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Journal articles on the topic 'Spiral corrugation'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Oleksandra, Baskova, and Voropaiev Gennadii. "INFLUENCE OF THE FLOW STRUCTURE FORMATION ON HEAT TRANSFER PROCESSES IN TUBES WITH SPIRAL CORRUGATED INSERTS." Eastern-European Journal of Enterprise Technologies 3, no. 8(99) (2019): 29–35. https://doi.org/10.15587/1729-4061.2019.165852.

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In order to enhance heat transfer processes in elements of power equipment with minimal energy consumption, the concept of partial structure formation of the heat transfer surface was developed. To determine the energy efficiency of partial structure formation of the heat transfer surface with transitional Reynolds numbers, the surface in the form of spiral corrugation is considered. Partial spiral corrugation due to a change in the flow structure makes it possible to increase the convective component of heat transfer with a moderate increase in friction loss in a transient flow regime. Based

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Feitzinger, J. V., and J. Spicker. "New light on the corrugation phenomenon in our Galaxy." Symposium - International Astronomical Union 106 (1985): 175–78. http://dx.doi.org/10.1017/s0074180900242356.

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This investigation presents a total picture of the well-known corrugation-phenomenon for the (heliocentric) longitude range 10° ≤ 1 ≤ 240° as derived from HI-studies. For each spiral arm of the spiral pattern of Simonson (1976), we derived the centroid of the HI distribution from the 21-cm line surveys of Weaver and Williams (1974), Sinha (1979), and Westerhout and Wendlandt (1982). The three-component mass model of Rohlfs and Kreitschmann (1981) was used to derive a radial-velocity field, which was supplemented by a radial expansion field and by density-wave kinematics. This combined field se

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Vu, Tho Hung, Hoai Nam Vu, Thuy Dong Dang, et al. "A New Analytical Approach for Nonlinear Global Buckling of Spiral Corrugated FG-CNTRC Cylindrical Shells Subjected to Radial Loads." Applied Sciences 10, no. 7 (2020): 2600. http://dx.doi.org/10.3390/app10072600.

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The present paper deals with a new analytical approach of nonlinear global buckling of spiral corrugated functionally graded carbon nanotube reinforced composite (FG-CNTRC) cylindrical shells subjected to radial loads. The equilibrium equation system is formulated by using the Donnell shell theory with the von Karman’s nonlinearity and an improved homogenization model for spiral corrugated structure. The obtained governing equations can be used to research the nonlinear postbuckling of mentioned above structures. By using the Galerkin method and a three term solution of deflection, an approxim

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Tho Hung, Vu, Dang Thuy Dong, Nguyen Thi Phuong, et al. "Nonlinear Buckling Behavior of Spiral Corrugated Sandwich FGM Cylindrical Shells Surrounded by an Elastic Medium." Materials 13, no. 8 (2020): 1984. http://dx.doi.org/10.3390/ma13081984.

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This paper presents a semi-analytical approach for investigating the nonlinear buckling and postbuckling of spiral corrugated sandwich functionally graded (FGM) cylindrical shells under external pressure and surrounded by a two-parameter elastic foundation based on Donnell shell theory. The improved homogenization theory for the spiral corrugated FGM structure is applied and the geometrical nonlinearity in a von Karman sense is taken into account. The nonlinear equilibrium equation system can be solved by using the Galerkin method with the three-term solution form of deflection. An explicit so

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Masset, F., and M. Tagger. "Non-Linear Excitation of Warps by Spiral Waves in Galaxies." International Astronomical Union Colloquium 157 (1996): 363–65. http://dx.doi.org/10.1017/s0252921100050028.

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AbstractWe present a mechanism to explain the permanent excitation of warps in spiral or barred galaxies. We show that non-linear mode coupling with the spiral wave can be very efficient to drive two warp waves. We derive an expression of the coupling coefficient in the WKB approximation. We show that the coupling is too weak in the stellar disk, except at the Outer Lindblad Resonance where the spiral slows down and is efficiently coupled to warp waves. There, the spiral can almost completely transfer its energy and angular momentum to a ”transmitted“ warp, which we can observe in HI, and a ”r

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6

Chen, X. D., X. Y. Xu, S. K. Nguang, and Arthur E. Bergles. "Characterization of the Effect of Corrugation Angles on Hydrodynamic and Heat Transfer Performance of Four-Start Spiral Tubes." Journal of Heat Transfer 123, no. 6 (2001): 1149–58. http://dx.doi.org/10.1115/1.1409261.

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A series of four-start spirally corrugated tubes has been subjected to heat transfer and hydrodynamic testing in a double-pipe heat exchanger. The study has been focused on the non-symmetric nature of the corrugation angles along the longitudinal direction. Both friction factors and heat transfer coefficients inside the tubes have been correlated against various process parameters. It can be shown that by altering the internal non-symmetric wavy shapes of the tubes, one is able to manipulate heat transfer and friction characteristics. The experimental results have been compared with some popul

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Suetina, T. A., O. N. Chernykh, A. V. Burlachenko, and D. D. Koroteev. "Hydraulic parameters of culverts from pipes with normal and spiral form of corrugation." Journal of Physics: Conference Series 1687 (November 2020): 012037. http://dx.doi.org/10.1088/1742-6596/1687/1/012037.

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8

Li, Ya-xia, Jian-hua Wu, Hang Wang, Li-ping Kou, and Xiao-hang Tian. "Fluid Flow and Heat Transfer Characteristics in Helical Tubes Cooperating with Spiral Corrugation." Energy Procedia 17 (2012): 791–800. http://dx.doi.org/10.1016/j.egypro.2012.02.172.

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9

Yildiz, Sebiha, Zeynep Alparslan, İlker Coşar, Salih Yavuz, and Hasan Güneş. "Investigation of heat transfer and pressure drop in flexible metal hoses with corrugated surfaces." Thermal Science, no. 00 (2024): 154. http://dx.doi.org/10.2298/tsci231217154y.

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In this study, we conducted a numerical investigation of heat transfer and pressure drop in annular corrugated and 1-, 2-, and 3-start spiral-corrugated flexible metal hoses. To validate the numerical results for pressure drop, we established an experimental setup. The pressure drop results were verified through experimental data, while the numerical heat transfer results were validated against existing correlations in the literature. The results obtained using the corrugated flexible metal hoses were compared to those of a smooth tube, and all hoses along with the smooth tube were 1 meter lon

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10

Lazareva, G. G., I. P. Oksogoeva, and A. V. Sudnikov. "MATHEMATICAL MODEL OF PLASMA TRANSFER IN A HELICAL MAGNETIC FIELD." Доклады Российской академии наук. Математика, информатика, процессы управления 514, no. 1 (2023): 129–34. http://dx.doi.org/10.31857/s2686954323600945.

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The paper presents the results of mathematical modeling of plasma transfer in a spiral magnetic field using new experimental data obtained at the SMOLA trap created at the Budker Institute of Nuclear Physics SB RAS. Plasma confinement in the trap is carried out by transmitting a pulse from a magnetic field with helical symmetry to a rotating plasma. New mathematical model is based on a stationary plasma transfer equation in an axially symmetric formulation. The distribution of the concentration of the substance obtained by numerical simulation confirmed the confinement effect obtained in the e

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11

Elboughdiri, Noureddine, Sinan Q. Salih, Bhupendra Singh Chauhan, et al. "Numerical analysis of thermohydraulic and exergetic performance in corrugated spiral tubes with diverse arc corrugation configurations." Case Studies in Thermal Engineering 51 (November 2023): 103605. http://dx.doi.org/10.1016/j.csite.2023.103605.

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12

Oleinik, A. A. "Hexacrista intorta (Ciliophora, Tintinnida), a new genus and species from the waters of the North European basin." Vestnik MGTU 28, no. 1 (2025): 119–26. https://doi.org/10.21443/1560-9278-2025-28-1-119-126.

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In the waters of the Greenland and Barents Seas, ciliates-tintinnids have been found, their lorica combining the definitive features of several genera of the Tintinnidae family, has an unusual, unique among all Tintinnida, exterior feature, i. e. spiral folding (corrugation) of the wall. The described tintinnids in terms of shell morphology correspond to the features of the Tintinnidae family Claparède & Lachmann, 1858, sensu Bachy et al., 2012 and combine individual features of its different genera: Salpingella, Amphorellopsis, Amphorides, Steenstrupiella. Based on the set of features tha

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Emani, Madhu Sruthi, Hrishiraj Ranjan, Anand Kumar Bharti, Josua P. Meyer, and Sujoy Kumar Saha. "Laminar flow heat transfer enhancement in square and rectangular channels having: (1) A wire-coil, axial and spiral corrugation combined with helical screw-tape with and without oblique teeth and a (2) spiral corrugation combined with twisted tapes with oblique teeth." International Journal of Heat and Mass Transfer 144 (December 2019): 118707. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2019.118707.

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14

Pantaleoni González, M., J. Maíz Apellániz, R. H. Barbá, and B. Cameron Reed. "The Alma catalogue of OB stars – II. A cross-match with Gaia DR2 and an updated map of the solar neighbourhood." Monthly Notices of the Royal Astronomical Society 504, no. 2 (2021): 2968–82. http://dx.doi.org/10.1093/mnras/stab688.

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ABSTRACT We cross-match the Alma catalogue of OB stars with Gaia DR2 astrometry and photometry as a first step towards producing a clean sample of massive stars in the solar neighbourhood with a high degree of completeness. We analyse the resulting colour–absolute magnitude diagram to divide our sample into categories and compare extinction estimates from two sources, finding problems with both of them. The distances obtained with three different priors are found to have few differences among them, indicating that Gaia DR2 distances are robust. An analysis of the 3D distribution of massive sta

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15

CHERNYKH, O. N., and A. V. RBURLACHENKO. "RECLAMATION AND CULVERT CROSSINGS MADE OF CORRUGATED PIPES ON SPAWNING STREAMS." Prirodoobustrojstvo, no. 5 (2020): 68–77. http://dx.doi.org/10.26897/1997-6011-2020-5-68-77.

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Recommendations are presented for solving issues that arise in the design and operation of tubular transport crossings of corrugated metal structures through spawning streams while ensuring the safety and natural reproduction of fish stocks. There are discussed the results of experimental studies of culverts made of metal corrugated pipes with a normal and spiral shape of corrugation the bottom of which is buried and filled with suitable granular material to the level of the natural channel of a small watercourse. It is established that when 10% of the area of the corrugated pipe is occupied b

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16

Vasiliev, Sergey, Viktor Alekseev, Mikhail Vasiliev, and Alyona Fedorova. "Development and Research of a Profile Recorder for Measuring Deviations in the Shape of the Surface of Products by Laser Spiral Scanning." Metal Working and Material Science 22, no. 4 (2020): 71–81. http://dx.doi.org/10.17212/1994-6309-2020-22.4-71-81.

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Introduction. The paper deals with the development of a Profile recorder and measurement of deviations in the shape of the surface of products by laser spiral scanning. Analysis of the scientific literature shows that at present, the issues of monitoring and evaluating deviations in the shape of the surface of products require further research, since the use of well-known devices and methods does not always provide the necessary accuracy, manufacturability and sufficient information content of measurements. The research urgency is caused by the fact that existing methods of measuring form devi

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17

Pal, Pranab Kumar, and Sujoy Kumar Saha. "Experimental investigation of laminar flow of viscous oil through a circular tube having integral spiral corrugation roughness and fitted with twisted tapes with oblique teeth." Experimental Thermal and Fluid Science 57 (September 2014): 301–9. http://dx.doi.org/10.1016/j.expthermflusci.2014.05.007.

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18

Dragan, А. P., О. V. Flionts, М. І. Klendiy, R. М. Kotyk, and І. І. Semeniv. "Features of Manufacturing Spiral Corrugated Blanks From Various Profiles of Corrugations." Podilian Bulletin: Agriculture, Engineering, Economics, no. 29 (November 30, 2018): 54–61. http://dx.doi.org/10.37406/2706-9052-2018-2-7.

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The leading role in the field of using spiral mechanisms plays the design and manufacture of corrugated spiral working bodies, which are widely used in mixers, heat exchangers, machines for borontation of free abrasives, in the confectionery and pharmaceutical industries, etc. Increasing the requirements to the design and technological parameters, quality, reliability and durability, enhanced technological capabilities require deep analysis of existing structures and technologies of their production and the development of scientific research on theoretical and experimental studies and their su

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19

Djordjevic, Milan, Velimir Stefanovic, and Marko Mancic. "Pressure drop and stability of flow in Archimedean spiral tube with transverse corrugations." Thermal Science 20, no. 2 (2016): 579–91. http://dx.doi.org/10.2298/tsci150118212d.

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Isothermal pressure drop experiments were carried out for the steady Newtonian fluid flow in Archimedean spiral tube with transverse corrugations. Pressure drop correlations and stability criteria for distinguishing the flow regimes have been obtained in a continuous Reynolds number range from 150 to 15 000. The characterizing geometrical groups which take into account all the geometrical parameters of Archimedean spiral and corrugated pipe has been acquired. Before performing experiments over the Archimedean spiral, the corrugated straight pipe having high relative roughness e/d = 0.129 of ap

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20

Rhoads, James E. "Near Infrared Star Counts as a Probe of Asymmetries in the Galaxy's Disk." Symposium - International Astronomical Union 169 (1996): 59–60. http://dx.doi.org/10.1017/s0074180900229525.

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I have recently started an observing program to study the distribution of dynamically old giant stars in the disk, looking for (i) large amplitude spiral arms and (ii) small amplitude corrugations. (i)Theoretical studies of spiral density waves usually assume that the mass density contrast is weak and the waves linear. Recent observations in red and near-IR light (e.g., Elmegreen and Elmegreen 1984; Rix and Zaritsky 1994), coupled with stellar population models, suggest otherwise. In the Galaxy, we can compare observations of diffuse NIR light and of individual stars, eliminating the need for

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21

Florido, E., E. Battaner, M. Prieto, E. Mediavilla, and M. L. Sanchez-Saavedra. "Corrugations in the discs of spiral galaxies. NGC 4244 and 5023." Monthly Notices of the Royal Astronomical Society 251, no. 2 (1991): 193–98. http://dx.doi.org/10.1093/mnras/251.2.193.

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22

Laporte, Chervin F. P., Ivan Minchev, Kathryn V. Johnston, and Facundo A. Gómez. "Footprints of the Sagittarius dwarf galaxy in the Gaia data set." Monthly Notices of the Royal Astronomical Society 485, no. 3 (2019): 3134–52. http://dx.doi.org/10.1093/mnras/stz583.

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ABSTRACT We analyse an N-body simulation of the interaction of the Milky Way (MW) with a Sagittarius-like dSph (Sgr), looking for signatures which may be attributed to its orbital history in the phase space volume around the Sun in light of Gaia DR2 discoveries. The repeated impacts of Sgr excite coupled vertical and radial oscillations in the disc which qualitatively, and to a large degree quantitatively are able to reproduce many features in the 6D Gaia DR2 samples, from the median VR, Vϕ, V$z$ velocity maps to the local δρ($v$$z$, $z$) phase-space spiral which is a manifestation of the glob

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23

Widrow, Lawrence M., Keir Darling, and Haochuan Li. "Warps, Waves, and Phase Spirals in the Milky Way." Proceedings of the International Astronomical Union 14, S353 (2019): 65–70. http://dx.doi.org/10.1017/s1743921319009049.

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AbstractThe stellar disc of the Milky Way exhibits clear departures from planarity, the most conspicuous manifestation being the Galactic Warp but also includes an apparent corrugation pattern in number counts around 15kpc from the Galactic centre, a wave like pattern in the vertical velocities of stars as a function of guiding radius, asymmetries about the midplane in both number counts and bulk motions, and phase spirals in the z–vz projection of the local stellar distribution function. We discuss the physics of these phenomena and, in particular, suggest a possible avenue for inferring the

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24

Matthews, L. D., and Juan M. Uson. "Corrugations in the Disk of the Edge‐On Spiral Galaxy IC 2233." Astrophysical Journal 688, no. 1 (2008): 237–44. http://dx.doi.org/10.1086/592086.

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25

Ermakov, V. V., O. G. Prokhoda, �. N. Shebanits, V. M. Drozdenko, and A. O. Los'. "Optimization of a technology for producing electric-welded spiral-seam pipes with helical corrugations." Metallurgist 31, no. 10 (1987): 318–20. http://dx.doi.org/10.1007/bf00733118.

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26

Wu, Zhiwei, and Caifu Qian. "Numerical Investigation of Fluid Flow and Heat Transfer Characteristics in Helical Tube with Spiral Corrugations." Journal of Physics: Conference Series 1549 (June 2020): 042114. http://dx.doi.org/10.1088/1742-6596/1549/4/042114.

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27

Widrow, Lawrence M., and Matthew H. Chequers. "Galactoseismology in the Age of Gaia." Proceedings of the International Astronomical Union 13, S334 (2017): 189–94. http://dx.doi.org/10.1017/s1743921317007153.

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AbstractRecent observations from SEGUE, RAVE, and LAMOST have revealed tantalizing evidence that the local stellar disk of the Milky Way is in a state of disequilibrium. In particular, the disk appears to exhibit bending and breathing waves normal to its midplane within 2 kiloparsecs of our position within the disk. There also appear to be bending waves or corrugations at larger Galactocentric radii. These waves may be linked to other time-dependent disk phenomena such as the bar, spiral structure, and warp, or they may be the result of a passing dark matter subhalo or dwarf galaxy. Here, we d

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28

Stelea, Ioana A., Jason A. S. Hunt, and Kathryn V. Johnston. "The Milky Way’s Rowdy Neighbors: The Effects of the Large Magellanic Cloud and Sagittarius Dwarf on the Milky Way Disk." Astrophysical Journal 977, no. 2 (2024): 252. https://doi.org/10.3847/1538-4357/ad901b.

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Abstract The Milky Way (MW) is a barred spiral galaxy shaped by tidal interactions with its satellites. The Large Magellanic Cloud (LMC) and the Sagittarius dwarf galaxy (Sgr) are the dominant influences at the present day. This paper presents a suite of four 109 particle N-body simulations, illustrating the response of the stellar disk of the MW to the close approach of the LMC and the merger of Sgr into the MW. The suite is intended to provide a resource for others to study the complex interactions between the MW and its satellites independently and together, in comparison to an isolated dis

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Hedman, M. M., J. A. Burns, and M. R. Showalter. "Corrugations and eccentric spirals in Saturn’s D ring: New insights into what happened at Saturn in 1983." Icarus 248 (March 2015): 137–61. http://dx.doi.org/10.1016/j.icarus.2014.10.021.

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30

Lotito, Valeria, Urs Sennhauser, Christian Hafner, and Gian-Luca Bona. "Fully Metal-Coated Scanning Near-Field Optical Microscopy Probes with Spiral Corrugations for Superfocusing under Arbitrarily Oriented Linearly Polarised Excitation." Plasmonics 6, no. 2 (2011): 327–36. http://dx.doi.org/10.1007/s11468-011-9208-5.

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31

Lee, Jin-Yul, Dah-Luen Huang, Richard Keep, and Oren Sagher. "Effect of electrical stimulation of the cervical spinal cord on blood flow following subarachnoid hemorrhage." Journal of Neurosurgery 109, no. 6 (2008): 1148–54. http://dx.doi.org/10.3171/jns.2008.109.12.1148.

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Object Cervical spinal cord stimulation (SCS) increases global cerebral blood flow (CBF) and ameliorates cerebral ischemia according to a number of experimental models as well as some anecdotal reports in humans. Nonetheless, such stimulation has not been systematically applied for use in cerebral vasospasm. In the present study the authors examined the effect of cervical SCS on cerebral vasoconstriction in a double-hemorrhage model in rats. Methods Subarachnoid hemorrhage (SAH) was induced with 2 blood injections through an indwelling catheter in the cisterna magna. Spinal cord stimulation wa

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Widrow, Lawrence M., David W. Hogg, Danny Horta, Haochaun Li, and Adrian M. Price-Whelan. "An Equilibrium Model of the Galaxy Determined by Element Abundance Gradients." Astrophysical Journal 983, no. 2 (2025): 134. https://doi.org/10.3847/1538-4357/adbf12.

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Abstract We present a method to determine the gravitational potential of the Milky Way from measurements of the locations, velocities, and element abundances of stars in the Galactic disk. The method relies on the assumption that the Galaxy is axisymmetric and stationary and that element abundance ratios such as [Fe/H] and [Mg/Fe] are smooth functions of three isolating integrals of motion. We use Fisher Information theory to predict the efficacy of individual abundance ratios to constrain the potential. We also use N-body simulations to test the extent by which secular evolution in the disk i

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Vore, Claudia, Felicitas Huber, Tyler A. Toledo, and Jamie L. Rhudy. "The Impact of Emotion Regulation on the Emotional Modulation of Cortical Potentials in Response to Nociceptive Input." Journal of Psychophysiology 39, no. 1 (2025): 15–35. https://doi.org/10.1027/0269-8803/a000344.

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Abstract: Emotions impact pain; appetitive (pleasant) emotions reduce pain, and aversive (unpleasant) emotions increase pain. Emotion regulation (ER) strategies can alter emotional experience, and we have shown that ER can alter emotional modulation of pain, but not emotional modulation of spinal nociception (as assessed by nociceptive flexion reflex, NFR). The current study examined whether ER influences the emotional modulation of cortical event-related potentials (ERPs) in response to nociceptive input. To investigate, 68 pain-free individuals viewed pleasant (erotic), neutral, and unpleasa

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Djordjevic, Milan, Marko Mancic, Velimir Stefanovic, and Mica Vukic. "Numerical investigation of heat transfer in spirally coiled corrugated pipes: Assessment of turbulence models." Thermal Science, no. 00 (2023): 184. http://dx.doi.org/10.2298/tsci230520184d.

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The Archimedean spiral coil made of a transversely corrugated pipe represents the radiant heat absorber of a parabolic dish solar concentrator. The main advantage of the considered design is the coupling of two passive methods for heat transfer enhancement - coiling the flow channel and changing the surface roughness. The aim of this numerical study is to assess the capability of Reynolds-averaged Navier-Stokes models of different complexity (Realizable k-?, SST k-? and RSM Linear Pressure-Strain) to adequately represent the heat transfer phenomena in the considered complex flow geometry for w

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Toledo, Tyler A., Natalie Hellman, Edward W. Lannon, et al. "Anger Inhibition and Pain Modulation." Annals of Behavioral Medicine 53, no. 12 (2019): 1055–68. http://dx.doi.org/10.1093/abm/kaz016.

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Abstract Background The tendency to inhibit anger (anger-in) is associated with increased pain. This relationship may be explained by the negative affectivity hypothesis (anger-in increases negative affect that increases pain). Alternatively, it may be explained by the cognitive resource hypothesis (inhibiting anger limits attentional resources for pain modulation). Methods A well-validated picture-viewing paradigm was used in 98 healthy, pain-free individuals who were low or high on anger-in to study the effects of anger-in on emotional modulation of pain and attentional modulation of pain. P

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"Experimental study of the process of corrugation by local plastic deformation." Vestnik Mashinostroeniya, 2024, 55–57. http://dx.doi.org/10.36652/0042-4633-2024-103-1-55-57.

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The production of cylindrical shells with spiral corrugation of the inner surface is considered. A stamp developed for these purposes, its diagram and operating principle are presented. The general provisions of experimental studies, the chemical compositions of workpieces and their indicators of mechanical properties are determined. Parts with corrugation are obtained and their quality indicators are determined. Keywords corrugation, experiment, stamp, computer modeling, local plastic deformation

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Pisarenco, Maxim, Bas van der Linden, Arris Tijsseling, Emmanuel Ory, and Jacques Dam. "Friction Factor Estimation for Turbulent Flows in Corrugated Pipes with Rough Walls." Journal of Offshore Mechanics and Arctic Engineering 133, no. 1 (2010). http://dx.doi.org/10.1115/1.4001439.

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The motivation of the investigation is the critical pressure loss in cryogenic flexible hoses used for LNG transport in offshore installations. Our main goal is to estimate the friction factor for the turbulent flow in this type of pipes. For this purpose, two-equation turbulence models (k−ϵ and k−ω) are used in the computations. First, the fully developed turbulent flow in a conventional pipe is considered. Simulations are performed to validate the chosen models, boundary conditions, and computational grids. Then a new boundary condition is implemented based on the “combined” law of the wall.

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Binney, James. "Disc distortion revisited." Monthly Notices of the Royal Astronomical Society, November 5, 2024. http://dx.doi.org/10.1093/mnras/stae2481.

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Abstract We revisit the dynamics of razor-thin, stone-cold, self-gravitating discs. By recasting the equations into standard cylindrical coordinates, the linearised vertical dynamics of an exponential disc can be followed for several gigayears on a laptop in a few minutes. An initially warped disc rapidly evolves into a flat inner region and an outward-propagating spiral corrugation wave that rapidly winds up and would quickly thicken a disc with non-zero radial velocity dispersion. The Sgr dwarf galaxy generates a similar warp in the Galactic disc as it passes through pericentre, and the warp

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Vaytsekhovich, S. M., and Yu V. Vlasov. "Development of technology and equipment for manufacture of spiral profile through corrugations bellows." Blanking productions in mechanical engineering (press forging, foundry and other productions), 2022, 556–65. http://dx.doi.org/10.36652/1684-1107-2022-20-12-556-565.

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Criteria are defined and a method is proposed for selecting of the initial diameter and wall thickness of pipe blanks for the formation of spiral profile bellows depending on the specified parameters: the depth of the corrugations, their number and the angle of elevation of the helical line. The stress state of the pipe billet material at the point of greatest inflection depending on the profile of the deforming roller and the distribution of stresses along its thickness are studied. The profiling results of an experimental batch of 12-lead-in corrugations bellows are presented and the prospec

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Vaytsekhovich, S. M. "New design of misalignment compensator for working elements of rolling-drawing mill in manufacture of spiral-shaped pipes." Blanking productions in mechanical engineering (press forging, foundry and other productions), 2022, 408–13. http://dx.doi.org/10.36652/1684-1107-2022-20-9-408-413.

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The design of a device for eliminating of the misalignment of the working bodies of a rolling-drawing mill intended for the manufacture of long-numbered thin-walled pipe parts is proposed. The device eliminates distortions in the shape of the cross-section of grooved spiral-shaped pipes, sections of the tops of corrugations and longitudinal bending.

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Cores-Sarría, Lucía, Jingjing Han, Jessica G. Myrick, and Robert F. Potter. "The Effects of “Media Tech Neck”: The Impact of Spinal Flexion on Cognitive and Emotional Processing of Videos." Communication Research, April 17, 2023, 009365022211503. http://dx.doi.org/10.1177/00936502221150319.

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Adoption of mobile devices (e.g., smart phones and tablets) has popularized a neck-down posture during media consumption that is different from the traditional upright body posture for video viewing. A neck-down posture exerts substantial pressure upon the spine, and this posture has been previously linked to psychological effects. This study advances the literature by studying the impact of posture effects on processing audiovisual information. In a mixed design experiment ( N = 87), the effect of neck posture when viewing 24 video PSAs was tested using physiological and self-report measures.

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Scandola, Michele, Maddalena Beccherle, Rossella Togni, et al. "Topographic mapping of the sensorimotor qualities of empathic reactivity: A psychophysiological study in people with spinal cord injuries." Psychophysiology, February 19, 2024. http://dx.doi.org/10.1111/psyp.14547.

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AbstractThe experience of empathy for pain is underpinned by sensorimotor and affective dimensions which, although interconnected, are at least in part behaviorally and neurally distinct. Spinal cord injuries (SCI) induce a massive, below‐lesion level, sensorimotor body–brain disconnection. This condition may make it possible to test whether sensorimotor deprivation alters specific dimensions of empathic reactivity to observed pain. To explore this issue, we asked SCI people with paraplegia and healthy controls to observe videos of painful or neutral stimuli administered to a hand (intact) or

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Niu, Tianchao, Wenjin Gao, Ke Xu, Xue‐Sen Wang, and Miao Zhou. "Epitaxial Growth of Phosphorene on Cu Substrate: The Essential Role of Interface Strain." Advanced Functional Materials, December 10, 2024. https://doi.org/10.1002/adfm.202418743.

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AbstractTwo‐dimensional (2D) material epitaxially grown on a metal substrate with precise lattice registry and strong bonding can result in substantial strain within both the 2D layer and the metal surface. In turn, the strain energy has a pronounced influence on the morphology and physical properties of epitaxial films. Here, through a comprehensive approach by combining scanning tunneling microscopy and atomistic simulations, it is demonstrated that monolayer ultraflat blue phosphorene (blueP) and the topmost Cu(111) layer are in the perfect atomic registry. This Cu layer undergoes significa

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Toledo, Tyler A., Claudia N. Vore, Felicitas A. Huber, and Jamie L. Rhudy. "The effect of emotion regulation on the emotional modulation of pain and nociceptive flexion reflex." Pain, January 11, 2024. http://dx.doi.org/10.1097/j.pain.0000000000003127.

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Abstract Positive emotions inhibit pain, whereas negative emotions facilitate pain. Thus, many psychosocial interventions capitalize on this emotion–pain relationship to improve patients' abilities to regulate emotion (ie, reduce negative emotion, increase positive emotion), influence nociception, and manage pain. This study extended the existing literature to examine whether emotion regulation procedures could influence emotional modulation of the nociceptive flexion reflex (NFR), a marker of spinal nociception. To elicit emotion, 2 blocks of pleasant, neutral, and unpleasant pictures were pr

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