Results 31 to 40 of about 64,372 (201)
Virtual Multicrossings and Petal Diagrams for Virtual Knots and Links [PDF]
Journal of Knot Theory and its Ramfifications, Vol. 32, Issue 8
(2023) 2340001, 2021 Multicrossings, which have previously been defined for classical knots and links, are extended to virtual knots and links. In particular, petal diagrams are shown to exist for all virtual knots.
arxiv +1 more source
Determining the Contribution of Epidermal Cell Shape to Petal Wettability Using Isogenic Antirrhinum Lines [PDF]
, 2011 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
ABD Cassie +30 more
core +4 more sources
Frontiers in Plant Science, 2021 Camellia japonica petals are colorful, rich in anthocyanins, and possess important ornamental, edible, and medicinal value. However, the regulatory mechanism of anthocyanin accumulation in C. japonica is still unclear.
Mingyue Fu +10 more
doaj +1 more source
Polyploidy and the petal transcriptome of Gossypium [PDF]
BMC Plant Biology, 2014 Abstract Background Genes duplicated by polyploidy (homoeologs) may be differentially expressed in plant tissues. Recent research using DNA microarrays and RNAseq data have described a cacophony of complex expression patterns during development of cotton fibers, petals, and leaves.
Aditi Rambani +2 more
openaire +3 more sources
The angular derivative problem for petals of one-parameter semigroups in the unit disk [PDF]
arXiv, 2023 We study the angular derivative problem for petals of one-parameter semigroups of holomorphic self-maps of the unit disk. For hyperbolic petals we prove a necessary and sufficient condition for the conformality of the petal in terms of the intrinsic hyperbolic geometry of the petal and the backward dynamics of the semigroup.
arxiv
On Reconfiguring Tree Linkages: Trees can Lock [PDF]
, 2000 It has recently been shown that any simple (i.e. nonintersecting) polygonal chain in the plane can be reconfigured to lie on a straight line, and any simple polygon can be reconfigured to be convex.
Biedl, Therese +9 more
core +10 more sources
Bilateral superiorly based malar transposition flaps for nasal tip reconstruction: A case report
SAGE Open Medical Case Reports, 2021 The Peng flap was originally described in 1987 as a viable option for re-creation of the convexity of the dorsum and nasal tip in a one step. Defects extending into the sidewall can result in multi-stage procedures. Beustes-Stefanelli in 2015 published a
David B Roy +2 more
doaj +1 more source
Do Epigenetic Timers Control Petal Development?
Frontiers in Plant Science, 2021 Epigenetic modifications include histone modifications and DNA methylation; such modifications can induce heritable changes in gene expression by altering DNA accessibility and chromatin structure.
Ruirui Huang +3 more
doaj +1 more source
Conversion of leaves into petals in Arabidopsis [PDF]
Current Biology, 2001 More than 200 years ago, Goethe proposed that each of the distinct flower organs represents a modified leaf [1]. Support for this hypothesis has come from genetic studies, which have identified genes required for flower organ identity. These genes have been incorporated into the widely accepted ABC model of flower organ identity, a model that appears ...
Rosalinda Tapia-López +3 more
openaire +3 more sources
Petal number of torus knots using superbridge indices [PDF]
arXiv, 2022 A petal projection of a knot $K$ is a projection of a knot which consists of a single multi-crossing and non-nested loops. Since a petal projection gives a sequence of natural numbers for a given knot, the petal projection is a useful model to study knot theory. It is known that every knot has a petal projection.
arxiv