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Topological index in chemical graph theory
The atom-bond connectivity index (ABC index) is a topological index in chemical graph theory that combines information from both vertices (atoms) and edges
Atom-bond_connectivity_index
Wiener index Hosoya index Hyper-Wiener index Estrada index Randić index Zagreb indices Szeged index Padmakar–Ivan index Atom-bond connectivity index Harmonic
Topological_index
Graph operation in graph theory
M_{2}(D[G])=16M_{2}(G)} Randić index: R ( D [ G ] ) = 2 R ( G ) {\displaystyle R(D[G])=2R(G)} Atom-bond connectivity index: A B C ( D [ G ] ) = 2 2 ∑ e
Double_graph
Tree graph with exactly one vertex of degree >2
determine the specific index. Examples include the Randić index, first Zagreb index, harmonic index, and atom-bond connectivity index. For a starlike tree
Starlike_tree
Notation for chemical compounds
bonds between the atoms, either as explicit lines between the element symbols, or as implied bonds in a notation that makes the bonding pattern clear. Full
Chemical_formula
Chemical species structure notation
tetrahedral centers and double bond geometry. These are structural features that cannot be specified by connectivity alone, and therefore the SMILES
Simplified Molecular Input Line Entry System
Simplified_Molecular_Input_Line_Entry_System
species, in which all of the atoms comprising the reactants are retained in the single product. Changes in connectivity may occur, but there is no loss
Glossary_of_chemistry_terms
Isomers of chemical compounds that interconvert
proteins. This shifts the proton more than two atoms away, producing a zwitterion rather than shifting a double bond: H2N−CH2−COOH ⇌ H3N+−CH2−CO−2 phosphite
Tautomer
Subdiscipline of chemistry, focusing on carbon compounds
that tetravalent carbon atoms could link to each other to form a carbon lattice, and that the detailed patterns of atomic bonding could be discerned by
Organic_chemistry
Chemical compound
Each silicon atom is fourfold-coordinated: 3 in-plane Si−Si bonds to neighbouring silicons and 1 out-of-plane Si−H or Si−OH bond. The Si sublattice
Siloxene
criterion) but, because they have different spatial and connectivity relations to H-3 (with 3-bond vs. 5-bond coupling constants of different strengths), they
Magnetic_inequivalence
Software for visualizing chemical structures
node of the tree is an atom set with substructures if any are provided by the spectral data. By extending the molecule with a bond, an intermediate structure
Chemical_graph_generator
Class of main-group heterocycle
between adjacent atoms gives the boron-nitrogen bond π character and could be depicted as a double bond. A boron-nitrogen double bond would be formally
Azaborine
Oxide of silicon
are two oxygen atoms bridging between the silicon atoms with an Si–O–Si angle of 94° and bond length of 164.6 pm and the terminal Si–O bond length is 150
Silicon_dioxide
Standardized naming conventions for polymers
acyclic subunit of 4 carbon atoms with 4 free valences, one at each atom, as shown. It is oriented so that the lower left atom has the lowest number. The
IUPAC_polymer_nomenclature
Woman who takes the dominant role in BDSM activities
by letter or telephone, or in the contemporary era of technological connectivity by email, online chat or platforms such as OnlyFans. Most, but not all
Dominatrix
Mineral
four oxygen (O) atoms. The average length of the bonds is 1.61 Å which indicates that the Cr cation is hexavalent. The average bond length at the Cr
George-ericksenite
Biomolecule consisting of chains of amino acid residues
and oxygen atoms are known as the main chain or protein backbone. The peptide bond has two resonance forms that confer some double-bond character to
Protein
Chemical compound
noticeable Lewis acidity at both boron atoms, even though the B≡B unit is often drawn as a linear triple bond. A Lewis acid is a species that accepts
Diboryne
Energy-carrying molecule in living cells
attached by the #9-nitrogen atom to the 1′ carbon atom of a sugar (ribose), which in turn is attached at the 5' carbon atom of the sugar to a triphosphate
Adenosine_triphosphate
American manufacturing company
Microanalysis, Low-energy electron induced X-ray emission spectrometry, and atom Probe tomography. Rauland Healthcare (hospitals) and Education (schools)
Ametek
Class of drugs used to treat malignant tumors
electron-withdrawing group, reduces the electron cloud density on the nitrogen atom in nitrogen mustards. Based on this principle, H. Arnold synthesized cyclophosphamide
Antineoplastic
other bonds including hybrid forms. Bond angles can be deduced from the bond vectors in groups of atoms or ions. Bond distances and angles can be made available
Crystallographic_database
American ethnobotanist, lecturer, and writer (1946–2000)
We know a tremendous amount about what is going on in the heart of the atom, but we know absolutely nothing about the nature of the mind. During the
Terence_McKenna
Intel microprocessor
processing unit. Intel's low-powered Bonnell microarchitecture employed in early Atom processor cores also uses an in-order dual pipeline similar to P5. Intel
Pentium_(original)
Mass spectrometry software
structure identification refers to the identity and connectivity (with bond multiplicities) of the atoms, but not stereochemistry information. Elucidation
SIRIUS_(software)
Study of chemical processes of living organisms
atoms in the ring, as not all carbons are necessarily included in the ring backbone. Two monosaccharides can be joined by a glycosidic or ester bond into
Biochemistry
Toxin from snake venom
coordinate the zinc atom, while the fourth ligand is either a water molecule or hydroxide ion, which acts as the nucleophile in peptide bond hydrolysis. The
Acutolysin_A
Vacuum tube used to display images
showing that they consisted of negatively charged particles smaller than atoms, the first subatomic particles, which had already been named electrons by
Cathode_ray_tube
Method for satisfying the Newtonian motion of a rigid body which consists of mass points
performed using internal coordinates that automatically satisfy the bond-length, bond-angle and torsion-angle constraints, simulations may also be performed
Constraint (computational chemistry)
Constraint_(computational_chemistry)
Awareness of internal and external existence
the brainstem was suggested to drive consciousness through functional connectivity with two cortical regions, the left ventral anterior insular cortex,
Consciousness
Molecule produced by a living organism
glycogen. They are generally large and often have a complex branched connectivity. Because of their size, polysaccharides are not water-soluble, but their
Biomolecule
Reversible transition in amorphous materials
the buildup of a charge distribution between all pairs of atoms just like a chemical bond (e.g., silicon, when a band is just filled with electrons)
Glass_transition
Organic compounds containing amine and carboxylic groups
amino acid, as well as a hydrogen atom. With the exception of glycine, for which the side chain is also a hydrogen atom, the α–carbon is stereogenic. All
Amino_acid
Country in South Asia
Institute for Strategic Studies (2006). "Bhutto was father of Pakistan's Atom Bomb Program". International Institute for Strategic Studies. Archived from
Pakistan
American multinational technology company
to quantum software and quantum hardware including trapped ion, neutral atom, and superconducting systems. In April 2021, Microsoft announced it would
Microsoft
Chemical element with atomic number 80 (Hg)
coordination number, with each Hg atom having around 6 to 10 nearest neighbours, in contrast to simple metallic liquids in which atoms are densely-packed with 12
Mercury_(element)
Series of British microcomputers by Acorn
computer literacy. Renowned for its strong build quality and extensive connectivity, including ports for peripherals, support for Econet networking, and
BBC_Micro
Peptide hormone
form symmetrical molecule. An important feature is the presence of zinc atoms (Zn2+) on the axis of symmetry, which are surrounded by three water molecules
Insulin
Ordered array of colloidal particles
can be thought of as an atom, and the NAs as an electron cloud, and tuning the NAs helps tune the electrostatics and bonding, helping form a wide range
Colloidal_crystal
Natural processes of carbon exchange
hotspots, where it is then released as CO2. This occurs so that the carbon atom matches the oxidation state of the basalts erupting in such areas. Although
Carbon_cycle
Secular meditation practice
function more than structure, with consistent enhancement of activity and connectivity in networks that support emotion regulation, self-referential processing
Mindfulness
Primary male sex hormone
P450 oxidase with the loss of six carbon atoms to give pregnenolone. In the next step, two additional carbon atoms are removed by the CYP17A1 (17α-hydroxylase/17
Testosterone
Scientific researches on pesticides
screening. Other tools like three-dimensional (3D) shape, atom-type similarity, or 2D extended connectivity fingerprints also retrieve molecules of interest out
Pesticide_research
Professor at the University of Manchester
"Structure-activity relationships derived by machine learning: The use of atoms and their bond connectivities to predict mutagenicity by inductive logic programming".
Ross_D._King
Region of England
Downs Dairy) at Wincanton. Ariel Motor Company in Crewkerne, make the Ariel Atom. Refresco Gerber in the north of Bridgwater, between the A38 and the River
South_West_England
Medication and naturally occurring steroid hormone
density (BMD), or anthropomorphic measures like body weight or body mass index. Conversely, it was associated with a significant incidence of androgenic
Testosterone_(medication)
Arthropoda. ion An atom or molecule with a net electric charge due to the loss or gain of one or more electrons. ionic bond A type of chemical bond involving the
Glossary_of_biology
Set of chemical reactions in organisms
tibtech.2004.07.007. PMID 15331224. Ma HW, Zeng AP (July 2003). "The connectivity structure, giant strong component and centrality of metabolic networks"
Metabolism
Monastery in Tabo, Himachal Pradesh, India
reprint: S. Chand, New Delhi. Pandey, Abhimanyu. (2026). "State Capacities, Connectivity and Cross-border Relations: Analysing Different Responses to Adverse
Tabo_Monastery
Astrophysicist, researcher (born 1949)
principles. Applying these ideas, he built a low power system, GrayWulf, using Atom processors with extremely good IO performance per unit power (factor of 15
Alex_Szalay
Medical condition of lack of oxygen in the tissues
detected or appreciated. Hemoglobin function can also be impaired when the iron atom in its heme group is oxidized from the ferrous (Fe²⁺) to the ferric (Fe³⁺)
Hypoxia_(medicine)
of a single, central phosphorus atom covalently bonded to four oxygen atoms via three single bonds and one double bond. Phosphates are abundant and ubiquitous
Glossary of cellular and molecular biology (M–Z)
Glossary_of_cellular_and_molecular_biology_(M–Z)
2023. "Atom Computing is the first to announce a 1,000+ qubit quantum computer". arstechnica. 24 October 2023. Retrieved 25 October 2023. "Atom Computing
2023_in_science
formula as the original substrate but differs in the connectivity or spatial arrangement of its atoms. isomeric genes Two or more genes that are equivalent
Glossary of cellular and molecular biology (0–L)
Glossary_of_cellular_and_molecular_biology_(0–L)
October 2020. Wolos, Agnieszka; et al. (25 September 2020). "Synthetic connectivity, emergence, and self-regeneration in the network of prebiotic chemistry"
2020_in_science
et al. (2012-09-18). "Statistical connectivity provides a sufficient foundation for specific functional connectivity in neocortical neural microcircuits"
2012_in_science
Chemical compound
the estramustine and estromustine structures, containing a carbamate-ester bond, appear to be responsible for the cytostatic effects of EMP. In addition
Estramustine_phosphate
Overview of the events of 2020 in science
October 2020. Wolos, Agnieszka; et al. (25 September 2020). "Synthetic connectivity, emergence, and self-regeneration in the network of prebiotic chemistry"
July–September 2020 in science
July–September_2020_in_science
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ATOM BOND-CONNECTIVITY-INDEX
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ATOM BOND-CONNECTIVITY-INDEX
ATOM BOND-CONNECTIVITY-INDEX
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ATOM BOND-CONNECTIVITY-INDEX
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