Results 61 to 70 of about 55,426 (293)
$O(\log^2k/\log\log{k})$-Approximation Algorithm for Directed Steiner Tree: A Tight Quasi-Polynomial-Time Algorithm [PDF]
, 2018 In the Directed Steiner Tree (DST) problem we are given an $n$-vertex directed edge-weighted graph, a root $r$, and a collection of $k$ terminal nodes.
An +6 more
core +3 more sources
Nordic Journal of Botany, EarlyView.Phyllanthus asteranthos Croizat has been treated as a synonym of P. pulcher Wall. ex Müll. Arg. (syn. Nymphanthus glaucescens (Miq.) R.W.Bouman) since 1987. Through detailed morphological observations of living plants and critical examinations of type materials and additional specimens, this study revealed that the two taxa are morphologically very ...
Feng Yang +2 more
wiley +1 more source
Breynia phuongiana (Phyllanthaceae), a new species from the Central Highlands of Vietnam
Nordic Journal of Botany, EarlyView.A new species, Breynia phuongiana (Phyllanthaceae subgen. Sauropus), is described and illustrated from the Central Highlands of Vietnam. It is morphologically similar to B. beillei, B. bonii, and B. thorelii, but differs in having oblong‐elliptic leaves, sepals marked with reddish striations, an androphore exceeding 1 mm in length, and distinctly ...
Van Canh Nguyen +6 more
wiley +1 more source
SAGE OpenWhile infertility and fertility treatment cause significant psychological distress for many women, the effectiveness of existing psychological interventions is unproven.
Andria Aiello +5 more
doaj +1 more source
Taxonomic reappraisal of the mangrove genus Avicennia (Acanthaceae) in India
Nordic Journal of Botany, EarlyView.A taxonomic reappraisal of the mangrove genus Avicennia in India was undertaken through extensive field surveys and critical examination of herbarium specimens. Three taxa, Avicennia alba, Avicennia marina subsp. marina, and Avicennia officinalis, are described in detail. A synonymic list was compiled using the World Checklist of Vascular Plants (WCVP)
Subrata Mondal, Saikat Naskar
wiley +1 more source
Frontiers in Plant Science, 2017 miRNAs are important regulators involving in plant-pathogen interactions. However, their roles in apple tree response to Valsa canker pathogen (Valsa mali, Vm) infection were poorly understood.
Hao Feng +5 more
doaj +1 more source
Classical and consecutive pattern avoidance in rooted forests
, 2020 Following Anders and Archer, we say that an unordered rooted labeled forest avoids the pattern $\sigma\in\mathcal{S}_k$ if in each tree, each sequence of labels along the shortest path from the root to a vertex does not contain a subsequence with the ...
Garg, Swapnil, Peng, Alan
core
Investigation into Indexing XML Data Techniques [PDF]
, 2014 The rapid development of XML technology improves the WWW, since the XML data has many advantages and has become a common technology for transferring data cross the internet.
Joan, Lu, Klaib, Alhadi
core
Foliar and wood traits covary along a vertical gradient within the crown of long-lived light-demanding species of the Congo Basin semi-deciduous forest [PDF]
, 2019 Plant functional traits have shown to be relevant predictors of forest functional responses to climate change. However, the trait-based approach to study plant performances and ecological strategies has mostly been focused on trait comparisons at the ...
Beeckman, Hans +8 more
core +2 more sources
Nordic Journal of Botany, EarlyView.Based on morphological evidence three new deciduous species of Berberis are proposed – Berberis pseudovirescens, Berberis orbicularis and Berberis tawangensis,the types being collected in the Tawang and West Kameng districts of Arunachal Pradesh, India.
Bipankar Hajong +2 more
wiley +1 more source