Results 31 to 40 of about 877,520 (249)

Wiener-Type Topological Indices [PDF]

, 1998
A unified approach to the Wiener topological index and its various recent modifications, is presented. Among these modifications particular attention is paid to the Kirchhoff, Harary, Szeged, Cluj and Schultz indices, as well as their numerous variants ...
Diudea, Mircea V., Gutman, Ivan
core   +1 more source

Topological and Hyper Topological Coindices of Benzenoid Circumcoronene Series

مجلة بغداد للعلوم
Numerous applications in chemistry are enabled by chemical graph theory, which is a branch of graph theory. Numerical quantities derived from the chemical graphs of a molecule, known as topological indices and co-indices, are used to model the chemical ...
Walid Yousef, Abdu Alameri, Mohammed Alsharafi, Noman Al-Naggar, Belal Al-Fuhaid   +4 more
doaj   +1 more source

Topological properties of Graphene using some novel neighborhood degree-based topological indices

International Journal of Mathematics for Industry, 2019
Topological indices are numeric quantities that transform chemical structure to real number. Topological indices are used in QSAR/QSPR studies to correlate the bioactivity and physiochemical properties of molecule.
Sourav Mondal, Nilanjan De, Anita Pal
doaj   +1 more source

Accurate and noninvasive prostate cancer detection using plasma‐derived extracellular vesicle RNA

FEBS Open Bio, EarlyView.
Plasma extracellular vesicles were captured with WGA‐conjugated magnetic beads and profiled for RNA biomarkers. A three‐RNA panel (NM_024955, NR_047469, and NR_002564) distinguished prostate cancer from healthy controls and benign prostatic hyperplasia, supporting a simple, noninvasive approach to improve prostate cancer detection.
Hanping Wei, Haoran Wu, Wei Feng
wiley   +1 more source

On Molecular Descriptors of Carbon Nanocones

Biomolecules, 2018
Many degree-based topological indices can be obtained from the closed-off M-polynomial of a carbon nanocone. These topological indices are numerical parameters that are associated with a structure and, in combination, determine the properties of the ...
Waqas Nazeer, Adeel Farooq, Muhammad Younas, Mobeen Munir, Shin Min Kang   +4 more
doaj   +1 more source

CSF Cytokine Network Organization Predicts Progression Independent of Relapse and MRI Activity in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Progression independent of relapse activity is a major determinant of long‐term disability in multiple sclerosis, but its immunopathologic basis remains incompletely understood. We investigated whether relapse‐independent progression in radiologically stable relapsing–remitting multiple sclerosis is associated with distinct ...
Antonio Bruno, Matteo Conti, Ettore Dolcetti, Federica Azzolini, Angela Borrelli, Roberta Fantozzi, Mario Stampanoni Bassi, Giovanni Galifi, Giuseppe Maccarrone, Luca Montaguti, Marco Cervigni, Maddalena Dal Pozzo, Roberto Furlan, Annamaria Finardi, Girolama Alessandra Marfia, Marco Salvetti, Antonella Conte, Fabio Buttari, Diego Centonze, Luana Gilio   +19 more
wiley   +1 more source

QSPR Analysis of Certain Degree Based Topological Indices [PDF]

, 2017
In QSAR/QSPR study, topological indices are utilized to guess the bioactivity of chemical compounds. In this paper, we study the QSPR analysis of ten degree-based topological indices. Our study reveals some important results which help us to characterize
Sunilkumar Hosamani, Hosamani, Sunilkumar, Gavade, Sharada, Shruti Jamagoud, Perigidad, Deepa, Yallavva Maled, Sharada Gavade, Maled, Yallavva, Jamagoud, Shruti, Deepa Perigidad   +9 more
core   +1 more source

A novel representation of RNA secondary structure based on element-contact graphs

BMC Bioinformatics, 2008
Background Depending on their specific structures, noncoding RNAs (ncRNAs) play important roles in many biological processes. Interest in developing new topological indices based on RNA graphs has been revived in recent years, as such indices can be used
Bo Xiaochen, Shu Wenjie, Zheng Zhiqiang, Wang Shengqi   +3 more
doaj   +1 more source

Dysregulated Cholesterol Metabolism, Chronic Inflammation, and Disability in Severe Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Dysregulated lipid metabolism, which can affect remyelination and neural repair, has not been extensively investigated in progressive multiple sclerosis (PMS). The goal was to examine whether dysregulated cholesterol metabolism was associated with disability in PMS. Methods The study sample comprised 53 Severe PMS patients (Expanded
Taylor R. Wicks, Mujeeb Shittu, Anna Wolska, Diala Ghazal, Bianca Weinstock‐Guttman, Alexander Burnham, Alan T. Remaley, Robert Zivadinov, Murali Ramanathan   +8 more
wiley   +1 more source

Drop‐on‐Demand Printed Negative Dielectric Anisotropy Liquid Crystal Droplets for Adaptive Complex Beam Manipulation and Assessment

Advanced Functional Materials, EarlyView.
Printed negative‐dielectric‐anisotropy liquid‐crystal droplets enable multidimensional full‐vectorial optical‐field sensing across polarization, phase, and wavelength, while also generating tunable skyrmionic‐like complex optical fields. ABSTRACT Adaptive manipulation of vectorial optical fields is important for optical metrology, imaging, and ...
Jinge Guo, Xuke Qiu, Runchen Zhang, Qihao Han, Liangyu Deng, Yishun Lu, Zimo Zhao, Mengmeng Li, Waqas Kamal, Junseok Ma, Yongge Ma, Steve J. Elston, Alfonso A. Castrejón‐Pita, Stephen M. Morris, Chao He   +14 more
wiley   +1 more source