Results 91 to 100 of about 23,816 (337)

Exploring QSPR in breast cancer drugs via entire neighborhood indices and regression models

open access: yesScientific Reports
Cancer is a life-threatening disease that can attack humans at any part of the body as a consequence of abnormal cell growth and proliferation, leading to tumors that can be fatal.
Alaa Altassan   +4 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Linking Device Performance to Nanoscale Photoactivation of Grain Boundaries in 2D Hybrid Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
The opto‐electronic response of polycrystalline (PEA)2PbBr4 thin films is investigated by correlating macroscopic photodetector performance with nanoscale mapping techniques. Grain boundary density is systematically tuned through crystallization control and linked to device responsivity.
Camilla Bordoni   +10 more
wiley   +1 more source

Electroacupuncture Improves the Learning and Memory by Modulating Hippocampal Glucose Metabolism through IGF1/IGF1R Signaling in Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
Electroacupuncture (EA) ameliorates learning and memory function in 5×FAD mice by regulating the brain glucose metabolic network. This neuroprotective effect is closely related to enhancing neuronal energy utilization via the IGF1/IGF1R signaling pathway.
Shengxiang Liang   +12 more
wiley   +1 more source

Topological indices of Kragujevac trees

open access: yes, 2014
We find the extremal values of the energy, the Wiener index and several vertex-degree-based topological indices over the set of Kragujevac trees with the central vertex of fixed ...
Cruz-Rodes R., Rada, Juan, Gutman, Ivan
core   +3 more sources

On some topological indices of zero divisor graphs of direct product of three finite fields

open access: yesExamples and Counterexamples
In this paper, we determine some degree-based topological indices, such as the Sombor index, the first and second Zagreb indices, the forgotten topological index, the Narumi–Katayama index, the first and second multiplicative Zagreb indices, the atom ...
Subhash Mallinath Gaded   +1 more
doaj   +1 more source

Inequalities between degree- and distance-based graph invariants

open access: yesJournal of Inequalities and Applications, 2018
Inequalities provide a way to study topological indices relatively. There are two major classes of topological indices: degree-based and distance-based indices.
Imran Nadeem, Hani Shaker
doaj   +1 more source

Reverse Zagreb and Reverse Hyper-Zagreb Indices for Crystallographic Structure of Molecules

open access: yesJournal of Chemistry, 2020
In the fields of chemical graph theory, topological index is a type of a molecular descriptor that is calculated based on the graph of a chemical compound.
Zhen Wang   +3 more
doaj   +1 more source

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