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Journal articles on the topic '1-Directional structures'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Xu, Rui. "Effects of Growth Rates on Directionally Solidified Microstructure of Al-Ni-Y Ternary Alloy." Advanced Materials Research 562-564 (August 2012): 477–81. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.477.

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The directional solidification of the ternary Al alloy with composition of 2.6 at%Ni, 0.9 at%Y and 96.5 at% Al was carried out under the temperature gradient of 5 K/mm and the droping velocities of 0.5 mm/min, 1 mm/min, 5 mm/min, 10 mm/min, and 25 mm/min. The microstructure of the Al-Ni-Y ternary alloy was also analyzed by X-ray diffraction and optical microscope. The experimental results show that the microstructures of the Al-Ni-Y ternary alloy are consisted of ª-Al2, Al3Ni and Y4Ni6Al23phase when the alloy was directionally solidified in all directionally solidified rates in the experiments

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Hashimoto, Noriaki, and Koji Konbune. "DIRECTIONAL SPECTRUM ESTIMATION FROM A BAYESIAN APPROACH." Coastal Engineering Proceedings 1, no. 21 (1988): 4. http://dx.doi.org/10.9753/icce.v21.4.

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A new directional spectral estimation method using a Bayesian approach is proposed. The proposed method is examined for numerical simulation data, and the validity of the method is discussed. Some examples of the directional spectra estimated from field observation data attained at an offshore oil rig utilizing seven wave probes are also shown in this report. The major conclusions of the report are : (1) The proposed method can be applied for more than four arbitrarily mixed instrument array measurements. (2) It has a higher resolution power than other existing methods for estimating direction

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3

Feshchanka, A. A., та V. V. Khoroshko. "Surface-barrier structures based on solid solutions (In <sub>2 </sub>S <sub>3 </sub>) <sub>х </sub>•(AgIn <sub>5 </sub>S <sub>8 </sub>) <sub>1–х </sub>". Doklady of the National Academy of Sciences of Belarus 65, № 6 (2021): 764–68. http://dx.doi.org/10.29235/1561-8323-2021-65-6-764-768.

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Single crystals of solid solutions (In2S3)x⋅ (AgIn5S8)1–x were grown by the method of directional crystallization of the melt (Bridgman method). Studies of the elemental composition and crystal structure of these single crystals have been carried out. On the basis of solid solutions (In2S3)x⋅ (AgIn5S8)1–x, photosensitive structures have been created for the first time and the photoelectric properties of these structures have been determined. The possibility of using the created structures as broadband photoconverters of optical radiation is shown.

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Zhang, Liwen, Guang Liu, Huawei Chen, et al. "Bioinspired Unidirectional Liquid Transport Micro-nano Structures: A Review." Journal of Bionic Engineering 18, no. 1 (2021): 1–29. http://dx.doi.org/10.1007/s42235-021-0009-z.

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AbstractUnidirectional liquid transport without any need of external energy has drawn worldwide attention for its potential applications in various fields such as microfluidics, biomedicine and mechanical engineering. In nature, numerous creatures have evolved such extraordinary unidirectional liquid transport ability, such as spider silk, Sarracenia’s trichomes, and Nepenthes alata’s peristome, etc. This review summarizes the current progresses of natural unidirectional liquid transport on 1-Dimensional (1D) linear structure and 2-Dimensional (2D) surface structure. The driving force of unidi

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Doppert, Michael Timothy, Hannah van Overeem та Tiddo Jonathan Mooibroek. "Intermolecular π-hole/n→π* interactions with carbon monoxide ligands in crystal structures". Chemical Communications 54, № 85 (2018): 12049–52. http://dx.doi.org/10.1039/c8cc07557c.

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Intermolecular π-hole/n→π* interactions with carbon monoxide ligands are abundant in the solid state, particularly with fac-like M(CO)<sub>3</sub> fragments. The interaction is somewhat directional and DFT calculations suggest energies up to about −10 kcal mol<sup>−1</sup> for adducts of charge neutral complexes.

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Yuan, Zhiling, Lei Geng, Ningning Wang, et al. "Topology Optimization Method of Stamping Structures Based on the Directional Density Field." Materials 17, no. 3 (2024): 656. http://dx.doi.org/10.3390/ma17030656.

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The stamping process produces thin-walled structures that, in general, have uniform wall thickness and no enclosed cavity. However, it is difficult to satisfy the above geometric requirements with the current density-based topology optimization method, since configuring the related geometric constraints is challenging. In order to solve this problem, a topology optimization method for stamping structures based on a directional density field is proposed. Specifically, the directional density field is developed to enable the adding and removing of materials only along the stamping direction, so

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Marandi, Farzin, and Harald Krautscheid. "Synthesis and Characterization of Lead(II) Complexes with the 4-Methoxybenzoyltrifluoroacetonate Ligand." Zeitschrift für Naturforschung B 64, no. 9 (2009): 1027–31. http://dx.doi.org/10.1515/znb-2009-0906.

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To investigate the intermolecular interactions of ligands in lead(II) complexes featuring stereochemical activity of the lone electron pair and noncovalent donor-acceptor interactions giving rise also to multidimensional networks, the compounds [Pb2(phen)2(mbtfa)4] (1) and [Pb2(dmp)2 (mbtfa)4] (2) (phen, dmp and mbtfa− for 1,10-phenanthroline, 2,9-dimethyl-1,10-phenanthroline and 4-methoxybenzoyltrifluoroacetonate ligands, respectively) have been prepared and characterized by elemental analysis and their crystal structures investigated. The structures show the coordination number of Pb(II) to

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Zhou, Xin-Bo, Jian-Ming Gu, Meng-ying Sun, Xiu-Rong Hu, and Su-Xiang Wu. "Crystal structures of vortioxetine and its methanol monosolvate." Acta Crystallographica Section E Crystallographic Communications 71, no. 8 (2015): 883–85. http://dx.doi.org/10.1107/s2056989015012256.

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Vortioxetine, C18H22N2S, (1), systematic name 1-{2-[(2,4-dimethylphenyl)sulfanyl]phenyl}piperazine, a new drug used to treat patients with major depressive disorder, has been crystallized as the free base and its methanol monosolvate, C18H22N2S·CH3OH, (2). In both structures, the vortioxetine molecules have similar conformations: in (1), the dihedral angle between the aromatic rings is 80.04 (16)° and in (2) it is 84.94 (13)°. The C—S—C bond angle in (1) is 102.76 (14)° and the corresponding angle in (2) is 103.41 (11)°. The piperazine ring adopts a chair conformation with the exocyclic N—C bo

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Boncompagni, Simona, Ann E. Rossi, Massimo Micaroni, et al. "Mitochondria Are Linked to Calcium Stores in Striated Muscle by Developmentally Regulated Tethering Structures." Molecular Biology of the Cell 20, no. 3 (2009): 1058–67. http://dx.doi.org/10.1091/mbc.e08-07-0783.

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Bi-directional calcium (Ca2+) signaling between mitochondria and intracellular stores (endoplasmic/sarcoplasmic reticulum) underlies important cellular functions, including oxidative ATP production. In striated muscle, this coupling is achieved by mitochondria being located adjacent to Ca2+ stores (sarcoplasmic reticulum [SR]) and in proximity of release sites (Ca2+ release units [CRUs]). However, limited information is available with regard to the mechanisms of mitochondrial-SR coupling. Using electron microscopy and electron tomography, we identified small bridges, or tethers, that link the

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Lopes, Maria, Armando Bernui, Camila Franco, and Felipe Avila. "Bulk Flow Motion Detection in the Local Universe with Pantheon+ Type Ia Supernovae." Astrophysical Journal 967, no. 1 (2024): 47. http://dx.doi.org/10.3847/1538-4357/ad3735.

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Abstract The bulk flow in the Local Universe is a collective phenomenon due to the peculiar motions of matter structures, which, instead of moving in random directions, appears to follow an approximate dipole velocity flow. We apply a directional analysis to investigate, through the Hubble-Lemaître diagram, the angular dependence of the Hubble constant H 0 of a sample of Type Ia supernovae from the Pantheon+ catalog in the Local Universe (0.015 ≤ z ≤ 0.06). We perform a directional analysis that reveals a statistically significant dipole variation of H 0, at more than 99.9% confidence level, s

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Kumar, Vipin, Kh S. Singh, S. K. Singh, and S. P. Ojha. "Broadening of omni-directional reflection range in 1-d photonic crystal by using photonic quantum well structures." Optik 123, no. 21 (2012): 1943–46. http://dx.doi.org/10.1016/j.ijleo.2011.09.035.

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Lee, Kinam, Young-Jae Ryoo, Kyung-Seok Byun, and Jaeyoung Choi. "Omni-Directional Walking Pattern Generator for Child-Sized Humanoid Robot, CHARLES2." International Journal of Humanoid Robotics 14, no. 02 (2017): 1750004. http://dx.doi.org/10.1142/s0219843617500049.

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In this paper, we propose an omni-directional walking pattern generator to make a child-sized humanoid robot walk in any direction. The proposed omni-directional walking pattern generator creates walking patterns for which zero moment point (ZMP) is located on the center of the supporting foot. For humanoid robots to adapt to human’s life and perform missions, it should be taller than the minimum height of a child. In this paper, we designed a humanoid robot which is similar to a child who is taller than 1[Formula: see text]m. We show the humanoid robot’s kinematics, design of a three-dimensio

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Kashkoush, Ismail, Jennifer Rieker, Gim Chen, and Dennis Nemeth. "Process Control Challenges of Wet Etching Large MEMS Si Cavities." Solid State Phenomena 219 (September 2014): 73–77. http://dx.doi.org/10.4028/www.scientific.net/ssp.219.73.

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Anisotropic etching of silicon refers to the directional-dependent etching, usually by alkaline etchants like aqueous KOH, TMAH and other hydroxides like NaOH. With the strong dependence of the etch rate on crystal orientation and on etchant concentration and temperature, a large variety of silicon structures can be fabricated in a highly controllable and reproducible manner. Hence, anisotropic etching of <100> silicon has been a key process in common MEMS based technologies for realizing 3-D structures [1-4]. These structures include V-grooves for transistors, small holes for ink jets a

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Amaro, Fernando Domingues, Elisabetta Baracchini, Luigi Benussi, et al. "Directional Dark Matter Searches with CYGNO." Particles 4, no. 3 (2021): 343–53. http://dx.doi.org/10.3390/particles4030029.

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The CYGNO project aims at developing a high resolution Time Projection Chamber with optical readout for directional dark matter searches and solar neutrino spectroscopy. Peculiar CYGNO’s features are the 3D tracking capability provided by the combination of photomultipliers and scientific CMOS camera signals, combined with a helium-fluorine-based gas mixture at atmospheric pressure amplified by gas electron multipliers structures. In this paper, the performances achieved with CYGNO prototypes and the prospects for the upcoming underground installation at Laboratori Nazionali del Gran Sasso of

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15

Marandi, Farzin, Lotfali Saghatforoush, and Hossein Farzaneh. "Three-Dimensional Supramolecular Network Directed by Intermolecular Interactions in [Pb2(dmp)2(hfacac)4]." E-Journal of Chemistry 6, no. 4 (2009): 1085–90. http://dx.doi.org/10.1155/2009/673828.

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To investigate the interactions between noncovalent bond donor and acceptor giving rise to three dimensional networks, compound [Pb2(dmp)2(hfacac)2] (1) (dmp = 2,9-dimethyl-1,10-henanthroline and Hhfacac = hexafluoroacetylacetonate) has been prepared and characterized by elemental analysis, IR,1H NMR, and13C NMR spectroscopy and its crystal structures was investigated. The single crystal structure show the coordination number of Pb(II) to be eight with twoN-donor atoms from a “dmp” ligand and sixO-donors from the anionic ligands. The supramolecular structure of 1 is realized by weak directiona

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16

Bulovsky, Andrew. "Authoritarian communication on social media: The relationship between democracy and leaders’ digital communicative practices." International Communication Gazette 81, no. 1 (2018): 20–45. http://dx.doi.org/10.1177/1748048518767798.

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This research considers authoritarian leaders’ communicative practices on Twitter relative to their democratic counterparts. After a quantitative analysis of 144 world leaders’ Twitter accounts, this study identifies a positive and statistically significant relationship between a country’s level of democracy and its leader’s (1) average number of tweets per day and (2) proportion of tweets that are replies to other users. Additionally, qualitative case studies of Russia, Turkey, and Estonia reveal that authoritarian leaders’ accounts are of a relatively lower quality. Namely, they follow a les

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17

Goodman, Dean. "Ground‐penetrating radar simulation in engineering and archaeology." GEOPHYSICS 59, no. 2 (1994): 224–32. http://dx.doi.org/10.1190/1.1443584.

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Forward modeling of ground penetration radar is developed using exact ray‐tracing techniques. Structural boundaries for a ground model are incorporated via a discrete grid with interfaces described by splines, polynomials, and in the case of special structures such as circular objects, the boundaries are given in terms of their functional formula. In the synthetic radargram method, the waveform contributions of many different wave types are computed. Using a finely digitized antenna directional response function, the radar crosssection of buried targets and the effective area of the receiving

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18

Mink, J. W., and W. T. Thach. "Basal ganglia motor control. II. Late pallidal timing relative to movement onset and inconsistent pallidal coding of movement parameters." Journal of Neurophysiology 65, no. 2 (1991): 301–29. http://dx.doi.org/10.1152/jn.1991.65.2.301.

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1. We have tested the hypothesis that the basal ganglia initiate some one or several modes of movement by recording the change in discharge frequency of pallidal neurons during visually triggered step and visually paced ramp moves in relation to the visual stimulus onset, the change in the electromyograph (EMG), and the movement onset of trained rhesus monkeys. 2. The modal times of change for globus pallidus pars interna (GPi) were significantly later than those for forearm agonist muscle EMG. By contrast, the modal time of change for the cerebellar dentate nucleus preceded that for wrist ago

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Kornilov, Yu N., and O. S. Tsareva. "Perfecting the methods of monitoring the buildings and structures deformation." Geodesy and Cartography 958, no. 4 (2020): 9–18. http://dx.doi.org/10.22389/0016-7126-2020-958-4-9-18.

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The authors present the peculiarities of evaluating the parameters (module, direction and coordinates of the application point) of the displacement vector of the object’s deformation mark, its stabilitydegree is to be evaluated, and on this basis technologies simplifying the processes of performing field work necessary to obtain relevant information are discussed. Various options to implementpolar spatial intersection during observations from fixed stations are considered. In particular, if there aren’t any connecting marks between the instrument’s standing points, it is proposed to use a remo

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Hunsche, Stefan, Clemens Neudorfer, Faycal El Majdoub, Mohammad Maarouf, and Dieter Sauner. "Determining the Rotational Orientation of Directional Deep Brain Stimulation Leads Employing Flat-Panel Computed Tomography." Operative Neurosurgery 16, no. 4 (2018): 465–70. http://dx.doi.org/10.1093/ons/opy163.

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Abstract BACKGROUND Directional deep brain stimulation (DBS) constitutes an emerging technology that allows selective stimulation of target structures via partitioned electrode contacts. In order to effectively perform target-tailored stimulation, knowledge of the rotational orientation of the segmented leads is imperative. OBJECTIVE To develop a universally applicable and reliable method for determination of lead orientation angles in DBS using flat-panel computed tomography (fpCT). METHODS A binary template of directional leads DB-2202-30 (Boston Scientific, Natick, Massachusetts) and 6170 (

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Li, Feng, Hong Huang, Xiao Zong, et al. "Simulation Study on Directional Solidification of Titanium–Aluminum Alloy Based on Liquid Metal Cooling Method." Metals 15, no. 4 (2025): 366. https://doi.org/10.3390/met15040366.

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In this study, the ProCast software (version 2014) incorporating the CAFE model is applied to conduct numerical simulation analysis of the directional solidification process of titanium–aluminium alloy cylindrical rods at varying withdraw rates. According to the analytical results, the withdraw rate is a critical parameter that affects the morphology of the solid–liquid interface and the grain growth behavior during the directional solidification process. An increase in the drawing rate facilitates nucleation undercooling within the rod, inducing a shift in grain morphology from columnar to eq

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Kim, Y. J., and D. M. Henderson. "TEM studies of tweed microstructures in annealed amelia albite." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 1064–65. http://dx.doi.org/10.1017/s0424820100178458.

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Natural Amelia albite (Ab99.3An0.1Or0.6) annealed at 1073° and 924°C for various periods up to 140 days has been studied by NMR. TEM studies of the same sample revealed a distinct tweed microstructure in some samples annealed at both 1073°C and 924°C. On the whole, the quasi-regular tweed has a periodicity of 100 - 200 Å in both directions, one nearly normal to b* and the other approximately parallel to b*, which gives rise to two-directional streaking in SADP’s (Fig. 1 and 2). However, there are some differences in the tweed structure developed on annealing at 1073°C and at 924°C in albite.Al

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Drozd, Marek, and Mariusz Marchewka. "Theoretical and experimental comparative studies of nonlinear optical properties for selected melaminium compounds." Open Chemistry 8, no. 6 (2010): 1192–202. http://dx.doi.org/10.2478/s11532-010-0094-z.

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AbstractThe bis(melaminium) sulphate dihydrate, 2,4,6-triamine-1,3,5-triazin-1,3-ium tartrate monohydrate, 2,4,6-triamine-1,3,5-triazin-1-ium hydrogenphthalate, 2,4,6-triamine-1,3,5-triazin-1-ium acetate acetic acid solvate monohydrate, 2,4,6-triamine-1,3,5-triazin-1-ium bis(selenate) trihydrate, melaminium diperchlorate hydrate, melaminium bis(trichloroacetate) monohydrate and melaminium bis(4-hydroxybenzenesulphonate) dihydrate were discovered recently as perspective materials for nonlinear optical applications. On the basis of X-ray structures for eight melaminium compounds the time depende

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Hao, Hong Gang, Wen Shuai Hu, Hai Yan Tian, and Yi Ren. "A Dual-Band LTCC Antenna with Cross Circuitous Structure." Advanced Materials Research 601 (December 2012): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.601.163.

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A compact dual-band antenna for ISM (2.45GHz) or WiMAX (3.15GHz) applications by low-temperature co-fired ceramic (LTCC) technology is presented in this paper. The proposed antenna is composed of multi-layer structures to reduce the sizes effectively. The simulated results show that the dimensions of the antenna are 11×4.2×1.2mm3, with the 2:1 VSWR impedance bandwidth definition, the lower and upper band have the bandwidth of 80 and 90 MHz. The novel antenna has realized miniaturization and omni-directional radiation patterns across the whole operating frequency band.

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Nikonenko, E. L., Natalya A. Popova та N. A. Koneva. "Structure and Phase Composition of Ni-Al-Co-Mе-Based Alloy Containing Rhenium and Ruthenium". Solid State Phenomena 303 (травень 2020): 111–17. http://dx.doi.org/10.4028/www.scientific.net/ssp.303.111.

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The present study was conducted by transmission electron microscopy (TEM) in order to investigate the structure of multicomponent nickel-based alloy obtained by directional solidification and change in its phase composition at high-temperature annealing. All states of the alloy possessed monocrystalline structure with [001] orientation. The alloy under study contained other elements apart from Ni, such as: Al, Co, and also Mo, Cr, W, Ta, Re, and Ru. The alloy was investigated in three states after annealing for: 1) 118 h; 2) 372 h; 3) 1274 h at 1000°С. The basic phases that form the alloy were

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Liu, Endian, Zaijiu Li, Fei Li, and Bin Wang. "The Network Structure Formation of Cu-CNTs Composites During Multi-Directional Forging Process and its Mechanical Properties." Nano 16, no. 06 (2021): 2150070. http://dx.doi.org/10.1142/s1793292021500703.

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Cu–[Formula: see text] CNTs composites ([Formula: see text], 1, 2, 3 vol.%) were successfully prepared using a combination of pre-treatment, powder metallurgy and multi-directional forging processes, which provides a solution for the industrial manufacture of the composites with network CNTs structures. During the multi-directional forging process, the CNTs in the composites were distributed in a network under the synergy of metal flow and copper particle squeeze. Compared with other structure modes, the network CNTs can effectively carry and transfer loads resulting in the promotion of mechan

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Moayyedian, Farzad, and Mehran Kadkhodayan. "Non-linear influence of hydrostatic pressure on the yielding of asymmetric anisotropic sheet metals." Mathematics and Mechanics of Solids 23, no. 2 (2016): 159–80. http://dx.doi.org/10.1177/1081286516675662.

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The objective of the current research is the investigation into possible non-linear influence of hydrostatic pressure on yielding of asymmetric (exhibiting the so-called “strength-differential effect”) anisotropic sheet metals. To reach this aim, two yield functions are developed, called here “non-linear pressure sensitive criteria I and II,” (NPC-1 and NPC-2). In addition, the non-associated flow rules are employed for these new criteria. The yield functions are defined as non-linearly dependent on hydrostatic pressure, while the plastic potential functions are introduced to be pressure insen

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Meng, Yan Qiu, Guo Ping Chen, and Shi Chang Yan. "Wave-in-Deck Impulsive Pressure on Unsheltered Jetties Exposed to Waves and Current." Applied Mechanics and Materials 256-259 (December 2012): 1928–36. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1928.

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Impulsive pressure induced by waves is an important factor to be considered in the design of offshore structures. This paper presents results from physical model tests on the impulsive pressure on deck of unsheltered jetties and similar structures exposed to directional waves in the presence of currents. The pressures were measured on a 1:50 scale model of a jetty head with down-standing beams and berthing members. Different incident wave angles, the current velocities and the angles between wave and current were considered to identify the effects of these factors on the impulsive pressures. D

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Gupta, P. K., and G. Ghosh. "Seismic Response of an Isolated Curved Bridge with Lead Rubber Bearing by Considering Design Aspect." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 569–73. http://dx.doi.org/10.38208/acp.v1.550.

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Studies on the application of the lead rubber bearing (LRB) isolation system to various structures carried out as one of the measures to improve seismic performance. Curved bridges play noteworthy role in the modern transportation system. Due to complex interchange and the desire to conform to existing geometric confinements have made this type of structures more alluring. Horizontally curved bridges make up of a noteworthy portion of the bridge population in various countries. In the present study, Lead rubber bearings have been used in an Isolated Curved bridges. Seismic loadings have been c

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Gopinath, Smitha, J. Rajasankar, and N. R. Iyer. "Nonlinear Analysis of RC Structures Using Isotropic Damage Model." International Journal of Damage Mechanics 21, no. 5 (2011): 647–69. http://dx.doi.org/10.1177/1056789511410457.

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This article proposes a simple isotropic damage model within damage mechanics framework to represent the behavior of concrete in tension. Macroscopic evolution of tensile crack is considered as damage and is mathematically defined using an exponential function of tensile strain. A damage evolution law is formulated by applying strain equivalence principle to hyperbolic tension-softening curve. Value of damage variable is assumed theoretically to vary between ‘0’ and ‘1’ to denote uncracked and ruptured states, respectively. A smeared rotating crack model is coupled with damage formulation to s

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Yang, Wenlei, Ke Tian, and Le Li. "Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber." Sensors 25, no. 7 (2025): 2091. https://doi.org/10.3390/s25072091.

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A torsion sensor with directional discrimination based on a single-mode–twisted multimode–single-mode (STMS) fiber structure is demonstrated. The STMS fiber structure is fabricated by fusion-splicing a segment of multimode fiber (MMF) between two single-mode fibers (SMFs), where the MMF is simultaneously heated and twisted to form paired helical-type structures. The experimental results indicate that the resonance wavelength shifts towards shorter wavelengths as the twist rate increases in the clockwise direction, while an opposite shift occurs in the counterclockwise direction. Within a twist

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Lu, Xiaomin, Zhiyi Zhang, Haoran Song, and Haowen Yan. "Pattern Recognition in Urban Maps Based on Graph Structures." ISPRS International Journal of Geo-Information 14, no. 5 (2025): 191. https://doi.org/10.3390/ijgi14050191.

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Map groups exhibit distinct spatial distribution characteristics, making their pattern recognition crucial for map generalization, map matching, geographic dataset construction, and urban planning/analysis. Current pattern recognition methods for map groups primarily fall into two categories: machine learning-based approaches and traditional methods. While both have achieved certain recognition outcomes, they suffer from four key limitations: (1) insufficient algorithmic interpretability; (2) limited model generalizability; (3) restricted pattern diversity in recognition; (4) inability of exis

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Zhao, Guanxiao, Tao Fu, and Jiaxing Li. "Study on Concave Direction Impact Performance of Similar Concave Hexagon Honeycomb Structure." Materials 16, no. 8 (2023): 3262. http://dx.doi.org/10.3390/ma16083262.

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Based on the traditional concave hexagonal honeycomb structure, three kinds of concave hexagonal honeycomb structures were compared. The relative densities of traditional concave hexagonal honeycomb structures and three other classes of concave hexagonal honeycomb structures were derived using the geometric structure. The impact critical velocity of the structures was derived by using the 1-D impact theory. The in-plane impact characteristics and deformation modes of three kinds of similar concave hexagonal honeycomb structures in the concave direction at low, medium, and high velocity were an

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Raffo, Pablo A., Fabio D. Cukiernik та Ricardo F. Baggio. "The three-component cocrystal 1,3,5-trifluoro-2,4,6-triiodobenzene–pyridineN-oxide–water (1/2/1) built up by halogen bonds, hydrogen bonds and π–π interactions". Acta Crystallographica Section C Structural Chemistry 71, № 2 (2015): 84–88. http://dx.doi.org/10.1107/s205322961402796x.

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The title three-component cocrystal, C6F3I3·2C5H5NO·H2O, has been prepared as a strong candidate for multiple I...O interactions. Its crystal structure is compared with its 1:1 close relative, C6F3I3·C5H5NO [Aakeröyet al.(2014a).CrystEngComm,16, 28–31]. The 1,3,5-trifluoro-2,4,6-triiodobenzene and water species both have crystallographic twofold axial symmetry. The main synthon in both structures is the π–π stacking of benzene rings, complemented by a number of O—H...O, C—F...π and, fundamentally, C—I...O interactions. As expected, the latter are among the strongest and more directional intera

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Sinkler, Wharton, and David E. Luzzi. "Analysis of metastable structures in quenched Cr-Ti alloys." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 144–45. http://dx.doi.org/10.1017/s0424820100173856.

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Metastable water-quenched bcc Cr40Ti60 is reported to undergo solid state amorphization during sub-eutectoid temperature anneals. Electron diffraction of the metastable bcc phase reveals complex patterns of diffuse scattering indicating the presence of deviation, topological, chemical or both, from the ideally random solid solution. The hypothesis that the microstructure causing the diffuse scattering plays a role in the amorphization process is supported by studies in which an electron- irradiated bcc-based Cu-Ti alloy shows similar diffuse scattering just prior to irradiation-induced amorphi

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Magnusson, Anne Karin, Robert Jensen, and Val Swail. "Spectral shapes and parameters from three different wave sensors." Ocean Dynamics 71, no. 9 (2021): 893–909. http://dx.doi.org/10.1007/s10236-021-01468-7.

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AbstractThe quality of wave measurements is of primary importance for the validation of wave forecasting models, satellite wave calibration and validation, wave physics, offshore operations and design and climate monitoring. Validation of global wave forecasts revealed significant regional differences, which were linked to the different wave buoy systems used by different countries. To fully understand the differences between the wave measurement systems, it is necessary to go beyond investigations of the integral wave parameters height, period and direction, into the frequency spectra and the

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Bocian, Aleksandra, Adam Gorczyński, Dawid Marcinkowski, Grzegorz Dutkiewicz, Violetta Patroniak, and Maciej Kubicki. "Bases, solvates and salts: new benzimidazole- and pyridine-scaffolded ligands." Acta Crystallographica Section C Structural Chemistry 76, no. 4 (2020): 367–74. http://dx.doi.org/10.1107/s2053229620004131.

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The intermolecular interactions in the structures of a series of Schiff base ligands have been thoroughly studied. These ligands can be obtained in different forms, namely, as the free base 2-[(2E)-2-(1H-imidazol-4-ylmethylidene)-1-methylhydrazinyl]pyridine, C10H11N5, 1, the hydrates 2-[(2E)-2-(1H-imidazol-2-ylmethylidene)-1-methylhydrazinyl]-1H-benzimidazole monohydrate, C12H12N6·H2O, 2, and 2-{(2E)-1-methyl-2-[(1-methyl-1H-imidazol-2-yl)methylidene]hydrazinyl}-1H-benzimidazole 1.25-hydrate, C13H14N6·1.25H2O, 3, the monocationic hydrate 5-{(1E)-[2-(1H-1,3-benzodiazol-2-yl)-2-methylhydrazinyli

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Yoshimura, M. "Evaluation of Forced and Self-Excited Vibrations at the Design Stage of Machine-Tool Structures." Journal of Mechanisms, Transmissions, and Automation in Design 108, no. 3 (1986): 323–29. http://dx.doi.org/10.1115/1.3258734.

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This paper proposes a method for evaluating forced and self-excited vibrations at the design stage of machine-tool structural systems. Cross modal flexibilities between the forced excited and the displacement pick-up points are analyzed. The relationships between the highest allowable values of receptance and vibrational displacement, and the static compliance and modal flexibility are clarified. Then the algorithms of the evaluative methods which use those analyses are given. Using the proposed method, natural modes which must be disregarded in the evaluation of the characteristics can be det

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Shirokov, Igor, Igor Serdyuk, Andrey Azarov, and Elena Shirokova. "Study of System of Wireless Power Transfer." Infocommunications and Radio Technologies 5, no. 4 (2022): 445–57. http://dx.doi.org/10.29039/2587-9936.2022.05.4.33.

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New approach to wireless power transfer for electrical vehicles battery charging is discussed in a paper. The system of power transfer consists of generating unit with VSWR meter, two electromagnetic structures, and rectifying unit. Electromagnetic structure which is represented as microstrip device does not emit electromagnetic energy at its stand alone position. When electromagnetic structures approach each other ones are transformed into alone directional coupler; and effective power transfer takes place. System simulation in AWR design environment was carried out at different mutual arrang

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Chen, Zijian. "Numerical study of different micro-channel structures on fluid flow and heat transfer performance." Journal of Physics: Conference Series 2441, no. 1 (2023): 012015. http://dx.doi.org/10.1088/1742-6596/2441/1/012015.

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Abstract This research mainly proposed three new types of micro-channel heat sink structures. Numerical simulations and simulation calculations were carried out on the heat sink structure. The three groups of inlet flow rates were used as the main variables to analyse the three new types of heat sinks, model flow characteristics and heat transfer performance. In addition, it was compared with the traditional rectangular micro-channel heat sink (RT-MCHS). Based on and compared with RT-MCHS, three new microchannel heat sinks, reverse concave microchannel heat sink (RC-MCHS), co-directional conca

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Ram, C. S., D. Vakula, and M. Chakravarthy. "Design of Compact Broadband Omni directional Canonical Sleeve Antenna covering 500-3600 MHz." Advanced Electromagnetics 7, no. 2 (2018): 53–59. http://dx.doi.org/10.7716/aem.v7i2.654.

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A novel compact broadband Canonical Sleeve Antenna (CSA) covering 500-3600 MHz with omni directional characteristics is presented in this paper. A new method is employed in which the radiating antenna structure is designed as combination of three different canonical structures: hemispherical, conical and cylindrical elements. To accomplish the broad bandwidth with compact size, dipole antenna is designed by using cylindrical sleeve over the hemispherical dipole with conical extensions and cylindrical attachments. Performance characteristics of CSA is simulated and compared with BiConical Anten

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Field, Laurence H., Athale Evans, and David L. Macmillan. "Sound production and stridulatory structures in hermit crabs of the genus Trizopagurus." Journal of the Marine Biological Association of the United Kingdom 67, no. 1 (1987): 89–110. http://dx.doi.org/10.1017/s0025315400026382.

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The cheliped stridulatory structures are described for Trizopagurus strigimanus, T. melitai, T. tenebrarum and T. strigatus.Sound in T. strigimanus is produced during reciprocal flexion and extension of the carpo-propodite and mero-carpopodite joints of tightly apposed chelae. These underwater sounds occur as syllables, each of which is composed of damped pulses with a repetition rate of 36–303/s and a within-pulse frequency of 6–8 kHz. The maximum sound pressure level (peak to peak) 15 cm from the source was 24 dB re: 1 Pa.The gastropod shells inhabited by T. strigimanus had a weak effect (5%

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Mohamad, Rapidah, Normah Awang, Nurul Farahana Kamaludin, Mukesh M. Jotani та Edward R. T. Tiekink. "Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2S,S′]triphenyltin(IV)". Acta Crystallographica Section E Crystallographic Communications 74, № 3 (2018): 302–8. http://dx.doi.org/10.1107/s2056989018001901.

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The crystal and molecular structures of the two title organotin dithiocarbamate compounds, [Sn(C4H9)2(C7H14NO2S2)2], (I), and [Sn(C6H5)3(C5H10NOS2)], (II), are described. Both structures feature asymmetrically bound dithiocarbamate ligands leading to a skew-trapezoidal bipyramidal geometry for the metal atom in (I) and a distorted tetrahedral geometry in (II). The complete molecule of (I) is generated by a crystallographic twofold axis (Sn site symmetry 2). In the crystal of (I), molecules self-assemble into a supramolecular array parallel to (10-1)viamethylene-C—H...O(methoxy) interactions. I

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Zhang, Jia Hui, Zhong Ming Xiong, Zhi Qiang Chen, and Ling Bo Kong. "The Analysis of Cantilever on Catastrophe to Irregular High-Rise Structure in Earthquake." Applied Mechanics and Materials 166-169 (May 2012): 2364–67. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.2364.

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Anomalistic architecture especially overhanging structure has become a trend of architectural development, Based on the characteristics of a large vertical eccentric, more prominent facade and strong reverse effect,overhanging structure is often serious super-norm and extremely detrimental to the seismic design[1], Now it has become an important part of seismic review. By the analysis and comparison on the coupling of the translational and torsional seismic response from ANSYS program[2]. The behavior of seismic catastrophe of cantilever building structure is studied under bi-directional earth

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Cornett, Andrew, and Scott Baker. "ON THE IMPORTANCE OF CONSIDERING MULTIPLE SEASTATE REALIZATIONS WHEN ESTIMATING DESIGN LOADS IN MULTI-DIRECTIONAL SHALLOW-WATER WAVES." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 46. http://dx.doi.org/10.9753/icce.v36v.management.46.

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The objectives of this work are to close some of the knowledge gaps facing designers tasked with designing new offshore structures or upgrading older structures located in shallow waters and exposed to energetic multi-directional waves generated by passing hurricanes or cyclones. This will be accomplished by first investigating and characterizing the natural variability of the maximum wave heights and crest elevations found in multiple 2-hour long realizations of several short-crested shallow-water near-breaking seastates. Following this, the variability and repeatability of peak pressures and

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Tonkikh, Orly, Elena Siegel, Yuuko Johnson, Everlyne Ogugu, and Heather Young. "NURSE–FAMILY INTERACTION DURING ACUTE HOSPITALIZATION OF OLDER ADULTS." Innovation in Aging 8, Supplement_1 (2024): 239–40. https://doi.org/10.1093/geroni/igae098.0773.

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Abstract Family caregivers play a vital role for older adults during acute illness, yet there is limited research on the dynamics between nurses and families of older adults in acute care settings. This descriptive qualitative study explored perspectives on interactions during acute hospitalization in medical-surgical units among 24 nurses and caregivers. We conducted semi-structured interviews and used thematic analysis to identify key conditions and patterns of interaction. Nurses acknowledge the importance of family input to tailor and execute care plans to improve patient outcomes. Hospita

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Oh, Chai Lian, Kok Keong Choong, Toku Nishimura, and Jae-Yeol Kim. "Multi-Directional Shape Change Analysis of Biotensegrity Model Mimicking Human Spine Curvature." Applied Sciences 12, no. 5 (2022): 2377. http://dx.doi.org/10.3390/app12052377.

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This paper presents a numerical strategy for the shape change analysis of spine biotensegrity models in multi-directional modes. The formulation of incremental equilibrium equations and optimization problem for shape change analysis via the forced elongation of cables to achieve the target coordinates of the monitored nodes of spine biotensegrity models are presented. The distance between the monitored nodes and the target coordinates is chosen as the objective function which is minimized subject to inequality constraints on member axial forces and cable forced elongation. Three spine biotense

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Krüger, Marie T., Rebecca Kurtev-Rittstieg, Georg Kägi, Yashar Naseri, Stefan Hägele-Link, and Florian Brugger. "Evaluation of Automatic Segmentation of Thalamic Nuclei through Clinical Effects Using Directional Deep Brain Stimulation Leads: A Technical Note." Brain Sciences 10, no. 9 (2020): 642. http://dx.doi.org/10.3390/brainsci10090642.

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Automatic anatomical segmentation of patients’ anatomical structures and modeling of the volume of tissue activated (VTA) can potentially facilitate trajectory planning and post-operative programming in deep brain stimulation (DBS). We demonstrate an approach to evaluate the accuracy of such software for the ventral intermediate nucleus (VIM) using directional leads. In an essential tremor patient with asymmetrical brain anatomy, lead placement was adjusted according to the suggested segmentation made by the software (Brainlab). Postoperatively, we used directionality to assess lead placement

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Demircan, Batın, and Sabri Bıçakçı. "Generation of regular waves with FPGA based controller in a wave channel." Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi 27, no. 2 (2025): 519–36. https://doi.org/10.25092/baunfbed.1618673.

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Wave channel systems provide crucial experimental platforms for the development and optimization of wave energy converters. By enabling the safe and repeatable simulation of real ocean conditions, these systems play a key role in understanding wave behavior and reducing design risks. They allow the generation of a specific wave model to investigate the effects of water waves on coastal structures, coastal ecosystems, and offshore platforms. In this study, a hydraulically controlled piston-type wave generator was utilized in a 24-meter-long wave channel, which measures 1 meter in width and 1 me

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Kowalik, W. S., and W. E. Glenn. "Image processing of aeromagnetic data and integration with Landsat images for improved structural interpretation." GEOPHYSICS 52, no. 7 (1987): 875–84. http://dx.doi.org/10.1190/1.1442358.

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Digital image processing of aeromagnetic data from three mineral prospects significantly improved the existing structural interpretations that were made from contour maps of the aeromagnetic data. Useful image‐processing techniques include (1) presentation as small‐scale, gray‐level images, (2) local contrast enhancement, (3) artificial illumination, and (4) directional filtering. Digital processing also enables direct comparison between Landsat data and aeromagnetic data. Interpretations were improved by the study of the integrated data sets. Images of aeromagnetic data from one prospect in a

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