Results 41 to 50 of about 393,404 (281)

A network-based approach to classify the three domains of life

open access: yesBiology Direct, 2011
Background Identifying group-specific characteristics in metabolic networks can provide better insight into evolutionary developments. Here, we present an approach to classify the three domains of life using topological information about the underlying ...
Mueller Laurin AJ   +4 more
doaj   +1 more source

The Topological Aspects of Phthalocyanines and Porphyrins Dendrimers

open access: yesIEEE Access, 2020
Topological descriptors are the numerical quantities of a graph that characterize various structural properties of it. In environmental sciences, pharmacy and in mathematical chemistry such descriptors are used for the quantitative structure-activity and
Wei Gao   +4 more
doaj   +1 more source

On topological descriptors for graph products

open access: yesAdvances in Neural Information Processing Systems 38
26 pages, 4 tables, 5 figures. Accepted at NeurIPS 2025.
Mattie Ji   +2 more
openaire   +2 more sources

Novel topological descriptors for analyzing biological networks [PDF]

open access: yesBMC Structural Biology, 2010
Topological descriptors, other graph measures, and in a broader sense, graph-theoretical methods, have been proven as powerful tools to perform biological network analysis. However, the majority of the developed descriptors and graph-theoretical methods does not have the ability to take vertex- and edge-labels into account, e.g., atom- and bond-types ...
Dehmer, Matthias M   +3 more
openaire   +2 more sources

Two QSAR models for predicting the toxicity of chemicals towards Tetrahymena pyriformis based on topological-norm descriptors and spatial-norm descriptors

open access: yes, 2023
Quantitative structure-activity relationship (QSAR) is important for safe, rapid and effective risk assessment of chemicals. In this study, two QSAR models were established with 1230 chemicals to predict toxicity towards Tetrahymena pyriformis using ...
Q. Jia (4606012)   +4 more
core   +1 more source

TOPOLOGICAL DESCRIPTORS OF H-NAPHTALENIC NANOTUBES [PDF]

open access: yes, 2020
Topological descriptors are the numerical indices based on the topology of the atoms and their bonds (chemical conformation, quartenary structure). In this paper, counting topological descriptor called "szeged index", of H-naphtalenic nanotubes
Amir Bahrami, Javad Yazdani
core  

On Distance-Based Topological Descriptors of Chemical Interconnection Networks

open access: yes, 2021
Structure-based topological descriptors of chemical networks enable us the prediction of physico-chemical properties and the bioactivities of compounds through QSAR/QSPR methods.
Chengmei Fan   +5 more
core   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Molecular van der Waals Space and Topological Indices from the Distance Matrix

open access: yesMolecules, 2004
A comparative study of 36 molecular descriptors derived from the topologicaldistance matrix and van der Waals space is carried out within this paper.
Seiman Corina   +6 more
doaj   +1 more source

Topological Descriptors for Parkinson’s Disease Classification and Regression Analysis [PDF]

open access: yes2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 2020
Accepted in the 42nd Annual International Conferences of the IEEE Engineering in Medicine and Biology Society (EMBC 2020)
Afra Nawar   +4 more
openaire   +4 more sources

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