Gioncu V., Petcu D. Available rotation capacity of wide-flange beams and beam-columns, Part 1, Theoretical approaches, Part 2, Experimental and numerical tests, Journal of Constructional Steel Research , Vol. 43
Authors:A. Nemes, Z. Kovács, Á. Kormányos, P. Domsik, A. Kalapos, Z. Ajtay, and C. Lengyel
Introduction Left ventricular (LV) twist is considered an essential part of LV function due to oppositely directed LV basal and apical rotation [ 8, 11 ]. Non-invasive techniques such as magnetic resonance imaging and three-dimensional (3D) speckle
Among forced-flow layer chromatographic techniques, the centrifugally-driven variety was first developed, and named centrifugal layer chromatography, in 1947 by Hopf. In the 1980s Nyiredy further developed the technique and renamed it rotation planar chromatography. This paper summarizes the classifications and applicability of versions of this technique.
Timber joints are usually considered as perfectly pinned or stiff against rotation during the calculations of engineering timber structures. However the semi-rigid behavior the joints cannot be avoided in case of accurate calculations. In this paper the rotational stiffness and the full moment-rotational behavior of dowel-type timber joints were analyzed using computer algorithm validated by finite element analysis. Based on the numerical calculation and the experimental results the paper describes the influences of the joint geometry, the grain direction and the number and position of connectors on the moment-rotational behavior.
The ammonium ion in the alkali halide lattice has the hindered rotational state. The rotational potential is expressed as
crystal field, which depends upon only one rotational motion. The tetrahedral ion receives an octahedral field in this system.
Four fundamental types of orientation appear due to the symmetry of ion and that of field. As the barrier height increases,
the rotational levels approach to the librational levels with tunnel splitting. In particular, the tunneling part in the ground
librational level is calculated using both free rotor bases and orientationally localized states. The level structure with
the degeneracy is elucidated, which is peculiar in each type of orientation. Thermal properties are shown as model calculations.
Authors:B.L. Béres, N.Z. Lupwayi, F.J. Larney, B. Ellert, E.G. Smith, T.K. Turkington, D. Pageau, K. Semagn, and Z. Wang
Research indicates that not all crops respond similarly to cropping diversity and the response of triticale (× Triticosecale ssp.) has not been documented. We investigated the effects of rotational diversity on cereals in cropping sequences with canola (Brassica napus L.), field pea (Pisum sativum L.), or an intercrop (triticale:field pea). Six crop rotations were established consisting of two, 2-yr low diversity rotations (LDR) (continuous triticale (T-T_LDR) and triticale-wheat (Triticum aestivum L.) (T-W_LDR)); three, 2-yr moderate diversity rotations (MDR) (triticale-field pea (T-P_MDR), triticale-canola (T-C_MDR), and a triticale: field pea intercrop (T- in P_MDR)); and one, 3-yr high diversity rotation (HDR) (canola-triticale-field pea (C-T-P_HDR)). The study was established in Lethbridge, Alberta (irrigated and rainfed); Swift Current (rainfed) and Canora (rainfed), Saskatchewan, Canada; and carried out from 2008 to 2014. Triticale grain yield for the 3-yr HDR was superior over the LDR rotations and the MDR triticale-field pea system; however, results were similar for triticale-canola, and removal of canola from the system caused a yield drag in triticale. Triticale biomass was superior for the 3-yr HDR. Moreover, along with improved triticale grain yield, the 3-yr HDR provided greater yield stability across environments. High rotational diversity (C-T-P_HDR) resulted in the highest soil microbial community and soil carbon concentration, whereas continuous triticale provided the lowest. Net economic returns were also superior for C-T-P_HDR ($670 ha–1) and the lowest for T-W_LDR ($458 ha–1). Overall, triticale responded positively to increased rotational diversity and displayed greater stability with the inclusion of field pea, leading to improved profitability and sustainability of the system.
The neutron attenuation coefficient is determined in a double axis rotational system. The difference between a fixed system
and a double axis rotational system is shown and curves for the neutron attenuation coefficient for the last case are drawn.
The attenuated flux inside the sample is also drawn.