Results 251 to 260 of about 231,101 (299)

Subfecundity, Infertility Treatment, and Child Neurodevelopment.

JAMA Netw Open
Kahn LG, Hipwell AE, Stanford JB, Galai N, Zhao H, Alshawabkeh AN, Aschner JL, Barrett ES, Bertolla RP, Cajachagua Torres KN, Camargo CA, Cordero JF, Croen LA, Deoni SC, Gogcu S, Herbstman JB, Karagas MR, LeWinn KZ, Lyall K, McEvoy CT, McKay K, O'Connor TG, Pilsner JR, Schantz SL, Schmidt RJ, Smith AK, Wilkening GN, Zhang E, Zhu Y, Ghassabian A, ECHO Cohort Consortium.   +30 more
europepmc   +1 more source

Signal Quality of Reflective-Mode Photoplethysmograms Across Anatomical Sites. [PDF]

Sensors (Basel)
Ricci F, Vivarelli C, Mattei E, Calcagnini G.   +3 more
europepmc   +1 more source

The PI index of phenylenes

Journal of Mathematical Chemistry, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Deng, H, Chen, S, Zhang, J
openaire   +3 more sources

Bounds for the co-PI index of a graph

, 2015
In this paper, we present some inequalities for the Co-PI index involving the some topological indices, the number of vertices and edges, and the maximum degree. After that, we give a result for trees. In addition, we give some inequalities for the largest eigenvalue of the Co-PI matrix of G.
Kaya, E., Maden, A. D.
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PI index of bicyclic graphs

2023
Summary: The PI index of a graph \(G\) is given by \(\operatorname{PI}(G)=\sum_{e\in E(G)} (|V(G)|-N_G(e))\), where \(N_G(e)\) is the number of equidistant vertices for the edge \(e\). Various topological indices of bicyclic graphs have already been calculated. In this paper, we obtained the exact value of the PI index of bicyclic graphs.
SC, Manju, K, Somasundaram
openaire   +2 more sources

The weighted vertex PI index of tricyclic graphs

Discrete Applied Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gang Ma 0005, Qiuju Bian, Jianfeng Wang 0002   +2 more
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The PI Index of Polyomino Chains of 4k-Cycles

Acta Applicandae Mathematicae, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mansour, Toufik, Schork, Matthias
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Weighted PI index of corona product of graphs

Discrete Mathematics, Algorithms and Applications, 2014
In this paper, we present exact formula for the weighted PI index of corona product of two connected graphs in terms of other graph invariants including the PI index, first Zagreb index and second Zagreb index. Then, we apply our result to compute the weighted PI indices of t-fold bristled graph, bottleneck graph, sunlet graph, star graph, fan graph ...
Kannan Pattabiraman, P. Kandan
openaire   +2 more sources