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Topic: Synthetic element

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	element. The Columbia Encyclopedia, Sixth Edition. 2001-05
		These 6 extremely scarce elements and those that do not occur at all naturally were discovered when they were produced in the laboratory; they are often called the man-made, artificially produced, or synthetic elements.
		The atomic weight of an element is the mean (weighted average) of the atomic masses of all the naturally occurring isotopes.
		Elements with very similar chemical properties are often referred to as families; some families of elements include the halogens, the inert gases, and the alkali metals.
	www.bartleby.com /65/el/element.html (2007 words)

	Element, Chemical - Natural and synthetic elements, Classifying elements, Properties of the elements
		Synthetic element: An element that is made artificially in a laboratory but is generally not found in nature.
		Synthetic elements are usually produced in particle accelerators (devices used to increase the velocity of subatomic particles such as electrons and protons) or nuclear reactors (devices used to control the energy released by nuclear reactions).
		The chemical symbol of an element is a letter or pair of letters that stands for some given amount of the element, for example, for one atom of the element.
	www.scienceclarified.com /El-Ex/Element-Chemical.html (1693 words)

	Synthetic element: Encyclopedia of chemistry, analytics & pharmaceutics with 64,564 entries.
		These synthetic elements possess a half-life so short, relative to the age of the Earth that any atoms of these elements that may have existed when the Earth formed have long since decayed away.
		For synthetic elements the isotope formed depends on the means of synthesis, so the concept of natural isotope abundance has no meaning.
		Therefore for synthetic elements the total nucleon (protons plus neutrons) count of the most stable isotope (ie, the isotope with the longest half-life) is listed in brackets as the atomic mass.
	www.chemie.de /lexikon/e/Synthetic_elements (0 words)

	Chemistry : Periodic Table : darmstadtium : key information
		Element 110, darmstadtium, is a synthetic element that is not present in the environment at all.
		Unlike these lighter atoms, darmstadtium decays after a small fraction of a thousandth of a second into lighter elements by emitting α-particles which are the nuclei of helium atoms.
		This is because atoms of the element decompose through the emission of α-particles with a half life of only about 270 microseconds.
	www.webelements.com /webelements/elements/text/Ds/key.html (261 words)

	Synthetic Element Inventory
		But, like (86)Radon which is in the news as a natural hazard even though it lives less than 4 days, traces occur in nature so we do not usually classify it as a synthetic element.
		A few elements were so completely missing that only by deliberately arranging nuclear reactions did they get enough to see in a mass spectrometer.
		A second decoration might be added to indicate presence in our planet's crust, maybe intensifying the color for the radioactive elements that have not been seen in ores, or maybe fading the few which you know can be derived from Uranium ore stockpiles.
	www.newton.dep.anl.gov /askasci/chem03/chem03680.htm (599 words)

	Chemistry : Periodic Table : bohrium : key information
		Bohrium is a synthetic element that is not present in the environment at all.
		IUPAC are happy to name an element after Bohr but suggest bohrium (Bh) on the grounds that the first name of a person does not appear in the names of any other element named after a person.
		Only a few atoms of element 107, bohrium, have ever been made.
	www.webelements.com /webelements/elements/text/Bh/key.html (245 words)

	Engines
		The heat of compression along with a chemical reaction between the platinum element and the methenol based fuel causes ignition.
		Although castor oil is the traditional oil of choice, many fuels now contain synthetic oils or maybe a blend of castor and synthetic.
		Synthetic oils overcome these disadvantages but may lack in protecting the engine at extreme temperatures due to the fact that they can vaporize.
	www.totallymartin.com /rc/engines.htm (0 words)

	A Synthetic Environment
		It has been said several times on this blog how important a beard can be for a chemist.
		As far as I know he was not able to play an instrument very well and was not singing opera in the evening.
		It was not a big succes, but a named musical instrument is more unique than a named fractioning column or a named condensor.
	syntheticenvironment.blogspot.com (961 words)

	eBay Motors: AEM 21-2059DK Air Filter Element Conical Synthetic 4 in (item 320152851787 end time Sep-27-07 20:00:19 PDT)
		These AEM Dryflow synthetic air filters are designed to deliver superior filtration efficiency and dust trapping over oil-coated, cotton gauze filters.
		They feature an easy-to-clean synthetic filter media that does not degrade from cleaning like cotton gauze type filters.
		The synthetic filters use a reinforced internal cage that is lighter and stronger than mesh types, a urethane body that will not shrink or crack like plastisol-based products, and an integrated velocity stack to increase the structural rigidity of the filler neck while improving airflow.
	cgi.ebay.com /ebaymotors/AEM-21-2059DK-Air-Filter-Element-Conical-Synthetic-4-in_W0QQcmdZViewItemQQitemZ320152851787 (0 words)

	Synthetic Elements/Nuclear Chemistry
		Properties of these elements have been predicted from their positions in the periodic table; element 104 is expected to be chemically similar to hafnium, and element 105 to tantalum.
		Elements in this series with atomic numbers greater than that of uranium (92) are called transuranium elements; they are not found (except in minute amounts) on earth, but have been prepared synthetically.
		Elements with atomic numbers greater than 103 are not members of the actinide series; element 104 is the first of the transactinide elements.
	www.kent.k12.wa.us /KSD/KR/LIBRARY/SCIENCE/RESOURCES/NUKECHEM/synthetic_elements.html (426 words)

	NationMaster - Encyclopedia: Ununtrium (Site not responding. Last check: )
		A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements.
		The atomic mass of an element (also known as the relative atomic mass or average atomic mass or atomic weight) is the average atomic mass of all the chemical elements isotopes as found in a particular environment, weighted by isotopic abundance.
		The chemical elements labelled as synthetic are unstable, with a half-life so short (ranging from a fraction of millisecond to a few million years) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since...
	www.nationmaster.com /encyclopedia/Ununtrium (1305 words)

	synthetic element
		The chemical elements labelled as "synthetic" are unstable, with a half-life so short (from a few million years to a fraction of millisecond) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since completely decayed away.
		The first synthetic element discovered was technetium, which filled a gap in the periodic table, and the discovery that there were no stable isotopes of technetium explained its absence on Earth: its 4.2 million year half-life meant that none remained from the time of formation of the Earth.
		Elements of English grammar, synthetic and analytic: Designed for the use of schools, academies, and private learners
	www.abacci.com /wikipedia/topic.aspx?cur_title=synthetic_element (192 words)

	Brainboost - what is Seaborgium (Site not responding. Last check: )
		Seaborgium is a synthetic element whose most stable isotope 271 Sg has a half - life of 2.4 minute s.
		Seaborgium is a synthetic radioactive element and a member of the transuranic group of elements.
		Seaborgium is a synthetic element that is not present in the environment.
	www.brainboost.com /search.asp?Q=what+is+Seaborgium&lfmq=1 (353 words)

	Synthetic Spectra
		A photograph of a wafer con- taining the finished HF element (the large rectangular region on the bottom left).
		Figure 1 is a photograph of a wafer containing an HF element, and Figure 2 shows a scanning electron micrograph of a portion of the diffractive element.
		The increased linewidth is due to a combination of the finite spectral resolution of the 18 mm element, and the excess linewidth due to optical aberrations in the read-out apparatus.
	www.sandia.gov /mstc/technologies/microsensors/synthetic.html (755 words)

	synthetic elements — FactMonster.com
		synthetic elements, in chemistry, radioactive elements that were not discovered occurring in nature but as artificially produced isotopes.
		Elements 101 through 106 were first produced by fusing the nuclei of slightly lighter elements, such as
		Elements 107 through 112 were first produced by fusing the nuclei of medium-weight elements, such as
	www.factmonster.com /ce6/sci/A0847507.html (388 words)

	Synthetic element (Site not responding. Last check: )
		The chemical element s labelled as "synthetic" are unstable, with a half-life so short (from a few million years to a fraction of millisecond) relative to the age of the Earth that any atom s of that element that may have been present when the Earth formed have long since completely decayed away.
		The first synthetic element discovered was technetium, which filled a gap in the periodic table, and the discovery that there were no stable isotopes of technetium explained its absence on Earth: its 4.2 million year half-life meant that none remained from the time of formation of the Earth.
		Elements consist of atoms which have the same number of protons.
	www.serebella.com /encyclopedia/article-Synthetic_element.html (814 words)

	CM Filters, Filter Tech
		The element should not be affected by moisture which erodes paper elements, and it should withstand pressure surges without collapsing or rupturing.
		CM elements filter out particles down to 8 microns, half the size of what the average spin-on filter does and has a flow rate even when contaminated, that is far greater than that required by any automotive application.
		CM Elements can not be cleaned because they work on depth filtration design where particles are caught within millions of tiny passages which run through out the element.
	www.cmfilters.com /tech.cfm (822 words)

	[No title]
		An element is a substance that cannot be broken down into a simpler substance by ordinary chemistry -- heat, light, acids -- and every material thing in world is made up of combinations of about 90 elements.
		The periodic table lists elements horizontally in order of their atomic number (number of protons in the nucleus), and vertically in order of the number of electrons around the nucleus.
		When the researchers created element 114, they expected the atoms to have half-lives (the time it takes for half the atoms in a sample to decay) of microseconds, or even nanoseconds, but the atoms had half-lives of several seconds.
	usinfo.state.gov /xarchives/xmlview.html?p=washfile-english&y=2006&m=October&x=20061019095701lcnirellep0.4545099 (892 words)

	Synthetic Standards for Cements and Associated Raw Materials - CEMOXI Standards and Axios-Cement XRF
		CEMOXI is a set of synthetic standards together with an application set-up that will handle fused bead major element analysis of cement final product and cement raw materials.
		Prior to fusion the standards are preignited at 800ºC, except for gypsum, which is dried at 500ºC. The use of synthetic standards, made from traceable compounds, brings this method significantly closer to being a primary analytical solution, rather than a strictly comparative method using CRMs as standards.
		The accuracy of the Axios-Cement using CEMOXI and the SuperQ FP algorithm for major and minor element analyses in cements and related materials is phenomenal.
	www.azom.com /details.asp?ArticleID=3411 (795 words)

	How are synthetic elements made?
		Keep in mind that the identity of an element is defined by the number of protons in the nucleus of each atom of the element.
		Thus, in order to manufacture a new element, one that is not known in nature, we must create at least one atom whose atomic number (the number of protons in the nucleus) is different from any other known element.
		Pay particular attention to the elements at the bottom of the periodic table, referred to as the Actinide Series, since these contain many, but not all, of the man-made transuranic elements (elements beyond uranium in the table).
	hps.org /publicinformation/ate/q4086.html (722 words)

	Signal transmission assembly having reduced-friction and concentrated load distribution element for synthetic strength ...
		The invention of claim 1, wherein the individual synthetic fibrous strength members are comprised of fibers selected from a group consisting of: aramid, polyester, polytetrafluoroethylene, polysulfone, and polyamide fibers.
		The invention of claims 13, wherein the at least two synthetic fibrous strength members are impregnated with a material selected from a group consisting of graphite and fluoropolymers.
		The synthetic strength members 21 are covered, wrapped or enclosed by a second friction reducing layer or low friction layer 24.
	www.freepatentsonline.com /5706382.html (4159 words)

	IBM SJ 45-2 \| Generation of efficient parsers through direct compilation of XML Schema grammars
		Any global element declaration may serve as the head of a substitution group, and any element with a properly derived type may declare itself to be substitutable for the head element.
		To represent this explicitly in the compiler, we augment the element declaration component with a synthetic-content-model property that represents the expanded form of the element declaration (Figure 2).
		In order to distinguish an element declaration (which is always considered to be the head of a substitution group) from the terms of this synthetic choice, we define a synthetic component called the Synthetic-Element, which like regular element declarations, wildcards, and model groups may be the term of any particle.
	www.research.ibm.com /journal/sj/452/perkins.html (8663 words)

	Honda ST1300 Oil, Filters, Tires, Brakes
		Synthetic oils were originally designed for the purpose of having a very pure base oil with excellent properties.
		Synthetic oils made from pure PAOs and/or Diesters typically do not have any VI enhancers at all, so these oils are not subject to viscosity breakdown due to shearing of the VI package.
		Synthetics possess unusual solvent power for dissolving gasoline and diesel fuel residues which enter the crankcase as contaminants from combustion.
	www.micapeak.com /bike/ST/ST1300/Oils.html (9117 words)

	Ununnilium (Element)
		Ununnilium, is a synthetic element that is not present in the environment at all.
		Chemically, the element 110 is in the same Group as nickel, palladium, and platinum (Group 10).
		Only a few atoms of element 110 have ever been made, initially through a nuclear reaction involving fusion of an isotope of lead, Pb, with one of nickel, Ni.
	www.tamuk.edu /chemistry/WebElements/ununnilium_element.htm (134 words)

	C&EN: COVER STORY - THE MANY FACETS OF MAN-MADE DIAMONDS
		Tiny synthetic diamonds are used in saw blades for cutting asphalt and marble, in drill bits for oil and gas drilling, and even as an exfoliant in cosmetics.
		The first synthetic diamonds (diamond grit) were produced in the early 1950s by researchers at the Allmanna Svenska Elektriska Aktiebolaget Laboratory in Stockholm, Sweden.
		The former is easy: Both Element Six and Apollo report that they can use their CVD methods to make boron-doped single-crystal diamond wafers that are excellent p-type semiconductors.
	pubs.acs.org /cen/coverstory/8205/8205diamonds.html (2488 words)

	Element: Free Encyclopedia Articles at Questia.com Online Library
		Although Aristotle proposed that an element is U+0022one of those simple bodies into which other bodies can be decomposed and which itself is not capable of being divided into others,U+0022 he thought the metals to be made of water, and called mercury U+0022silver waterU+0022 (chutos arguros).
		The Element of Form by Linda Christy...Conestoga Valley Middle School use the Elements of Art as a basis for their art activities...unit that teaches the students about the element of form is a lesson that I found to take...
		ELEMENT in chemistry, a substance that cannot be decomposed...as a compound can be decomposed into its constituent elements by means of a chemical reaction, but no further simplification can be achieved.
	www.questia.com /library/encyclopedia/element.jsp (3427 words)

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