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Journal articles on the topic 'Rotational part'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

Mottershead, John E., Andreas Kyprianou, and Huajiang Ouyang. "Structural modification. Part 1: rotational receptances." Journal of Sound and Vibration 284, no. 1-2 (2005): 249–65. http://dx.doi.org/10.1016/j.jsv.2004.06.021.

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2

Stepanian, N. N. "Coronal Holes and Background Magnetic Fields on the Sun." International Astronomical Union Colloquium 144 (1994): 61–64. http://dx.doi.org/10.1017/s0252921100025008.

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AbstractSize, lifetime and rotational rate of coronal holes (CH) and their connection with background magnetic field (BMF) structures were studied on the base of Solar Geophysical Data (1977-1987).Mean sizes of CH are (1-3) × 1011cm, changing with solar cycle and latitude. Mean life time is 5 rotations. Only small part of CH has rigid rotation. Most of them show differential rotation. CH appear in structures of BMF with the sign of polar magnetic field of corresponding hemisphere about 5-10 rotations after polar field reversal. Rotation rates of CH and BMF near the solar equator are almost the

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3

Nemes, A., Z. Kovács, Á. Kormányos, et al. "Left ventricular apical rotation is associated with mitral annular function in healthy subjects. Results from the three-dimensional speckle-tracking echocardiographic MAGYAR-Healthy Study." Physiology International 107, no. 1 (2020): 145–54. http://dx.doi.org/10.1556/2060.2020.00002.

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AbstractIntroductionLeft ventricular (LV) twist is considered an essential part of LV function due to oppositely directed LV basal and apical rotations. Several factors could play a role in determining LV rotational mechanics in normal circumstances. This study aimed to investigate the relationship between LV rotational mechanics and mitral annular (MA) size and function in healthy subjects.MethodsThe study comprised 118 healthy adult volunteers (mean age: 31.5 ± 11.8 years, 50 males). All subjects had undergone complete two-dimensional (2D) Doppler echocardiography and three-dimensional speck

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4

Daskopoulos, P., and A. M. Lenhoff. "Flow in curved ducts. Part 2. Rotating ducts." Journal of Fluid Mechanics 217 (August 1990): 575–93. http://dx.doi.org/10.1017/s0022112090000854.

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When a coiled tube is rotated about the coil axis, the effects of rotation interact with centrifugal and viscous effects to complicate the flow characteristics beyond those seen in stationary curved ducts. The phenomena encountered are examined for steady, fully developed Newtonian flow in circular tubes of small curvature. The governing equations are solved using orthogonal collocation, and the results presented cover both the nature of the flow and the bifurcation structure. When rotation is in the same direction as the axial flow imposed by a pressure gradient, the flow structure remains si

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5

Schlaak, Hans-Joachim. "Excitation of Low-Frequency Rotational Vibration." Journal of Low Frequency Noise, Vibration and Active Control 12, no. 4 (1993): 123–27. http://dx.doi.org/10.1177/026309239301200402.

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Special exciters are necessary to calibrate angular accelerometers, angular velocimeters and rotational angle transducers. This paper presents methods designed for the generation of low-frequency uniaxial rotational quantities. The operating principle, the construction and the technical characteristics of the rotational exciters are described. The air-borne rotational exciters (prototypes) allow sinusoidal angular vibrations in the frequency range from 0.5 to 1000 Hz to be generated. Another mode of operation is the excitation of sinusoidal vibrations by the rotation of the moving exciter part

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6

LI, RONG-K. WEI. "A part-feature recognition system for rotational parts." International Journal of Production Research 26, no. 9 (1988): 1451–75. http://dx.doi.org/10.1080/00207548808947959.

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7

Slătineanu, Laurenţiu, Oana Dodun, Margareta Coteaţă, Gheorghe Nagîţ, and Irina Beşliu. "Simplified Version of Polymer Rotational Molding Manufacturing Method." Key Engineering Materials 699 (July 2016): 97–103. http://dx.doi.org/10.4028/www.scientific.net/kem.699.97.

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Rotational molding is a manufacturing method which supposes the rotation of the mold, during the solidification of the liquid phase material, so that finally a part having a hollow could be obtained. The method could be applied in manufacturing of metallic and nonmetallic parts. Usually, the equipment for rotational molding ensures slow speed rotating of the mold around two axes placed perpendicularly each other and this fact led to relatively complex equipment for achieving rotational molding. The capacity of the liquid material to entirely cover the internal walls of the mold depends essenti

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8

CZINNER, VIKTOR G., and MÁTYÁS VASÚTH. "REVISITING ROTATIONAL PERTURBATIONS AND THE MICROWAVE BACKGROUND." International Journal of Modern Physics D 16, no. 11 (2007): 1715–23. http://dx.doi.org/10.1142/s0218271807011176.

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We consider general-relativistic rotational perturbations in homogeneous and isotropic Friedmann–Robertson–Walker (FRW) cosmologies. Taking linear perturbations of FRW models, the general solution to the field equations contains tensorial, vectorial and scalar functions. The vectorial terms are in connection with rotations in the given model and due to the Sachs–Wolfe effect they produce contributions to the temperature fluctuations of the cosmic microwave background radiation (CMBR). In this paper we obtain the analytic time dependence of these contributions in a spatially flat FRW model with

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9

Tian, Shuling, Yisheng Gao, Xiangrui Dong, and Chaoqun Liu. "Definitions of vortex vector and vortex." Journal of Fluid Mechanics 849 (June 18, 2018): 312–39. http://dx.doi.org/10.1017/jfm.2018.406.

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Although the vortex is ubiquitous in nature, its definition is somewhat ambiguous in the field of fluid dynamics. In this absence of a rigorous mathematical definition, considerable confusion appears to exist in visualizing and understanding the coherent vortical structures in turbulence. Cited in the previous studies, a vortex cannot be fully described by vorticity, and vorticity should be further decomposed into a rotational and a non-rotational part to represent the rotation and the shear, respectively. In this paper, we introduce several new concepts, including local fluid rotation at a po

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10

Kalita, W., N. Yegani, Cz M. Rodkiewicz, and J. S. Kennedy. "On the Laminar Flow Characteristics of Conical Bearings. Part II—Experimental Verification." Journal of Tribology 108, no. 1 (1986): 59–64. http://dx.doi.org/10.1115/1.3261144.

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The laminar flow characteristics of the externally pressurized central recess conical bearings with narrow gaps, predicted theoretically in Part I of this paper, have been verified experimentally. Two main effects on the performance of conical bearings have been investigated, namely: the effect of nonconstant film thickness along the gap of the bearing and the effect of rotation. It was found that experimental pressure distributions and load capacity of the constant and divergent gap bearings were in close agreement with the theoretical data for the low rotational velocities however, with the

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11

Hiremath, K. M. "Internal Rotation of AB Doradus." Symposium - International Astronomical Union 195 (2000): 399–400. http://dx.doi.org/10.1017/s0074180900163272.

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Using Chandrasekhar's MHD equations, we solve for the steady part of the internal rotation of AB Doradus. We estimate the size of the convective envelope to be ~ 40% of the radius and the rotation velocity at the base to be not less than 1.42 × 10−4 rad/sec. This study also yields the steady part of the toroidal magnetic field which is distributed throughout the convective envelope. We present rotational and toroidal magnetic field profiles in the interior and conjecture on the time-dependent part of the magnetic field.

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12

Sikora, Janusz W., Łukasz Majewski, and Andrzej Puszka. "Modern Biodegradable Plastics—Processing and Properties Part II." Materials 14, no. 10 (2021): 2523. http://dx.doi.org/10.3390/ma14102523.

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Four different plastics were tested: potato starch based plastic (TPS-P)–BIOPLAST GF 106/02; corn starch based plastic (TPS-C)–BioComp BF 01HP; polylactic acid (polylactide) plastic (PLA)—BioComp BF 7210 and low density polyethylene, trade name Malen E FABS 23-D022; as a petrochemical reference sample. Using the blown film extrusion method and various screw rotational speeds, films were obtained and tested, as a result of which the following were determined: breaking stress, strain at break, static and dynamic friction coefficient of film in longitudinal and transverse direction, puncture resi

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13

GEČYS, Tomas, and Alfonsas DANIŪNAS. "ROTATIONAL STIFFNESS DETERMINATION OF THE SEMI-RIGID TIMBER-STEEL CONNECTION." Journal of Civil Engineering and Management 23, no. 8 (2017): 1021–28. http://dx.doi.org/10.3846/13923730.2017.1374305.

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In this research, the component method implementation for determination of the rotational stiffness of timber-steel connection is shown. Component method is one of the most commonly used methods for determination of the bending moment-rotation relation which later may be used in the practical analysis of the connection. The component method is not widely used for the analysis of the semi-rigid timber connections. There are only several investigations previously done on the component method implementation for the timber connections and most of them are based on only one basic component, i.e. ti

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14

Cheng, Kuo Ming, and Jhy Cherng Tsai. "Graph-Based Process Planning for Rotational Part Machined with Tolerancing." Applied Mechanics and Materials 52-54 (March 2011): 1824–29. http://dx.doi.org/10.4028/www.scientific.net/amm.52-54.1824.

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This paper investigates a methodology and corresponding graph modeling of process planning for cylindrical machined parts with tolerancing. Methods and techniques for representing possible process plans, reducing the complexity and eliminating over-toleranced plans are developed. The method first maps each feature of a part into feasible finishing processes that are capable to achieve the specified tolerances associated with the feature. All possible process plans are then developed by expanding preceding processes of each finishing process. The expanded processes form a graph, or a forest, wi

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15

Crowther, Sarah A., and John M. Brown. "The 313nm band system of SeO2. Part 2: rotational structure." Journal of Molecular Spectroscopy 225, no. 2 (2004): 206–21. http://dx.doi.org/10.1016/j.jms.2004.03.006.

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16

Hummel, Christoph. "Rank one lattices whose parabolic isometries have no rotational part." Proceedings of the American Mathematical Society 126, no. 8 (1998): 2453–58. http://dx.doi.org/10.1090/s0002-9939-98-04289-0.

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17

Winther, G., and O. Kramer. "A non-rotational universal rheometer: Part I. description of instrument." Polymer Testing 10, no. 3 (1991): 161–74. http://dx.doi.org/10.1016/0142-9418(91)90029-w.

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18

Raghuveer, HP, M. Hemanth, MS Rani, Chathura Hegde, B. Vedavathi, and D. Chaithra. "An Analysis of the Stress induced in the Periodontal Ligament during Extrusion and Rotation Movements— Part II: A Comparison of Linear vs Nonlinear FEM Study." Journal of Contemporary Dental Practice 16, no. 10 (2015): 819–23. http://dx.doi.org/10.5005/jp-journals-10024-1763.

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ABSTRACT Background Optimal orthodontic forces are those which stimulate tooth movement with minimal biological trauma to the tooth, periodontal ligament (PDL) during and alveolar bone. Among various types of tooth movements, extrusion and rotational movements are seen to be associated with the least amount of root resorption and have not been studied in detail. The mechanical behavior of the PDL is known to be nonlinear elastic and thus a nonlinear simulation of the PDL provides precision to the calculated stress values. Therefore in this study, the stress patterns in the PDL were evaluated w

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Raghuveer, HP, M. Hemanth, MS Rani, Chathura Hegde, B. Vedavathi, and D. Chaithra. "An Analysis of the Stress Induced in the Periodontal Ligament during Extrusion and Rotation Movements: A Finite Element Method Linear Study Part I." Journal of Contemporary Dental Practice 16, no. 9 (2015): 740–43. http://dx.doi.org/10.5005/jp-journals-10024-1750.

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ABSTRACT Background Orthodontic tooth movement occurs due to various biomechanical changes in the periodontium. Forces within the optimal range yield maximum tooth movement with minimum deleterious effects. Among various types of tooth movements, extrusion and rotational movements are seen to be associated with the least amount of root resorption and have not been studied in detail. Therefore in this study, the stress patterns in the periodontal ligament (PDL) were evaluated with extrusion and rotational movements using the finite element method FEM. Materials and methods A three-dimensional (

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20

Stango, R. J., V. Cariapa, A. Prasad, and S. K. Liang. "Measurement and Analysis of Brushing Tool Performance Characteristics, Part 1: Stiffness Response." Journal of Engineering for Industry 113, no. 3 (1991): 283–89. http://dx.doi.org/10.1115/1.2899698.

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In the first part of this paper, an experimental system is described which was developed and used for measuring compliant tool performance characteristics. Elementary mechanics considerations and signal-response characteristics of the experimental apparatus for orthogonal brushing are briefly outlined and discussed. The fundamental nature of wire brush stiffness properties and kinetic friction coefficients for orthogonal brush-workpart contact are determined for a range of rotational speeds, and the results are compared to those obtained on the basis of a recently developed (quasi-static) theo

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21

Tweed, D., D. Sievering, H. Misslisch, M. Fetter, D. Zee, and E. Koenig. "Rotational kinematics of the human vestibuloocular reflex. I. Gain matrices." Journal of Neurophysiology 72, no. 5 (1994): 2467–79. http://dx.doi.org/10.1152/jn.1994.72.5.2467.

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1. This series of three papers aims to describe the three-dimensional, kinematic input-output relations of the rotational vestibuloocular reflex (VOR) in humans, and to identify the functional advantages of these relations. In this first paper the response to sinusoidal rotation in darkness at 0.3 Hz, maximum speed 37.5%/s, was quantified by the use of the three-dimensional analogue of VOR gain: a 3 x 3 matrix where each element describes the dependence of one component (torsional, vertical, or horizontal) of eye velocity on one component of head velocity. 2. The three matrix elements indicati

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22

Wenske, V., and D. Schönberner. "Influence of Rotation on the Stellar Parameters." International Astronomical Union Colloquium 137 (1993): 162–64. http://dx.doi.org/10.1017/s0252921100017668.

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For several years it has become quite common to derive stellar parameters like effective temperature, Teff, and surface acceleration, g, by means of properly calibrated photometric indices, and to use these values for the derivation of important properties of stellar aggregates (viz. ages, star formation history, distances, etc.). Photometric observations, however, fail to give informations about one important property of a star: its rotational rate!The main effect of rotation is to increase the size of the star, mainly in the equatorial region, leading to lower surface temperatures and accele

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23

Avitzur, Betzalel, and Waclaw Pachla. "The Upper Bound Approach to Plane Strain Problems Using Linear and Rotational Velocity Fields—Part I: Basic Concepts." Journal of Engineering for Industry 108, no. 4 (1986): 295–306. http://dx.doi.org/10.1115/1.3187080.

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This paper investigates an upper bound approach to plane strain deformation of a rigid, perfectly plastic material. In this approach the deformation region is divided into a finite number of rigid triangular bodies that slide with respect to one another. Neighboring rigid body zones are analyzed in specific cases where the zones are (1) both in rotational motion, (2) one in linear, the other in rotational motion and (3) both in linear motion. Specific equations are presented that describe surfaces of velocity discontinuity (shear boundaries) between the moving bodies, and the velocity disconti

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24

Zhao, Lihao, Niranjan R. Challabotla, Helge I. Andersson, and Evan A. Variano. "Mapping spheroid rotation modes in turbulent channel flow: effects of shear, turbulence and particle inertia." Journal of Fluid Mechanics 876 (July 31, 2019): 19–54. http://dx.doi.org/10.1017/jfm.2019.521.

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The rotational behaviour of non-spherical particles in turbulent channel flow is studied by Lagrangian tracking of spheroidal point particles in a directly simulated flow. The focus is on the complex rotation modes of the spheroidal particles, in which the back reaction on the flow field is ignored. This study is a sequel to the letter by Zhao et al. (Phys. Rev. Lett., vol. 115, 2015, 244501), in which only selected results in the near-wall buffer region and the almost-isotropic channel centre were presented. Now, particle dynamics all across the channel is explored to provide a complete pictu

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25

Seidelman, Kennet P., M. F. A'HEARN, D. P. CRUIKSHANK, et al. "Working Group on Cartographic Coordinates and Rotational Elements." Proceedings of the International Astronomical Union 1, T26A (2005): 181. http://dx.doi.org/10.1017/s1743921306004492.

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The 2003 report of the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements has appeared in Celestial Mechanics and Dynamical Astronomy(2005)volume 91, part 3–4, pages 203–215. The Working Group continues to maintain and update the information for cartographic coordinates and rotational elements for the Sun, Moon, planets, satellites, asteroids, and comets. A report is published treannually. A web site is maintained at http://extranet.astrogeology.wr.usgs.gov/Projects/WGCCRE with the up-to-date information. It is anticipated that the next report will include updates for Sa

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Yamaga, Tamotsu, Masayuki Ohara, Masataka Uji, et al. "Clasping system with rotational path of insertion. Part 3. Clinical application." Nihon Hotetsu Shika Gakkai Zasshi 34, no. 6 (1990): 1085–90. http://dx.doi.org/10.2186/jjps.34.1085.

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27

Yunus, Shah M., Timothy P. Pawlak, and Robert D. Cook. "Solid elements with rotational degrees of freedom: Part 1—hexahedron elements." International Journal for Numerical Methods in Engineering 31, no. 3 (1991): 573–92. http://dx.doi.org/10.1002/nme.1620310310.

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28

Pawlak, Timothy P., Shah M. Yunus, and Robert D. Cook. "Solid elements with rotational degrees of freedom: Part II—tetrahedron elements." International Journal for Numerical Methods in Engineering 31, no. 3 (1991): 593–610. http://dx.doi.org/10.1002/nme.1620310311.

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29

Winther, G., I. Larsson, and O. Kramer. "A non-rotational universal rheometer. Part II. Experimental procedures and results." Polymer Testing 10, no. 4 (1991): 263–77. http://dx.doi.org/10.1016/0142-9418(91)90021-o.

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30

Piehslinger, Eva, Robert Marko Celar, Thomas Horejs, and Rudolph Slavicek. "Recording Orthopedic Jaw Movements. Part IV: The Rotational Component During Mastication." CRANIO® 12, no. 3 (1994): 156–60. http://dx.doi.org/10.1080/08869634.1994.11678012.

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31

LI, RONG-KWEI, and TAI-ZEN HWANG. "A part-feature recognition system for rotational parts—non-turning features." International Journal of Computer Integrated Manufacturing 2, no. 5 (1989): 257–67. http://dx.doi.org/10.1080/09511928908944411.

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32

B.M, Shinde, and Khodke P.M. "AMPPS_CNC in An Automated Modular Process Planning System for Rotational Part." International Journal of Recent advances in Mechanical Engineering 3, no. 4 (2014): 1–6. http://dx.doi.org/10.14810/ijmech.2014.3401.

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33

Das, D., and S. Santhakumar. "An Euler correction method for computing two-dimensional unsteady transonic flows." Aeronautical Journal 103, no. 1020 (1999): 85–94. http://dx.doi.org/10.1017/s0001924000027780.

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AbstractAn Euler correction method is developed for unsteady, transonic inviscid flows. The strategy of this method is to treat the flow-field behind the shock as rotational flow and elsewhere as irrotational flow. The solution for the irrotational flow is obtained by solving the unsteady full-potential equation using Jameson's rotated time-marching finite-difference scheme. Clebsch's representation of velocity is followed for rotational flow. In this representation the velocities are decomposed into a potential part and a rotational part written in terms of scalar functions. The potential par

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34

Chen, Hong Kai, Lan Tang, Xiao Ying He, and Rong Can Liu. "Model and Application on Displacement Calculation of Abutment by Considering Earthquake Effects." Advanced Materials Research 518-523 (May 2012): 3852–58. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.3852.

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The response characteristics to the seismic action of displacement for abutment are the important part of security evaluation, earthquake resistance and disaster mitigation in the seismic region. This paper decomposes the displacement of abutment into the slip displacement and rotation displacement two parts, respectively proposes the translational and rotational displacement model of abutment and establishes the corresponding calculation formulas. The case analysis indicates that the response characteristics of abutment displacement to the seismic action are comparatively sensitive, in which

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Chen, Hong Kai, Lan Tang, Xiao Ying He, and Rong Can Liu. "Model and Application on Displacement Calculation of Abutment by Considering Earthquake Effects." Applied Mechanics and Materials 226-228 (November 2012): 1297–303. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1297.

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The response characteristics to the seismic action of displacement for abutment are the important part of security evaluation, earthquake resistance and disaster mitigation in the seismic region. This paper decomposes the displacement of abutment into the slip displacement and rotation displacement two parts, respectively proposes the translational and rotational displacement model of abutment and establishes the corresponding calculation formulas. The case analysis indicates that the response characteristics of abutment displacement to the seismic action are comparatively sensitive, in which

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36

Mills, Paul D. A., Colin M. Western, and Brian J. Howard. "Rotational spectra of rare gas-nitric oxide van der Waals molecules. Part 1. Theory of the rotational energy levels." Journal of Physical Chemistry 90, no. 15 (1986): 3331–38. http://dx.doi.org/10.1021/j100406a007.

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37

Gong, Yu Fang, Hu Liu, and Xin Ying Li. "Design and Research of Rotational Inverted Pendulum Control System." Applied Mechanics and Materials 668-669 (October 2014): 466–69. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.466.

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The work is designed and made as a controlled system of rotational inverted pendulum. Small direct current machine is droved by Single chip microcomputer that it controls the angle of swinging of swinging rod when the rotating arm does reciprocating rotation motion. The MC9S12CXS128 single-chip microcomputer is adopted as the master control chip of control system, the Angle of swinging rod is measured by the incremental encoder, power of the rotary arm controlled part provided by PM35S - 048 direct current machine and the motor drive module as a control system. It can realize measurement and c

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38

Ranzan, Conrad. "Law of Physics 20th-Century Scientists Overlooked (Part 5): Centrifugal Effect Negation." Applied Physics Research 13, no. 2 (2021): 13. http://dx.doi.org/10.5539/apr.v13n2p13.

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Explored is another application of the phenomenally successful DSSU&rsquo;s aether theory of gravity. It is explained how rotational motion with respect to the universal space medium (aether) determines the centrifugal effect. The article details the conditions involved in the attenuation of the Effect; and the extreme condition under which complete negation occurs. Included is a description of how a totally collapsed star &mdash;called a Terminal neutron star&mdash; is unable to manifest any centrifugal effects; and how, consequently, it can have no theoretical limit on its rate o

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UGULAVA, A., L. CHOTORLISHVILI, T. GVARJALADZE, and S. CHKHAIDZE. "INVESTIGATION OF THE QUANTUM CHAOS OF INTERNAL ROTATIONAL MOTION IN POLYATOMIC MOLECULES." Modern Physics Letters B 21, no. 07 (2007): 415–30. http://dx.doi.org/10.1142/s0217984907012840.

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Polyatomic molecules can perform internal rotational motion of two types: torsional oscillation and free rotation of one part of the molecule with respect to the other part. On the phase plane, these two types of motion are separated by the separatrix. Phase trajectories, originated as a result of periodical external force action on the system, have stochastic nature. For quantum consideration, regarding the motion near to the classical separatrix, transition from the pure quantum-mechanical state to the mixed one takes place. Originating at that mixed state, this must be considered as the qua

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40

Bobrova, N. F., A. N. Dembovetskaya, and A. V. Shylyk. "Ipsilateral penetrating rotational autokeratoplasty: case report and literature review." Modern technologies in ophtalmology, no. 1 (May 29, 2021): 34–38. http://dx.doi.org/10.25276/2312-4911-2021-1-34-38.

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Purpose. To assess the features and results of post-traumatic reconstruction of the anterior part of the eye in a child with ipsilateral rotational autokeratoplasty (IRAK). Clinical case. Patient I. 5.5 years old, on the right eye performed a reconstructive surgery of the anterior part of the eye with IRAK, including synechiotomy, iridoplasty, phacoaspiration of traumatic cataract and implantation of an intraocular lens. The analysis of literature data has been carried out The restoration of the transparency of the optical axis and increase in visual functions were obtained – the diameter of t

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41

Auclair-Desrotour, P., J. Laskar, S. Mathis, and A. C. M. Correia. "The rotation of planets hosting atmospheric tides: from Venus to habitable super-Earths." Astronomy & Astrophysics 603 (July 2017): A108. http://dx.doi.org/10.1051/0004-6361/201628701.

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The competition between the torques induced by solid and thermal tides drives the rotational dynamics of Venus-like planets and super-Earths orbiting in the habitable zone of low-mass stars. The resulting torque determines the possible equilibrium states of the planet’s spin. Here we have computed an analytic expression for the total tidal torque exerted on a Venus-like planet. This expression is used to characterize the equilibrium rotation of the body. Close to the star, the solid tide dominates. Far from it, the thermal tide drives the rotational dynamics of the planet. The transition regim

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Tautges, Nicole E., Ian C. Burke, Kristy Borrelli, and E. Patrick Fuerst. "Competitive ability of rotational crops with weeds in dryland organic wheat production systems." Renewable Agriculture and Food Systems 32, no. 1 (2016): 57–68. http://dx.doi.org/10.1017/s1742170516000028.

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AbstractWhile demand continues to grow and prices for organic grains have remained almost double those of conventional grains, few growers in the dryland wheat production region of Eastern Washington produce organic grain. Growers have cited weed control constraints as a top factor preventing adoption of organic production practices. In organic systems, inherent competitive ability of crops is very important in managing and preventing weed infestations. The objective of this study was to identify crop species that could reduce weed pressure and compete with perennial weeds in a wheat (Triticum

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Ghindea, M., A. Cătărig, and R. Ballok. "Behavior Of Beam-To-Column Connections With Angles. Part 1-Experimental Investigations." Journal of Applied Engineering Sciences 5, no. 2 (2015): 21–28. http://dx.doi.org/10.1515/jaes-2015-0017.

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Abstract In this paper, four specimens of steel beam to column joints with different configuration of bolted angle connections are experimentally tested. The specimens are double sided beam to column connections and are tested under bending loading conditions in order to investigate elastic and inelastic connection behaviour. The semi-rigid beam-to-column connections were subjected to monotonous static loading. The bolted beam-to-column connections are composed from top and seat angle connections with and without web angles as well as with stiffened top and seat angle cleats. The intent of the

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Kalita, W., Cz M. Rodkiewicz, and J. S. Kennedy. "On the Laminar Flow Characteristics of Conical Bearings. Part I—Analytical Approach." Journal of Tribology 108, no. 1 (1986): 53–58. http://dx.doi.org/10.1115/1.3261143.

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An analysis has been made of the characteristics of externally pressurized central recess conical bearings with nonconstant film thickness under the assumption of isothermal laminar flow of a viscous incompressible fluid. The flow in the narrow gaps that may be convergent, constant, or divergent has been approximately determined on the basis of the lubrication theory with convective inertia neglected except for that part which is due to rotation. The pressure distribution along the gap, the load capacity, and the torque of the bearings, were theoretically predicted. It was found that, while th

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NAKAMURA, T., Y. YABE, and Y. HORIUCHI. "In Vivo MR Studies of Dynamic Changes in the Interosseous Membrane of the Forearm During Rotation." Journal of Hand Surgery 24, no. 2 (1999): 245–48. http://dx.doi.org/10.1054/jhsb.1998.0185.

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In vivo dynamic changes in the interosseous membrane (IOM) during forearm rotation were studied using magnetic resonance imaging (MRI). The right forearms of 20 healthy volunteers were examined in five different rotational positions. Axial slices were obtained at the proximal quarter, the middle and the distal quarter of the forearm. The changes in shape of the IOM during rotation were observed in an axial MR plane. For each image, we measured the interosseous distance and the length of the interosseous membrane. Images of the tendinous and membranous parts of the IOM could be differentiated b

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Cole, Alison G., Aniseh Mashkournia, Shawn C. Parries, and Jeffrey I. Goldberg. "Regulation of early embryonic behavior by nitric oxide in the pond snail Helisoma trivolvis." Journal of Experimental Biology 205, no. 20 (2002): 3143–52. http://dx.doi.org/10.1242/jeb.205.20.3143.

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SUMMARY Helisoma trivolvis embryos display a cilia-driven rotational behavior that is regulated by a pair of serotonergic neurons named ENC1s. As these cilio-excitatory motor neurons contain an apical dendrite ending in a chemosensory dendritic knob at the embryonic surface, they probably function as sensorimotor neurons. Given that nitric oxide (NO) is often associated with sensory neurons in invertebrates, and has also been implicated in the control of ciliary activity, we examined the expression of NO synthase (NOS) activity and possible function of NO in regulating the rotational behavior

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Flack, Ronald D., Steven B. Ainley, Klaus Brun, and Leonard Whitehead. "Laser Velocimeter Measurements in the Pump of an Automotive Torque Converter Part II – Effect of Pump Speed and Oil Viscosity." International Journal of Rotating Machinery 6, no. 3 (2000): 181–90. http://dx.doi.org/10.1155/s1023621x00000178.

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The velocity field inside a torque converter pump was studied for two separate effects: variable pump rotational speed and variable oil viscosity. Three-dimensional velocity measurements were taken using a laser velocimeter for both the pump mid- and exit planes. The effect ofvariable pump rotational speed was studied by running the pump at two different speeds and holding speed ratio (pump rotational speed]turbine rotational speed) constant. Similarly, the effect of viscosity on the pump flow field was studied by varying the temperature and]or using two different viscosity oils as the working

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Cheng, L., and Y. C. Qu. "Rotational Compliance Measurements of a Flexible Plane Structure Using an Attached Beam-like Tip, Part 1: Analysis and Numerical Simulation." Journal of Vibration and Acoustics 119, no. 4 (1997): 596–602. http://dx.doi.org/10.1115/1.2889767.

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The present paper describes a simple, indirect technique for measuring the rotational compliance of an attached thin-walled plane structure. The technique, called “Tip Excitation Technique (TET),” uses an L-shaped beam tip fixed at one point of the original structure where the rotational compliance is to be evaluated. The tip acts as a mechanical converter transforming an exciting force applied at the tip into an excitation moment applied to the original structure and reciprocally, to convert a rotational response into a translational one. The rotational compliance is evaluated using simple an

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Yamaga, Tamotsu, Masayuki Ohara, Kuniaki Tanaka, et al. "Clasping system with rotational path of insertion. Part 1 Retention of denture." Nihon Hotetsu Shika Gakkai Zasshi 31, no. 1 (1987): 213–19. http://dx.doi.org/10.2186/jjps.31.213.

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Piehslinger, Eva, Robert Marko Celar, Thomas Horejs, and Rudolph Slavicek. "Orthopedic Jaw Movement Observations Part II: The Rotational Capacity of the Mandible." CRANIO® 11, no. 3 (1993): 206–10. http://dx.doi.org/10.1080/08869634.1993.11677966.

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