Results 221 to 230 of about 96,632 (252)
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Counting Chemical Structures Resembling Trees
2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2018Trees have been used for counting chemical structures of non-isomorphic forms. Graph enumeration can be either isomorphic or non-isomorphic. Isomorphic tree enumeration arises in the context of listing all isomorphic subtrees of a given graph whereas non-isomorphic enumeration lists all unique trees that satisfy given constraints. We study the chemical
Athira Selvam +2 more
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Mining environmental chemicals with boosted trees
Proceedings of the 35th Annual ACM Symposium on Applied Computing, 2020In response to scientific reports and legislative actions, the United States Environmental Protection Agency (EPA) launched an Endocrine Disruptor Screening Program (EDSP). The overarching aim of this program is to develop novel analytical and computational tools and methods for the detection of environmental chemicals causing aberrations in estrogen ...
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TECHNIQUES FOR INJECTING CHEMICALS INTO TREES
Arboricultural Journal, 1985Summary Many existing techniques for applying solutions to woody plants are inexact, or require expensive apparatus and specialised training to use. Simple, cheap, and accurate methods are described for injecting volumes from 1 μ1 to 100 ml into main stems or branches of 5 mm diameter upwards.
J McP Dick, K A Longman
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Chemical Trees with Maximal VDB Topological Indices
match Communications in Mathematical and in Computer Chemistry, 2023Summary: A general vertex-degree-based (VDB) topological index of a graph \(G\) is defined as \[ \mathcal{T}_f=\mathcal{T}_f(G)=\sum_{uv\in E(G)}f(d_G(u),d_G(v)), \] where \(f(x,y)>0\) is a symmetric real function with \(x\ge 1\) and \(y\ge 1\).
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On structural properties of ABC-minimal chemical trees
Applied Mathematics and Computation, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaoxia Wu, Lianzhu Zhang
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On Randić indices of chemical trees and chemical unicyclic graphs [PDF]
MATCH : communications in mathematical and in computer chemistry, 2009 The fourth maximum Randić indices for the n-vertex chemical trees for n /10 and n-vertex chemical unicyclic graphs for n / 7 are determined, respectively.
Du, Zhibin, Zhou, Bo, Trinajstic, Nenad
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A Linear Algorithm for the Hyper-Wiener Index of Chemical Trees
Journal of Chemical Information and Computer Sciences, 2001An algorithm with a complexity linear in the number of vertices is proposed for the computation of the Hyper-Wiener index of chemical trees. This complexity is the best possible. Computational experience for alkanes is reported.
Roberto Aringhieri +2 more
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Journal of Economic Entomology, 2001
Some recent high-load, low-density pheromone-release devices emit an ethanolic blend of pheromone directly onto crop foliage to control insect pests by mating disruption. This study characterized the phytotoxicity associated with deposition of some pheromonal compounds in concentrated drops on the foliage of trees bearing aerosol release devices.
P Y, Giroux, J R, Miller
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Some recent high-load, low-density pheromone-release devices emit an ethanolic blend of pheromone directly onto crop foliage to control insect pests by mating disruption. This study characterized the phytotoxicity associated with deposition of some pheromonal compounds in concentrated drops on the foliage of trees bearing aerosol release devices.
P Y, Giroux, J R, Miller
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The σ-Irregularity of Chemical Trees
Match - Communications in Mathematical and in Computer Chemistry, 2023Žana Kovijanić Vukićević +4 more
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Chemical Interactions between Cloud Droplets and Trees
1988The chemical composition of both liquid droplet and leaf surface determines the behaviour of a cloud droplet on interception by vegetation. In some circumstances, particularly in wind-driven cloud, droplets may not adhere to foliage. Once on the leaf surface, the contact angle between the droplet and surface will determine the amount of water held by ...
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