Results 11 to 20 of about 38,527 (197)

Tetrel Bonding Interactions in Perchlorinated Cyclopenta- and Cyclohexatetrelanes: A Combined DFT and CSD Study

open access: yesMolecules, 2018
In this manuscript, we combined DFT calculations (PBE0-D3/def2-TZVP level of theory) and a Cambridge Structural Database (CSD) survey to evaluate the ability of perchlorinated cyclopenta- and cyclohexatetrelanes in establishing tetrel bonding ...
Antonio Bauzá, Antonio Frontera
doaj   +3 more sources

Chalcogen ‘like-like’ Interactions Involving Trisulphide and Triselenide Compounds: A Combined CSD and Ab Initio Study

open access: yesMolecules, 2018
In this manuscript, we combined a search in the Cambridge Structural Database (CSD) and ab initio calculations (RI-MP2/def2-TZVPD level of theory) to analyze the ability of trisulphide and triselenide moieties to establish chalcogen ‘like-like ...
Antonio Bauzá, Antonio Frontera
doaj   +3 more sources

An Efficient Representation for Filtrations of Simplicial Complexes [PDF]

open access: yes, 2017
A filtration over a simplicial complex $K$ is an ordering of the simplices of $K$ such that all prefixes in the ordering are subcomplexes of $K$. Filtrations are at the core of Persistent Homology, a major tool in Topological Data Analysis.
Boissonnat, Jean-Daniel, S., Karthik C.
core   +3 more sources

On the Importance of Halogen–Halogen Interactions in the Solid State of Fullerene Halides: A Combined Theoretical and Crystallographic Study

open access: yesCrystals, 2017
In this manuscript, we combined DFT (Density Functional Theory) calculations (BP86-D3/def2-TZVP level of theory) and a search in the CSD (Cambridge Structural Database) to analyze the role of halogen–halogen interactions in the crystal structure of ...
Antonio Bauzá, Antonio Frontera
doaj   +1 more source

Infrared Small Maritime Target Detection Based on Integrated Target Saliency Measure

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Robust and effective detection of a small target in an infrared maritime image is a key technology of maritime target search and tracking applications. Infrared small target detection is a challenging task due to the factors such as dim small targets and
Ping Yang, Lili Dong, Wenhai Xu
doaj   +1 more source

Automated design of low complexity FIR filters [PDF]

open access: yes, 1998
This paper considers the design of low complexity FIR filters. Complexity is reduced by constraining the filters to have integer coefficients, which can be efficiently implemented using primitive operator directed graphs (PODG).
Bull, DR, Redmill, DW
core   +2 more sources

Upregulation of IL-1 Receptor Antagonist in a Mouse Model of Migraine

open access: yesBrain Sciences, 2019
Migraine is a disorder characterized by attacks of monolateral headaches, often accompanied by nausea, vomiting, and photophobia. Around 30% of patients also report aura symptoms.
Salvo Danilo Lombardo   +8 more
doaj   +1 more source

Regium Bonds between Silver(I) Pyrazolates Dinuclear Complexes and Lewis Bases (N2, OH2, NCH, SH2, NH3, PH3, CO and CNH)

open access: yesCrystals, 2020
A theoretical study and Cambridge Structural Database (CSD) search of dinuclear Ag(I) pyrazolates interactions with Lewis bases were carried out and the effect of the substituents and ligands on the structure and on the aromaticity were analyzed.
Ibon Alkorta   +3 more
doaj   +1 more source

Structure determination from powder data : Mogul and CASTEP [PDF]

open access: yes, 2009
When solving the crystal structure of complex molecules from powder data, accurately locating the global minimum can be challenging, particularly where the number of internal degrees of freedom is large.
Bardin, J.   +5 more
core   +1 more source

Substituent Effects in Multivalent Halogen Bonding Complexes: A Combined Theoretical and Crystallographic Study

open access: yesMolecules, 2017
In this manuscript, we combined ab initio calculations (RI-MP2/def2-TZVPD level of theory) and a search in the CSD (Cambridge Structural Database) to analyze the influence of aromatic substitution in charge-assisted multivalent halogen bonding complexes.
Antonio Bauzá   +2 more
doaj   +1 more source

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