HOME TheInfoList.com
Providing Lists of Related Topics to Help You Find Great Stuff
[::MainTopicLength::#1500] [::ListTopicLength::#1000] [::ListLength::#15] [::ListAdRepeat::#3]

PubChem
PUBCHEM is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine , which is part of the United States National Institutes of Health (NIH). PubChem can be accessed for free through a web user interface . Millions of compound structures and descriptive datasets can be freely downloaded via FTP . PubChem contains substance descriptions and small molecules with fewer than 1000 atoms and 1000 bonds. More than 80 database vendors contribute to the growing PubChem database. CONTENTS * 1 Databases * 2 Searching * 3 History * 4 ACS\'s concerns * 5 Database fields * 6 See also * 7 References * 8 External links DATABASES PubChem consists of three dynamically growing primary databases
[...More...]

"PubChem" on:
Wikipedia
Google
Yahoo

picture info

Chemical Element
A CHEMICAL ELEMENT or ELEMENT is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number , or Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth
Earth
with the remaining 24 being synthetic elements . There are 80 elements that have at least one stable isotope and 38 that have exclusively radioactive isotopes , which decay over time into other elements. Iron
Iron
is the most abundant element (by mass ) making up Earth, while oxygen is the most common element in the Earth\'s crust . Chemical elements constitute all of the ordinary matter of the universe. However astronomical observations suggest that ordinary observable matter makes up only about 15% of the matter in the universe: the remainder is dark matter ; the composition of this is unknown, but it is not composed of chemical elements
[...More...]

"Chemical Element" on:
Wikipedia
Google
Yahoo

picture info

Isotope
ISOTOPES are variants of a particular chemical element which differ in neutron number . All isotopes of a given element have the same number of protons in each atom . The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table . The number of protons within the atom\'s nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons . The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number , and each isotope of a given element has a different mass number
[...More...]

"Isotope" on:
Wikipedia
Google
Yahoo

picture info

Formal Charge
In chemistry , a FORMAL CHARGE (FC) is the charge assigned to an atom in a molecule , assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity . When determining the best Lewis structure
Lewis structure
(or predominant resonance structure ) for a molecule, the structure is chosen such that the formal charge on each of the atoms is as close to zero as possible. The formal charge of any atom in a molecule can be calculated by the following equation: F C = V N B 2 {displaystyle FC=V-N-{frac {B}{2}} } where V is the number of valence electrons of the neutral atom in isolation (in its ground state); N is the number of non-bonding valence electrons on this atom in the molecule; and B is the total number of electrons shared in bonds with other atoms in the molecule
[...More...]

"Formal Charge" on:
Wikipedia
Google
Yahoo

picture info

Chirality (chemistry)
CHIRALITY /kaɪˈrælɪti/ is a geometric property of some molecules and ions. A chiral molecule/ion is non-superposable on its mirror image . The presence of an asymmetric carbon center is one of several structural features that induce chirality in organic and inorganic molecules. The term chirality is derived from the Greek word for hand, χειρ (kheir). The mirror images of a chiral molecule/ion are called enantiomers or OPTICAL ISOMERS . Individual enantiomers are often designated as either "right- " or "left-handed". Chirality is an essential consideration when discussing the stereochemistry in organic and inorganic chemistry . The concept is of great practical importance because most biomolecules and pharmaceuticals are chiral
[...More...]

"Chirality (chemistry)" on:
Wikipedia
Google
Yahoo

IUPAC Name
In chemical nomenclature , a PREFERRED IUPAC
IUPAC
NAME (PIN) is a unique name, assigned to a chemical substance and preferred among the possible names generated by IUPAC
IUPAC
nomenclature. The "preferred IUPAC nomenclature" provides a set of rules for choosing between multiple possibilities in situations where it is important to decide on a unique name. It is intended for use in legal and regulatory situations. Currently, preferred IUPAC
IUPAC
names are written only for part of the organic compounds (see below ). Rules for the remaining organic and inorganic compounds are still under development. The "Preferred names in the nomenclature of organic compounds" (Draft 7 October 2004) replace two former publications: the "Nomenclature of Organic Chemistry", 1979 (the Blue Book) and "A Guide to IUPAC
IUPAC
Nomenclature of Organic Compounds, Recommendations 1993"
[...More...]

"IUPAC Name" on:
Wikipedia
Google
Yahoo

Medical Subject Heading
MEDICAL SUBJECT HEADINGS (MESH) is a comprehensive controlled vocabulary for the purpose of indexing journal articles and books in the life sciences; it serves as a thesaurus that facilitates searching. Created and updated by the United States National Library of Medicine (NLM), it is used by the MEDLINE / PubMed
PubMed
article database and by NLM's catalog of book holdings. MeSH is also used by ClinicalTrials.gov
ClinicalTrials.gov
registry to classify which diseases are studied by trials registered in ClinicalTrials.gov. MeSH was introduced in 1960, with the NLM's own index catalogue and the subject headings of the Quarterly Cumulative Index Medicus (1940 edition) as precursors. The yearly printed version of MeSH was discontinued in 2007 and MeSH is now available online only. It can be browsed and downloaded free of charge through PubMed
PubMed

[...More...]

"Medical Subject Heading" on:
Wikipedia
Google
Yahoo

Logical Operator
In logic , a LOGICAL CONNECTIVE (also called a LOGICAL OPERATOR) is a symbol or word used to connect two or more sentences (of either a formal or a natural language ) in a grammatically valid way, such that the value of the compound sentence produced depends only on that of the original sentences and on the meaning of the connective. The most common logical connectives are BINARY CONNECTIVES (also called DYADIC CONNECTIVES) which join two sentences which can be thought of as the function's operands . Also commonly, negation is considered to be a UNARY CONNECTIVE. Logical connectives along with quantifiers are the two main types of logical constants used in formal systems such as propositional logic and predicate logic . Semantics of a logical connective is often, but not always, presented as a truth function . A logical connective is similar to but not equivalent to a conditional operator
[...More...]

"Logical Operator" on:
Wikipedia
Google
Yahoo

picture info

Organism
In biology , an ORGANISM (from Greek : οργανισμός, organismos) is any individual life form , of an animal , plant , fungus , or single-celled microorganism such as a protist , bacterium , and archaeon . All types of organisms are capable of reproduction , growth and development , maintenance , and some degree of response to stimuli . An organism consists of one or more cells ; when it has one cell it is known as a unicellular organism ; and when it has more than one it is known as a multicellular organism . Humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs . An organism may be either a prokaryote or a eukaryote
[...More...]

"Organism" on:
Wikipedia
Google
Yahoo

picture info

Congress Of The United States
535 voting members * 100 senators * 435 representatives 6 non-voting members SENATE POLITICAL GROUPS * Republican (52) * Democratic (46)* Independent (2) (caucusing with Democrats) HOUSE OF REPRESENTATIVES POLITICAL GROUPS * Republican (240) * Democratic (194) * Vacant (1) ELECTIONS SENATE LAST ELECTION November 8, 2016 HOUSE OF REPRESENTATIVES LAST ELECTION November 8, 2016 MEETING PLACE United States Capitol
United States Capitol

[...More...]

"Congress Of The United States" on:
Wikipedia
Google
Yahoo

picture info

Tautomer
TAUTOMERS are constitutional isomers of organic compounds that readily interconvert. This reaction commonly results in the relocation of a proton . Although it is a complicated concept, tautomerism is relevant to the behavior of amino acids and nucleic acids, two of the fundamental building blocks of life. The concept of tautomerizations is called TAUTOMERISM. The chemical reaction interconverting the two is called TAUTOMERIZATION. CONTENTS * 1 Examples * 2 Prototropy * 3 Valence tautomerism * 4 See also * 5 References EXAMPLES Some examples of tautomers Keto-enol tautomerization typically strongly favors the keto tautomer, but an important exception is the case of 1,3-diketones such as acetylacetone . Tautomerization is pervasive in organic chemistry . It is typically associated with polar molecules and ions containing functional groups that are at least weakly acidic
[...More...]

"Tautomer" on:
Wikipedia
Google
Yahoo

Comparative Toxicogenomics Database
The COMPARATIVE TOXICOGENOMICS DATABASE (CTD) is a public website and research tool launched in November 2004 that curates scientific data describing relationships between chemicals/drugs, genes/proteins, diseases, taxa, phenotypes, GO annotations, pathways, and interaction modules. The database is maintained by the Department of Biological Sciences at North Carolina State University
North Carolina State University
. CONTENTS * 1 Background * 2 Goals and objectives * 3 Core data * 4 Data integration * 5 References * 6 External links BACKGROUNDThe Comparative Toxicogenomics Database (CTD) is a public website and research tool that curates scientific data describing relationships between chemicals, genes/proteins, diseases, taxa, phenotypes, GO annotations, pathways, and interaction modules, launched on November 12, 2004. The database is maintained by the Department of Biological Sciences at North Carolina State University
[...More...]

"Comparative Toxicogenomics Database" on:
Wikipedia
Google
Yahoo

picture info

Science (journal)
SCIENCE, also widely referred to as SCIENCE MAGAZINE, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a print subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is 570,400 people. The major focus of the journal is publishing important original scientific research and research reviews, but Science also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, Science and its rival Nature cover the full range of scientific disciplines
[...More...]

"Science (journal)" on:
Wikipedia
Google
Yahoo

picture info

Digital Object Identifier
In computing, a DIGITAL OBJECT IDENTIFIER or DOI is a persistent identifier or handle used to uniquely identify objects, standardized by the International Organization for Standardization
International Organization for Standardization
( ISO
ISO
). An implementation of the Handle System , DOIs are in wide use mainly to identify academic, professional, and government information, such as journal articles, research reports and data sets, and official publications though they also have been used to identify other types of information resources, such as commercial videos. A DOI aims to be "resolvable", usually to some form of access to the information object to which the DOI refers. This is achieved by binding the DOI to metadata about the object, such as a URL , indicating where the object can be found
[...More...]

"Digital Object Identifier" on:
Wikipedia
Google
Yahoo

Journal Of Chemical Information And Modeling
The JOURNAL OF CHEMICAL INFORMATION AND MODELING is a peer-reviewed scientific journal published by the American Chemical Society
American Chemical Society
. It was established in 1961 as the Journal of Chemical Documentation, renamed in 1975 to Journal of Chemical Information and Computer Sciences, and obtained its current name in 2005. The journal covers the fields of chemical informatics and molecular modeling . The editor-in-chief is Kenneth M. Merz Jr. ( Michigan State University
Michigan State University
). ABSTRACTING AND INDEXINGThe journal is abstracted and indexed in: * Chemical Abstracts Service * Scopus * ProQuest
ProQuest
databases * Science Citation Index * Current Contents /Physical, Chemical ">( Microsoft Excel
Microsoft Excel
) on 2013-12-02. Retrieved 2014-09-18. * ^ A B "Master Journal List"
[...More...]

"Journal Of Chemical Information And Modeling" on:
Wikipedia
Google
Yahoo

picture info

Wikidata
WIKIDATA is a collaboratively edited knowledge base operated by the Wikimedia Foundation . It is intended to provide a common source of data which can be used by Wikimedia projects such as , and by anyone else, under a public domain licence. This is similar to the way Wikimedia Commons
Wikimedia Commons
provides storage for media files and access to those files for all Wikimedia projects, and which are also freely available for reuse. Wikidata
Wikidata
is powered by the software Wikibase . CONTENTS * 1 Concepts * 2 Development history * 2.1 Phase 1 * 2.2 Phase 2 * 2.3 Phase 3 * 3 Reception * 4 Logo * 5 See also * 6 References * 7 Further reading * 8 External links CONCEPTS Screenshots Three statements from Wikidata\'s item on the planet Mars. Values include links to other items and to Wikimedia Commons
Wikimedia Commons

[...More...]

"Wikidata" on:
Wikipedia
Google
Yahoo
.