact. IRJs are either square cut or inclined cut to the longitudinal axis of the rails in a vertical plane. It is generally claimed that the inclined cut IRJs outperform the square cut IRJs; however, there is a paucity of literature with regard to the relative structural merits of these two designs. This article presents comparative studies of the structural response of these two IRJs to the passage of wheels based on continuously acquired field data from joints strain-gauged closer to the source of impact. Strain signatures are presented in time, frequency, and wavelet domains and the peak vertical and shear strains are systematically employed to examine the relative structural merits of the two IRJs subjected to similar real-life loading. It is shown that the inclined IRJs resist the wheel load with higher peak shear strains and lower peak vertical strains than that of the square IRJs.

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Nakai, T., H. Abe, S. Yabukami, M. Yamaguchi, and K. I. Arai. "Impedance Profile of a HFC-Type Magnetic Field Sensor with Inclined Magnetic Domain Walls, and Method of Controlling the Domain Wall Angle." Journal of the Magnetics Society of Japan 27, no. 7 (2003): 832–38. http://dx.doi.org/10.3379/jmsjmag.27.832.

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Priam, Shadman Sakib, and Rehena Nasrin. "Oriented magneto-conjugate heat transfer and entropy generation in an inclined domain having wavy partition." International Communications in Heat and Mass Transfer 126 (July 2021): 105430. http://dx.doi.org/10.1016/j.icheatmasstransfer.2021.105430.

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Fukushima, Hiroshi, Yasutaro Uesaka, Yoshinobu Nakatani, and Nobuo Hayashi. "Switching times of a single-domain particle in a field inclined off the easy axis." Journal of Applied Physics 101, no. 1 (January 2007): 013901. http://dx.doi.org/10.1063/1.2402032.

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Nakai, T., H. Abe, S. Yabukami, and K. I. Arai. "Impedance property of thin film GMI sensor with controlled inclined angle of stripe magnetic domain." Journal of Magnetism and Magnetic Materials 290-291 (April 2005): 1355–58. http://dx.doi.org/10.1016/j.jmmm.2004.11.436.

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Izadi, Mahdi, Mohd Zainal Ab Kadir, Chandima Gomes, and Wan Fatin Hamamah Wan Ahmad. "Analytical Expressions for Electromagnetic Fields Associated with the Inclined Lightning Channels in the Time Domain." Electric Power Components and Systems 40, no. 4 (January 30, 2012): 414–38. http://dx.doi.org/10.1080/15325008.2011.639130.

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46

Zhang, Q., E. V. Jull, and M. J. Yedlin. "Acoustic pulse diffraction by step discontinuities on a plane." GEOPHYSICS 55, no. 6 (June 1990): 749–56. http://dx.doi.org/10.1190/1.1442886.

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High‐frequency acoustic pulse diffraction of a point source by step discontinuities in a hard plane boundary is analyzed with the uniform geometrical theory of diffraction. Proper treatment of source and receiver locations at shadow boundaries provides a more complete analysis than before for the 90-degree step as evidenced by frequency‐domain numerical values. Time‐domain results for the 90-degree step, for a 30-degree inclined step, and for two offset half‐planes illustrate the significance of corner reflection and double diffraction missing from earlier numerical models based on Kirchhoff diffraction theory. Advantages in accuracy, computational efficiency, and scope of application of geometrical over Kirchhoff diffraction theory are indicated.

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Onojima, Norio, Ayato Nakamura, Hiroki Saito, and Norihiro Daicho. "Angle-Dependent Polarized Raman Spectroscopy of TIPS Pentacene Single-Crystalline Domains Deposited on Au-Striped Substrates." MRS Proceedings 1799 (2015): 1–6. http://dx.doi.org/10.1557/opl.2015.484.

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ABSTRACT6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene) was deposited on SiO2/Si substrates with Au stripes using electrostatic spray deposition (ESD). We observed that crystalline domains on the substrates were preferentially oriented. To elucidate this phenomenon, the correlation between the orientation direction and stripe direction was investigated by angle-dependent polarized Raman spectroscopy. Since the acene planes in TIPS pentacene take an edge-on orientation on the substrates, C-C ring stretch modes can be used to probe the in-plane orientation. We found that the long molecular axis of acene planes is inclined at about 50° or 110° from the stripe direction. This result suggests that the molecular orientation of the crystalline domains can be controlled by the stripes.

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Zaytoon, M. S. Abu, Roberto Silva-Zea, and M. H. Hamdan. "A Modified Beavers and Joseph Condition for Gravity-Driven Flow over Porous Layers." WSEAS TRANSACTIONS ON HEAT AND MASS TRANSFER 16 (July 9, 2021): 79–94. http://dx.doi.org/10.37394/232012.2021.16.11.

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Gravity-driven flow through an inclined channel over a semi-infinite porous layer is considered in order to obtain a modification to the usual Beavers and Joseph slip condition that is suitable for this type of flow. Expressions for the velocity, shear stress, volumetric flow rates, and pressure distribution across the channel are obtained together with an expression for the interfacial velocity. In the absence of values for the slip parameter when the flow is over a Forchheimer porous layer, this work provides a relationship between the slip parameters of the Darcy and Forchheimer layers. Expressions for the interfacial velocities in both cases are obtained. This original work is intended to provide baseline analysis and a benchmark with which more sophisticated types of flow, over porous layers in an inclined domain can be compared.

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Hao, Guangbo, and John Mullins. "On the comprehensive static characteristic analysis of a translational bistable mechanism." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 20 (August 9, 2016): 3803–17. http://dx.doi.org/10.1177/0954406215616418.

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Bistable mechanisms have two stable positions and their characteristic analysis is much harder than the traditional spring system due to their postbuckling behaviour. As the strong nonlinearity induced by the postbuckling, it is difficult to establish a correct model to reveal the comprehensive nonlinear characteristics. This paper deals with the in-plane comprehensive static analysis of a translational bistable mechanism using nonlinear finite element analysis. The bistable mechanism consists of a pair of fixed-clamped inclined beams in symmetrical arrangement, which is a monolithic design and works within the elastic deformation domain. The displacement-controlled finite element analysis method using Strand7 is first discussed. Then the force–displacement relation of the bistable mechanism along the primary motion direction is described followed by the detailed primary translational analysis for different parameters. A simple analytical (empirical) equation for estimating the negative stiffness is obtained, and experimental testing is performed for a case study. It is concluded that (a) the negative stiffness magnitude has no influence from the inclined angle, but is proportional to the product of the Young’s modulus, beam depth, and cubic ratio for in-plane thickness to the beam length; (b) the unstable position is proportional to the product of the beam length and the Sine function of the inclined angle, and is not affected by the in-plane thickness and the material (or the out-of-plane thickness). The in-plane off-axis (translational and rotational) stiffness is further analysed to show the stiffness changes over the primary motion and the off-axis motion, and a negative rotational stiffness domain has been obtained.

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CHO, I. H., and M. H. KIM. "Wave absorbing system using inclined perforated plates." Journal of Fluid Mechanics 608 (July 11, 2008): 1–20. http://dx.doi.org/10.1017/s0022112008001845.

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The interaction of oblique monochromatic incident waves with horizontal/inclined/dual porous plates is investigated in the context of two-dimensional linear potential theory and Darcy's law (the normal velocity of fluid passing through a thin porous plate is linearly proportional to the pressure difference across it). The developed theory is verified by both small-scale and full-scale experiments. First, matched eigenfunction expansion (MEE) solutions for a horizontal porous plate are obtained. The relationship between the plate porosity and the porous parameter is obtained from systematic model tests by using six porous plates with different sizes and spacing of circular holes. Secondly, a multi-domain boundary-element method (BEM) using simple-sources (second-kind modified Bessel function) is developed to confirm the MEE solutions and to apply to more general cases including inclined or multiple porous plates. The BEM-based inner solutions are matched to the eigenfunction-based outer solutions to satisfy the outgoing radiation condition in the far field. Both analytical and BEM solutions with the developed empirical porous parameter agree with each other and correlate well with both small-scale data from a two-dimensional wave-tank test and full-scale measurement in a large wave basin. Using the developed predictive tools, wave-absorption efficiency is assessed for various combinations of porosity, water depth, submergence depth, wave heading, and plate/wave characteristics. In particular, it is found that the performance can be improved by imposing the proper inclination angle near the free surface. The optimal porosity is near porosity P=0.1 and the optimal inclination angle is around 10° as long as the plate length is greater than 20% of the wavelength. Based on the selected optimal parameters (porosity=0.1 and inclination angle=11.3°), the effective wave-absorption system for MOERI's square basin is designed.

Journal articles on the topic 'Domaine incliné'

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