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Topic: Chemical elements data references

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In the News (Wed 17 Apr 19)

  Chemical elements data references - Wikipedia, the free encyclopedia
Recommended values for many properties of the elements, together with various references, are collected on these data pages.
Any changes to the infobox data should be checked against these pages, and/or the available references should be expanded accordingly, so that the decision for or against certain values remains transparent and easily retraceable.
densities of the elements (data page) — density (solid, liquid, gas)
en.wikipedia.org /wiki/Chemical_elements_data_references   (330 words)

 MEDLINE, SDILINE and the Backfiles Data Elements and Other Information
An X in the box indicates that the data element is significantly represented in the database (this is either because the element is defined for all, or nearly all, years of publication found in that database, or because it is simply present on a very large percentage of records for years in use).
An * in the box indicates that the data element is present on less than 1% of the records in that database (this is primarily due to releveling).
The data element may be multiply- occurring with a new RO value added each time a record is maintained (except a new occurrence will NOT be added if the initials for the last RO occurrence are the same).
www.nlm.nih.gov /databases/license/medlars_elements2.html   (7036 words)

 EPA: Federal Register: Data Elements for Reporting Water Quality Results of Chemical and Microbiological Analytes
Because of the cost of its collection, water quality data must be viewed as a resource worthy of careful management both to preserve it for future analyses by the agency that collects it and to share it among local, state, and federal agencies, and the private sector involved in resource management activities.
A data element may be a data field in a database such as a laboratory name, and analyte, or the latitude of the sampling station.
The list of data elements is not specific to any particular database, but is intended to be used voluntarily by agencies, organizations and individuals to guide their reporting, storage, and sharing of water quality data.
www.epa.gov /fedrgstr/EPA-WATER/2001/March/Day-16/w6508.htm   (2163 words)

 Category:Chemical elements - Wikipedia, the free encyclopedia
The main article for this category is Chemical element.
A chemical element is a substance that cannot be divided or changed into different substances by ordinary chemical methods.
The smallest particle of such an element is an atom, which consists of electrons centered around a nucleus of protons and neutrons.
en.wikipedia.org /wiki/Category:Chemical_elements   (139 words)

 General Physical and Chemical Data Sources
There is a searchable elemental data index that provides collocation of various types of data for individual elements.
Data is not evaluated, but this is a convenient and accessible way to do a preliminary data search by name, formula, CAS Registry Number, or even by structure (requires a free plug-in).
This publication is 14-volume set containing critically evaluated data covering physical and thermodynamic properties of all classes of hydrocarbons and certain classes of sulfur derivatives of hydrocarbons present in petroleum and coal.
www.lib.uchicago.edu /e/su/chem/datageneral.html   (1320 words)

 NEA TDB The OECD NEA Thermochemical Database Project
Data on other elements present in radioactive waste (as fission or activation products) such as nickel, selenium, zirconium has also been critically evaluated, as well as data for compounds and complexes of the previously considered elements with selected organic ligands (oxalate, citrate, EDTA and isosaccharinic acid).
Data from other compilations, estimates etc. are in principle not considered, other than to the extent that they contain useful references to original data sources, which will then be the data evaluated.
The data selected in the reviews is made available in the TDB review reports, which are the principal output from the project.
www.nea.fr /html/dbtdb   (506 words)

 XML MeSH Data Elements
This element is not to be confused with the set or class of elements in a Descriptor which may also be referred to as the Descriptor Class of that record.
Concept> element, indicating whether or not the concept is the preferred concept of the record.
Description: Attribute of the element which indicates whether or not the term is the preferred term of the record.
www.nlm.nih.gov /mesh/xml_data_elements.html   (3217 words)

 Chemical Engineering   (Site not responding. Last check: 2007-10-11)
Chemical Engineers are employed around the globe in a world class, largely graduate, profession.
Chemical Engineers are found in a wide range of industries from chemicals and bio-chemicals to energy, food and drink, pharmaceuticals and health care.
Chemical Engineers have the multi-disciplinary skills that keep their options open and they are valued and well rewarded in many kinds of employment.
www.edasolutions.com /Groups/ChemicalEngineering.htm   (2097 words)

 Glossary of Hydrologic Terms
References for the definitions can be found at the end of the document.
Distribution coefficient - The quantity of the solute, chemical or radionuclide sorbed by the solid per unit weight of solid divided by the quantity dissolved in the water per unit volume of water (ANS, 1980).
A Radioisotope - An unstable isotope of an element that decays or disintegrates spontaneously, emitting radiation (NRC, 1981).
or.water.usgs.gov /projs_dir/willgw/glossary.html   (8806 words)

 Thermodynamic Information
Data are experimental, extrapolated, or estimated, from a variety of sources.
Although physical property data are published in many places, these are some of the journals that tend to publish articles focusing on experimental and calculated property data and thermodynamics.
Data published under the auspices of the International Union of Pure and Applied Chemistry are particularly valuable in the areas of solubility, electrochemistry, and thermodynamics.
www.lib.utexas.edu /chem/info/thermo.html   (3484 words)

 Science Timeline
The five regular polygons he ascribed to the four elements plus the "decoration" of the universe (Plato 1929:55c), probably the animals of the zodiac.
Thus grape juice is the infantile form of wine, fermentation is the process of maturation; the further change to vinegar is the death of the wine" (Fruton 1972:24).
Since all matter is formed from the mixture of the four elements, he taught the elements are not permanent and could be transmuted one into another, inspiring all who practice alchemy.
www.sciencetimeline.net /prehistory.htm   (6591 words)

 © The American Physiological Society - Publications - Preparing Your Manuscript
Data portions of submitted papers that have appeared on an author's personal web site will be permitted, with the proviso that the author inform the Editor at the time of the submission that such material exists so that the Editor can determine the suitability of such material for publication.
Separate files must be submitted for all discrete elements of the manuscript [e.g., separate files for each figure and table, a separate file for the complete text of the manuscript (including abstract, all main text, bibliography, figure legends and table legends, etc.)].
Lengthy tables of data, on the Editor's recommendation and with the approval of the author, will be deposited by the APS Publications (see Data Supplements).
www.the-aps.org /publications/i4a/prep_manuscript.htm   (8601 words)

 Encyclopedia :: encyclopedia : Chemical elements data references   (Site not responding. Last check: 2007-10-11)
Encyclopedia :: encyclopedia : Chemical elements data references
Heats of vaporization of the elements (data page)
Chemical equations describe chemical reactions (General Chemistry) (Books)
www.hallencyclopedia.com /Chemical_elements_data_references   (334 words)

 Physical and Chemical Data Sources for Elements, Inorganic and Organometallic Compounds
Data in the following categories may be reported: characterization, including material composition and structural data, chemical properties, including preparation and reaction details, condensed phase data, electric, magnetic, mechanical, molecular, and optical properties, electrochemistry, phase transition data, quantum chemical calculations, spectroscopy, systemic properties, such as solubility and vapor pressure in solution, thermodynamics, transport phenomena, thermal properties.
Data included from Materials Research Society: Journal of Materials Research, MRS Bulletin, and MRS Symposium Proceedings and the American Chemical Society: CA Selects: Oxide Superconductors.
This comprehensive compilation provides critically evaluated data for elements, inorganic and organometallic compounds in the context of scholarly monographs.
www.lib.uchicago.edu /e/su/chem/datainorganic.html   (418 words)

 BUBL LINK: Chemical data
Periodic table of the elements providing physical (electronic, thermal and steric) data, details of isotopes, and background information such as year of discovery, name origin and uses for each element.
Data table presenting the final results of a project to establish internationally agreed values for the thermodynamic properties of key chemical substances.
Offers information on the physical form of chemicals of which the major types are solid, liquid, gas and vapour, possible health effects of chemical substances, methods of data retrieval, details of hazard and risk assessment, and a glossary.
bubl.ac.uk /link/c/chemicaldata.htm   (753 words)

 NIST Scientific and Technical Databases - Online Scientific Databases
The wavelengths, intensities, and spectrum assignments are given for each element, and the data for the approximately 12,000 lines of all elements are also collected into a single table.
These isotopic data are useful to modelers who quantify the global or regional methane budgets by comparing the isotopic compositions of methane in ambient air with the isotopic compositions of the aggregate of flux-weighted sources.
Data for free radical processes involving primary radicals from water, inorganic radicals and carbon-centered radicals in solution, and singlet oxygen and organic peroxyl radicals in various solvents.
www.nist.gov /srd/online.htm   (3370 words)

 US COALQUAL Database Introduction
The data were used primarily by state Geological Surveys, university researchers, and other federal agencies.
Chemical data for the samples are presented in this database on an AS-RECEIVED, WHOLE-COAL basis.
All elemental data are reported in parts-per-million (ppm).
energy.er.usgs.gov /products/databases/CoalQual/intro.htm   (717 words)

 On-line Databases of Surface Science Information
Photoemisison cross-sections for a range of elements, Taken from the "X-ray Data Booklet" produced by Lawrence Berkeley National Laboratory.
Calculates band structure, total energy, density of states, equilibrium lattice constants, elastic constants, electron-phonon coupling constants and critera for the occurence of magnetism for most elements and a vairiety of hydrides carbides nitrides and oxides.
A Large repository of LEED I(V) data and plots for a wide variety of elements and compounds; includes original references.
www.uksaf.org /data.html   (809 words)

 Mystery Elements Use of the Periodic Table
earth's crust is made up of only 8 elements which are referred to as "the most abundant elements of the earth's crust." In this activity students will identify these 8 elements by using a set of given clues about the
I am one of the most reactive elements on the periodic table and I have four energy levels.
If computers are not available, library references and common classroom materials can be used to complete this lesson.
teachertech.rice.edu /Participants/louviere/Lessons/les2.html   (468 words)

 Nagra/PSI Chemical Thermodynamic Data Base 01/01
The data included for many elements are based on their reviews of the basic literature.
In addition, the data base includes additional data selected by the authors from recommendations of other experts in ground water geochemistry and of the international data base project of the Nuclear Energy Agency (NEA).
This encyclopedic report is indispensable for every scientist working in the field of environmental studies as the source of information on the quality of the thermodynamic data governing particular problems in environmental geochemistry, especially those concerned with the fate of hazardous substances.
www.universal-publishers.com /book.php?method=ISBN&book=1581126204   (294 words)

 US FDA/CFSAN Library of Chemistry Information
References: Chemical and Physical Properties Louisiana State University
Chemicals and Food Safety at Agriculture and Agri-Food Canada -->
NMR Solvent Reference Table ACD/Labs (table of NMR solvent chemical shifts for the various magnetic nuclei)
www.cfsan.fda.gov /~dms/chemist.html   (975 words)

 Elemental Radii
data given as [nnn] indicate the mass number of the longest lived isotope
A bonded connection is established if the distance (d) between two elements A and B is in the range from Rcov(A) + Rcov(B) - t to Rcov(A) + Rcov(B) + t, where the tolerance (t) is usually set to 0.4Å.
Elements not yet encountered in the CSD have Rcov = 1.50 Å
www.ccdc.cam.ac.uk /products/csd/radii   (263 words)

 [No title]
A new test set, referred to as the G2/97,
Data for this test set are given in the web page.
The G3 total energies, components of the energies, higher level corrections, and zero-point energies are given in the link below.
chemistry.anl.gov /compmat/g3theory.htm   (528 words)

 American Wildcelery Restoration   (Site not responding. Last check: 2007-10-11)
Beal, E. A manual of marsh and aquatic vascular plants of North Carolina with habitat data.
Moyle, J. Some chemical factors influencing the distribution of aquatic plants in Minnesota.
Notes on the chemical composition of some of the larger aquatic plants of Lake Mendota.
www.npwrc.usgs.gov /resource/literatr/wildcel/referenc.htm   (1807 words)

 Flame Tests
The spectra are calculated to represent the emission from a flame and are based on the work of John Talbot.
Additional data for each element were obtained from the National Institute of Standards and Technology.
The element Indium is named for the prominent blue lines in its spectrum.
webmineral.com /help/FlameTest.shtml   (427 words)

 Ed Rogers Rare & Out of Print Books - Rare Paleontology Books   (Site not responding. Last check: 2007-10-11)
This experimental data was later used by Foucault as proof of the rotation of the earth.
Definitions of each are provided and more importantly references are cited and in many cases statements from other works are used in comparison to provide the reader with conflicting view points thus making the work an invaluable reference on knowledge up to the mid 1700s.
the use of the blowpipe to determine the composition of minerals.His classic treatise on the use of the blowpipe in chemical analysis and for the examination of minerals was first published in Swedish in 1820.
www.geology-books.com /newcatalog.html   (16914 words)

 Metallurgy - Transition Metals
Atomic structure, chemical and physical properties, and table of nuclides.
Information on the electron configuration of these elements, and their properties.
Properties of the element, including its history, applications, and charateristics.
www.allmetallurgy.com /transitionmetals   (209 words)

This online reference section has links to information resources grouped as: almanacs, biography and genealogy, dictionaries, encyclopedias, glossaries, government information, handbooks and guidebooks, maps and geography, quotations, statistics, thesauruses, and other general ready reference sources.
The data presented here describe the people and the economy of the US for each state and county from 1790 to 1960.
Data is accessible and organized into decades for most of the time periods.
www.omeresa.net /schools/newphila/welty/ref.html   (4701 words)

 The National Geochemical Survey - Geochemical Mapping of the United States
These data will compose a complete, national-scale geochemical coverage of the US, and will enable construction of geochemical maps, refine estimates of baseline concentrations of chemical elements in the sampled media, and provide context for a wide variety of studies in the geological and environmental sciences.
The NGS incorporates geochemical data from a variety of sources, including existing analyses in USGS databases, reanalyses of samples in USGS archives, and analyses of newly collected samples.
At the present time, the NGS includes data covering ~80% of the land area of the US, including samples in all 50 states.
tin.er.usgs.gov /geochem/doc/home.htm   (359 words)

 STNews May/June 2001 - Access pre-1967 CAplus data with STN Easy   (Site not responding. Last check: 2007-10-11)
With the recent addition of 1947-1966 records to CAplus (see the Feature article in this issue), a new set of data is now available with STN Easy.
This year’s 125th anniversary of the American Chemical Society has prompted interest in historic events in chemistry.
1947-1966 was a time when, among many other exciting developments, several chemical elements were isolated for the first time.
www.cas.org /STNEWS/MAYJUN01/easystreet.html   (213 words)

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