Results 11 to 20 of about 793 (200)
Genome-wide identification and characterization of the bHLH gene family and analysis of their potential relevance to chlorophyll metabolism in Raphanus sativus L [PDF]
BMC Genomics, 2022 Background Green-fleshed radish (Raphanus sativus L.) is an economically important root vegetable of the Brassicaceae family, and chlorophyll accumulates in its root tissues.
Ruihua Wang +4 more
doaj +2 more sources
Hypersurfaces in a conformally flat space with curvature collineation [PDF]
International Journal of Mathematics and Mathematical Sciences, 1991 We classify the shape operators of Einstein and pseudo Einstein hypersurfaces in a conformally flat space with a symmetry called curvature collineation. We solve the fundamental problem of finding all possible forms of non-diagonalizable shape operators.
K. L. Duggal, R. Sharma
doaj +2 more sources
Finding the Collineation Between two Projective Reconstructions [PDF]
, 1998 The problem of finding the collineation between two 3-D projective reconstructions has been proved to be useful for a variety of tasks such as calibration of a stereo rig and 3-D affine and/or Euclidean reconstruction.
Radu Horaud +2 more
core +4 more sources
WEYL COLLINEATIONS THAT ARE NOT CURVATURE COLLINEATIONS [PDF]
International Journal of Modern Physics D, 2005 Though the Weyl tensor is a linear combination of the curvature tensor, Ricci tensor and Ricci scalar, it does not have all and only the Lie symmetries of these tensors since it is possible, in principle, that "asymmetries cancel." Here we investigate if, when and how the symmetries can be different.
Hussain, Ibrar +2 more
openaire +3 more sources
Frontiers of Architectural Research, 2022 The Imperial Citadel of Thang Long is a crucial case in ancient Vietnam's planning and design history. Although historical materials indicate that the orientation of the Imperial Citadel of Thang Long has a dialectical unity relationship with the ...
Theanh Dinh, Xiaogeng Ren
doaj +1 more source
A 1 × 48 large‐scale multi‐mode fibre optical switch
IET Optoelectronics, Volume 16, Issue 6, Page 253-256, December 2022., 2022 Abstract A 1 × 48 large‐scale multi‐mode fibre (MMF) optical switch driven by a stepper motor is reported. The insertion loss is <1.42 dB, which can be further reduced to 1.02 dB after optimisation. With the employment of a corner cube prism in the optics, the device is characterised by good repeatability of <±0.01 dB.
Zhentian Shan, Zhujun Wan, Zhixiang Luo
wiley +1 more source
2-elements in an Autotopism Group of a Semifield Projective Plane
Известия Иркутского государственного университета: Серия "Математика", 2022 We investigate the well-known hypothesis of D.R. Hughes that the full collineation group of non-Desarguesian semifield projective plane of a finite order is solvable (the question 11.76 in Kourovka notebook was written down by N.D. Podufalov). The spread
Olga Kravtsova
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African Journal of Ecology, Volume 60, Issue 4, Page 1133-1142, December 2022., 2022 Abstract Artemisia afra was identified as an encroaching shrub in the Klipriviersberg Nature Reserve (KNR). Ecological factors that influence the encroachment of A. afra and its population structure were unknown, making it difficult to monitor and control the spread of the plant.
Kgalalelo T. A. Setshedi +2 more
wiley +1 more source
The minimum degree of minimal Ramsey graphs for cliques
Bulletin of the London Mathematical Society, Volume 54, Issue 5, Page 1827-1838, October 2022., 2022 Abstract We prove that sr(Kk)=O(k5r5/2)$s_r(K_k) = O(k^5 r^{5/2})$, where sr(Kk)$s_r(K_k)$ is the Ramsey parameter introduced by Burr, Erdős and Lovász in 1976, which is defined as the smallest minimum degree of a graph G$G$ such that any r$r$‐colouring of the edges of G$G$ contains a monochromatic Kk$K_k$, whereas no proper subgraph of G$G$ has this ...
John Bamberg +2 more
wiley +1 more source
ρ‐Einstein Solitons on Warped Product Manifolds and Applications
Journal of Mathematics, Volume 2022, Issue 1, 2022., 2022 The purpose of this research is to investigate how a ρ‐Einstein soliton structure on a warped product manifold affects its base and fiber factor manifolds. Firstly, the pertinent properties of ρ‐Einstein solitons are provided. Secondly, numerous necessary and sufficient conditions of a ρ‐Einstein soliton warped product manifold to make its factor ρ ...
Nasser Bin Turki +5 more
wiley +1 more source