Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)
A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.
Metals that constitute group 1(formerly group Ia) of the periodic table. They are the most strongly electropositive of the metals. Note that HYDROGEN is not considered an alkali metal even though it falls under the group 1 heading in the periodic table.
A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.
A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.
A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.
Metals that constitute the group 2 (formerly group IIa) of the periodic table.
A trace element with atomic symbol Mn, atomic number 25, and atomic weight 54.94. It is concentrated in cell mitochondria, mostly in the pituitary gland, liver, pancreas, kidney, and bone, influences the synthesis of mucopolysaccharides, stimulates hepatic synthesis of cholesterol and fatty acids, and is a cofactor in many enzymes, including arginase and alkaline phosphatase in the liver. (From AMA Drug Evaluations Annual 1992, p2035)
Positively charged atoms, radicals or groups of atoms with a valence of plus 2, which travel to the cathode or negative pole during electrolysis.
A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.
A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.
A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.19, symbol Pb. (Dorland, 28th)
Chemicals that bind to and remove ions from solutions. Many chelating agents function through the formation of COORDINATION COMPLEXES with METALS.
A silver metallic element that exists as a liquid at room temperature. It has the atomic symbol Hg (from hydrargyrum, liquid silver), atomic number 80, and atomic weight 200.59. Mercury is used in many industrial applications and its salts have been employed therapeutically as purgatives, antisyphilitics, disinfectants, and astringents. It can be absorbed through the skin and mucous membranes which leads to MERCURY POISONING. Because of its toxicity, the clinical use of mercury and mercurials is diminishing.
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.
A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.
An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.
Neutral or negatively charged ligands bonded to metal cations or neutral atoms. The number of ligand atoms to which the metal center is directly bonded is the metal cation's coordination number, and this number is always greater than the regular valence or oxidation number of the metal. A coordination complex can be negative, neutral, or positively charged.
The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.
A metallic element that has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. It is important for the activity of many enzymes, especially those involved in OXIDATIVE PHOSPHORYLATION.
The parts of a macromolecule that directly participate in its specific combination with another molecule.
Proteins that have one or more tightly bound metal ions forming part of their structure. (Dorland, 28th ed)
Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.
Metals with low specific gravity, typically smaller than 5, characterized by a single valence (1, 2, or 3), a simple spectrum, strong electromotive force (positive), and colorless compounds. (From Grant & Hackh's Chemical Dictionary, 5th ed)
The rate dynamics in chemical or physical systems.
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
Positively charged atoms, radicals or groups of atoms which travel to the cathode or negative pole during electrolysis.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.
A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.
Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)
A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).
A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)
The spectrometric analysis of fluorescent X-RAYS, i.e. X-rays emitted after bombarding matter with high energy particles such as PROTONS; ELECTRONS; or higher energy X-rays. Identification of ELEMENTS by this technique is based on the specific type of X-rays that are emitted which are characteristic of the specific elements in the material being analyzed. The characteristic X-rays are distinguished and/or quantified by either wavelength dispersive or energy dispersive methods.
A rare, metallic element designated by the symbol, Ga, atomic number 31, and atomic weight 69.72.
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.
Contamination of the air, bodies of water, or land with substances that are harmful to human health and the environment.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.
Worthless, damaged, defective, superfluous or effluent material from industrial operations.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.
An essential amino acid that is required for the production of HISTAMINE.
Conditions associated with damage or dysfunction of the nervous system caused by exposure to heavy metals, which may cause a variety of central, peripheral, or autonomic nervous system injuries.
Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
A metallic element with the atomic symbol V, atomic number 23, and atomic weight 50.94. It is used in the manufacture of vanadium steel. Prolonged exposure can lead to chronic intoxication caused by absorption usually via the lungs.
Inorganic compounds that contain zinc as an integral part of the molecule.
Inorganic chemicals that contain manganese as an integral part of the molecule.
Proteins found in any species of bacterium.
Uranium. A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.
A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
The gradual destruction of a metal or alloy due to oxidation or action of a chemical agent. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.
Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.
A tough, malleable, iron-based alloy containing up to, but no more than, two percent carbon and often other metals. It is used in medicine and dentistry in implants and instrumentation.
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Inorganic or organic compounds that contain divalent iron.
Elements of the lanthanoid series including atomic number 57 (LANTHANUM) through atomic number 71 (LUTETIUM).
A plant genus of the family BRASSICACEAE that is grown in rock gardens. T. arvense is grown for its large, round ornamental seed pods. The common name of pennycress usually refers to this genus but may also refer to the genus Microthlaspi.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
RNA that has catalytic activity. The catalytic RNA sequence folds to form a complex surface that can function as an enzyme in reactions with itself and other molecules. It may function even in the absence of protein. There are numerous examples of RNA species that are acted upon by catalytic RNA, however the scope of this enzyme class is not limited to a particular type of substrate.
Adverse effect upon bodies of water (LAKES; RIVERS; seas; groundwater etc.) caused by CHEMICAL WATER POLLUTANTS.
The region of an enzyme that interacts with its substrate to cause the enzymatic reaction.
A metallic element with the atomic symbol Mo, atomic number 42, and atomic weight 95.94. It is an essential trace element, being a component of the enzymes xanthine oxidase, aldehyde oxidase, and nitrate reductase. (From Dorland, 27th ed)
A class of nonmetals such as arsenic that have some of the chemical properties of a metal.
Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Inorganic or organic compounds containing trivalent iron.
Beryllium. An element with the atomic symbol Be, atomic number 4, and atomic weight 9.01218. Short exposure to this element can lead to a type of poisoning known as BERYLLIOSIS.
The protein components of enzyme complexes (HOLOENZYMES). An apoenzyme is the holoenzyme minus any cofactors (ENZYME COFACTORS) or prosthetic groups required for the enzymatic function.
Terbium. An element of the rare earth family of metals. It has the atomic symbol Tb, atomic number 65, and atomic weight 158.92.
Ytterbium. An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Proteins that specifically bind to IRON.
Materials that have a limited and usually variable electrical conductivity. They are particularly useful for the production of solid-state electronic devices.
Rhodium. A hard and rare metal of the platinum group, atomic number 45, atomic weight 102.905, symbol Rh. (Dorland, 28th ed)
Compounds containing the -SH radical.
A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide.
Metal-oxide-semiconductor FET (MOSFET)[edit]. Main article: MOSFET. The metal-oxide-semiconductor field-effect transistor ( ... Metal-semiconductor FETs (MESFETs) are JFETs in which the reverse biased p-n junction is replaced by a metal-semiconductor ... Metal-semiconductor field-effect transistor (MESFET), similar to JFET with a Schottky junction instead of a p-n junction *High- ... Metal-oxide-semiconductor field-effect transistor (MOSFET), where the gate is insulated by a shallow layer of insulator *p-type ...
Pages in category "Fabrication (metal)". The following 26 pages are in this category, out of 26 total. This list may not ... Retrieved from "https://en.wikipedia.org/w/index.php?title=Category:Fabrication_(metal)&oldid=545890034" ...
In metals[edit]. The Langevin theory is not the full picture for metals because there are also non-localized electrons. The ... and many metals including copper, particularly the heavy ones with many core electrons, such as mercury, gold and bismuth. The ...
Metal Embrittlement (ME)[edit]. ME happens when a low-melting-point metal is placed in contact with a metal with higher melting ... Rostoker, W. (1960). Embrittlement by Liquid Metals. New York: Reinhold.. *^ Wiederhorn, S. M.; Bolz, L. H. (1970-10-01). " ...
Metal joining[edit]. In high-temperature metal joining processes (welding, brazing and soldering), flux is a substance which is ... Fluxes for metal joining[edit]. The composition of fluxes is tailored for the required properties - the base metals and their ... In soldering of metals, flux serves a threefold purpose: it removes any oxidized metal from the surfaces to be soldered, seals ... Some metals are classified as "unsolderable" in air, and have to be either coated with another metal before soldering or ...
Rock/metal music[edit]. Rock and metal artists from Saudi Arabia include: *The AccoLade ...
Metals[edit]. Immiscible metals are unable to form alloys with each other. Typically, a mixture will be possible in the molten ... There also exist metals that are immiscible in the liquid state. One with industrial importance is that liquid zinc and liquid ... One example of immiscibility in metals is copper and cobalt, where rapid freezing to form solid precipitates has been used to ... This property allows solid precipitates to be formed by rapidly freezing a molten mixture of immiscible metals. ...
For the biological metals reclamation or bio-leaching, the process uses microorganisms to digest metal oxides selectively. Then ... Hydrometallurgical metal reclamation, Direct recycling method and Biological metals reclamation. The most widely used processes ... Nickel-metal hydride batteries are now considered a relatively mature technology.[7] While less efficient (60-70%) in charging ... "Nickel Metal Hydride NiMH Batteries". www.mpoweruk.com. Retrieved 26 April 2020.. ...
Metal[edit]. Various metals and alloys may be used to make glasses such as gold, silver, aluminum, beryllium, stainless steel, ... pair of brows or caps, plastic or metal caps which fit over the top of the eye wires for style enhancement and to provide ... Comfort cable temples: similar to the riding bow, but made from a springy cable of coiled metal, sometimes inside a plastic or ... For instance, it is now possible to purchase frames made of special memory metal alloys that return to their correct shape ...
Extraction of rare-earth metals from monazite ore[edit]. Process flow diagram for extraction of rare-earth metals from monazite ... Monazite ore contains 55-60% rare-earth metal oxides along with 24 to 29% P2O5, 5 to 10% ThO2, and 0.2 to 0.4% U3O8. ... Monazite is a reddish-brown phosphate mineral containing rare-earth metals. It occurs usually in small isolated crystals. It ... Neutralization: Add NH3(aq) to remaining monazite solution to create rare-earth-metal precipitate at a pH of 2.3. ...
Metal water bottles are growing in popularity. Made primarily from stainless steel or aluminum, they are durable and retain ... Metal water bottles can be heavier than their plastic counterparts and readily transfer temperature of contents to external ... Carbon filtration will not eliminate pathogens, metals or nitrates from water.[7] Carbon filters must be changed regularly to ... The lowest impact water bottles are those made of glass or metal. They are not made from petroleum and are easily recyclable. ...
... s are also treated with metal deactivators, which are compounds that sequester (deactivate) metal salts that otherwise ... Fuel stabilizers (antioxidants and metal deactivators)[edit]. Substituted phenols and derivatives of phenylenediamine are ... The metal impurities might arise from the engine itself or as contaminants in the fuel. ... The formation of gums is accelerated by copper salts, which can be neutralized by additives called metal deactivators. ...
Metal[edit]. Iron and steel[edit]. Either used in sheet or alternatively, plate [15] for all-metal hulls or for isolated ... A relatively expensive metal used only very occasionally in boatbuilding is cupronickel. Arguably the ideal metal for boat ... Gooseneck: a pivoting metal fitting that joins a boom to a mast. Many goosenecks can be adjusted to trim the luff of a sail. ... Rowlock (pronounced "rollock";(also "oarlock"): a 'U' shaped metal device that secures an oar and acts as a fulcrum during the ...
Uses of metal[edit]. The Book of Mormon mentions a number of metals, and the use of metal. However, while pre-Columbian tribes ... D. Hosler and Andrew MacFarlane, "Copper Sources, Metal Production and Metals Trade in Late Post-Classic Mesoamerica," Science ... These metals include brass, iron ore, copper, silver, and gold.[90] However, the metals were never used to make swords:. Even ... Metals were used for a variety of tools in the Old World, such as weapons, while in the Americas, metals were used as prestige ...
Metals[edit]. Metals can also be used to create MEMS elements. While metals do not have some of the advantages displayed by ... Metals can be deposited by electroplating, evaporation, and sputtering processes. Commonly used metals include gold, nickel, ... 2, silicon nitride, and various metals for masking. Its reaction to silicon is "plasmaless", is purely chemical and spontaneous ... Photolithography is typically used with metal or other thin film deposition, wet and dry etching. Sometimes, photolithography ...
Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ... Metal and alloys[edit]. Bismuth is used in metal alloys with other metals such as iron. These alloys are used in automatic ... Agricola, in De Natura Fossilium (c. 1546) states that bismuth is a distinct metal in a family of metals including tin and lead ... Bismuth will behave similarly with another of its major metals, copper.[57] The raw bismuth metal from both processes contains ...
Transition metal compounds. From left to right, aqueous solutions of: Co(NO. 3). 2 (red); K. 2Cr. 2O. 7 (orange); K. 2CrO. 4 ( ... Metal-based pigments[edit]. Main article: List of inorganic pigments. *Cadmium pigments: cadmium yellow, cadmium red, cadmium ...
Metal-organic frameworks (MOFs)[edit]. Metal-organic frameworks are one of the most promising new technologies for carbon ... A system based on metal oxide primarily consisted of a metal oxide sorbent canister and a regenerator assembly. It worked by ... The metal-oxide sorbent canister was regenerated by pumping air at approximately 400 °F (204 °C) through it at a standard flow ... The new metal-oxide-based system replaces the existing non-regenerable lithium hydroxide (LiOH) carbon dioxide (CO2) removal ...
One such iridium complex, [Ir(η2-C60)(CO)Cl(Ph2CH2C6H4OCH2Ph)2] has been prepared where the metal center projects two electron- ... Metal complexes[edit]. Main article: Fullerene ligand. C60 forms complexes akin to the more common alkenes. Complexes have been ... When alkali metals are doped into these voids, C60 converts from a semiconductor into a conductor or even superconductor.[33][ ... Metal atoms or certain small molecules such as H2 and noble gas can be encapsulated inside the C60 cage. These endohedral ...
Precursor to Mg metal[edit]. Anhydrous MgCl2 is the main precursor to metallic magnesium. The reduction of Mg2+ into metallic ... Anhydrous magnesium chloride is the principal precursor to magnesium metal, which is produced on a large scale. Hydrated ... Dennis B. Malpass (2010). "Commercially Available Metal Alkyls and Their Use in Polyolefin Catalysts". In Ray Hoff; Robert T. ... Mathers (eds.). Handbook of Transition Metal Polymerization Catalysts. John Wiley & Sons, Inc. pp. 1-28. doi:10.1002/ ...
Nickel Metal Hydride Handbook. Panasonic.. *^ a b c d e f g h Charge Sealed Nickel-Metal Hydride Batteries. Ni-MH Technical ... Nickel Metal Hydride (NiMh) Approx 1% per day if unused.. *^ "GP Batteries (Hong Kong) FAQ". Archived from the original on 2007 ... Nickel Metal Hydride Handbook (PDF) (NiMH02.01 ed.). Energizer Battery Manufacturing.. *^ "Japanese Nonwoven Battery ... A nickel-metal hydride battery, abbreviated NiMH or Ni-MH, is a type of rechargeable battery. The chemical reaction at the ...
Annealing metal sheets[edit]. An early reference to the curve-shortening flow by William W. Mullins (1956) motivates it as a ... The curve-shortening flow was originally studied as a model for annealing of metal sheets. Later, it was applied in image ... The one-dimensional case of this flow, the curve-shortening flow, corresponds to annealing sheets of metal that are thin enough ... in which heat treatment causes the boundaries between grains of crystallized metal to shift. Unlike soap films, which are ...
Reaction with amphoteric metals and oxides[edit]. Glass reacts slowly with aqueous sodium hydroxide solutions at ambient ... Dissolving amphoteric metals and compounds[edit]. Strong bases attack aluminium. Sodium hydroxide reacts with aluminium and ... Other amphoteric metals are zinc and lead which dissolve in concentrated sodium hydroxide solutions to give sodium zincate and ... A few transition metals, however, may react vigorously with sodium hydroxide. In 1986, an aluminium road tanker in the UK was ...
Metal ion binding[edit]. Beyond the iron-sulfur proteins, many other metal cofactors in enzymes are bound to the thiolate ... The sulfhydryl group also has a high affinity for heavy metals, so that proteins containing cysteine, such as metallothionein, ... will bind metals such as mercury, lead, and cadmium tightly.[18] Roles in protein structure[edit]. In the translation of ...
Cu is a transition metal with a relatively strong electronegativity yielding more covalent bonds than other metals which allows ... Transition metal chemistry[edit]. The Jahn-Teller effect is responsible for the tetragonal distortion of the hexaaquacopper(II ... Janes, Rob; Moore, Elaine A. (2004). Metal-ligand bonding. Royal Society of Chemistry. ISBN 978-0-85404-979-0.. ... McClure, D. S. (1957). "The distribution of transition metal cations in spinels". J. Phys. Chem. Solids. 3 (3): 311-317. ...
Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ... Metal-acid. In the laboratory, H. 2 is usually prepared by the reaction of dilute non-oxidizing acids on some reactive metals ... and is soluble in both nanocrystalline and amorphous metals.[99] Hydrogen solubility in metals is influenced by local ... Hydrogen is a concern in metallurgy as it can embrittle many metals,[11] complicating the design of pipelines and storage tanks ...
At high metal temperatures, the Wiedemann-Franz law holds: K. σ. =. π. 2. 3. (. k. e. ). 2. T. {\displaystyle {K \over \sigma ... This is the source of resistance of metals.. *^ Faber, T.E. (1972). Introduction to the Theory of Liquid Metals. Cambridge ... At high temperatures, the resistance of a metal increases linearly with temperature. As the temperature of a metal is reduced, ... Mathematically the temperature dependence of the resistivity ρ of a metal is given by the Bloch-Grüneisen formula: ρ. (. T. ). ...
Aluminum, iron and other metals[edit]. Further information: Aluminum § Health concerns. Tea drinking accounts for a high ...
Metal dichalcogenides[edit]. Another well-known family of intercalation hosts are the layered metal dichalcogenides such as ...
Metal single crystal substrates[edit]. Metal single crystals are often used as substrates in graphene growth since they form a ... Preparation methods of metal single crystal substrates[edit]. There are several methods how good quality metal single crystal ... 4.3 Metal single crystal substrates *4.3.1 Preparation methods of metal single crystal substrates ... In these methods, the metal is first melted, after which the metal is let to crystallize around a seed crystal. After ...
The higher relative values of these metals are driven by various factors including their rarity, uses in industrial processes ... A classification of metals that are considered to be rare and/or have a high economic value. ... What are Precious Metals. Precious metals refer to the classification of metals that are considered to be rare and/or have a ... BREAKING DOWN Precious Metals. Investors can participate in precious metals by purchasing the physical asset, purchasing ...
Since 1961, Precoat Metals has been setting the standards in the coil coatings industry; worldwide as an innovator in both ...
... and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles ... Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles ... Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles ... Protection of Metals and Physical Chemistry of Surfaces is a peer reviewed journal. We use a single blind blind peer review ...
Below are the Worker Outreach Activities for Nuclear Metals, Inc.:. * March 14-15, 2012 SEC Outreach Meeting for Nuclear Metals ... Public Comments on Nuclear Metals, Inc. Documents. How to Submit Comments. Comments on Nuclear Metals, Inc. Documents can be ... Advisory Board and NIOSH Discussions on Nuclear Metals, Inc.. The Nuclear Metals, Inc. discussion papers listed below are ... NIOSH/DCAS: Nuclear Metals Inc. SEC Petition Evaluation Report (1980-1990) (Addendum) pdf icon[454 KB (48 pages)]. April 8, ...
All other metals are light metals. Base, noble and precious metals. Main articles: Base metal, noble metal, and precious metal ... Heavy and light metals. Main articles: Heavy metals and Light metals. A heavy metal is any relatively dense metal or metalloid. ... brittle metals and refractory metals; white metals; heavy and light metals; and base, noble, and precious metals. The Metallic ... Alkali metal Alkaline earth metal Lan-thanide Actinide Transition metal Post-​transition metal Metalloid Reactive nonmetal ...
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Both patients had metal-on-metal hip prostheses, and both patients cobalt levels were reduced after removal of the metal-on- ... An additional problem with metal-on-metal bearings is that they release a variety of metal ions into local tissue and the ... 2008 John Charnley award: metal ion levels after metal-on-metal total hip arthroplasty: a randomized trial. Clin Orthop Relat ... In an attempt to decrease wear at the interface of the articulation, metal-on-metal bearings (Box), composed of cobalt and ...
... the Fast Money guys reveal how theyre trading precious metals in the wake of the recent carnage. Also find out how theyre ... In Thursdays Web.Extra, the Fast Money guys reveal how theyre trading precious metals in the wake of the recent carnage. Also ...
Latest Precious metals industry News. Gas leak prompts hotel evacuation, sends 16 to hospital. Jul. 13, 2019 2:33 PM EDT ...
The metals we call noble wont. combine with other elements,. dont interact with water, air.. Of course that means they dont ...
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Several metals, including lithium, sodium and magnesium, can burn easily, and from time to time large amounts catch fire in ... But even heaps of burning metal need not cause immediate panic. They dont blow up; instead they tend to build up ash that ... If you ever see a large industrial metal fire (yes, they happen) on the news, you may be surprised at what the firefighters do ... Metal fires are just too hot to handle.. ACHTUNG! Dont try this at home. Burning metals are dangerous and unpredictable. ...
Trade the most liquid metals markets in the world with CME Group Metals Products including Gold, Copper, and Silver Futures and ... Precious Metals *Manage your risk in the highly responsive metals markets with Precious Metals, including gold, silver, ... Q2 Precious Metals Update *Check in on the Q2 Precious Metals markets, including a 14% rise in open interest for Gold futures a ... Metals Options *Express your opinion in the metals market and manage price risk with our comprehensive suite of COMEX and NYMEX ...
... potentially toxic metals. Heavy metals testing is used to screen for poisoning due to metals such as lead, mercury, arsenic, ... Some metals are much more toxic than others, and one form of a metal may be more harmful than other forms, such as an organic ... Heavy metals testing is used to screen for or to diagnose heavy metal poisoning in those who may have been acutely or ... A heavy metals panel is a group of tests that measures the quantity of specific potentially toxic metals in the blood, urine or ...
One common myth is that this method provides a total metals result, but this is not the case, as many silicate minerals are not ... The energy emitted will be at specific wavelengths, according to the metals present in the sample, and this energy is detected ... The preparation method is critical to assessing the concentration of metals in a soil sample. The following are questions to be ... Subpart XXXXXX-National Emission Standards for Hazardous Air Pollutants Area Source Standards for Nine Metal Fabrication and ...
While some metals are essential as nutrients, all metals can be toxic at some level. Some metals are toxic in minute amounts. ... Suspended metals are those that remain on the 0.45 μM filter. "Acid extractable metals" refers to the concentration of metals ... One reason to list metals as a candidate cause is the presence of metal sources or other evidence of metals in a stream or ... While metal precipitation removes much metal from the water column, the water still may carry toxic metal concentrations ...
Public Comments on Metals and Controls Corp. Documents. How to Submit Comments. Comments on Metals and Controls Corp. Documents ... Advisory Board Work Group on Metals and Controls Corp.. This Work Group is responsible for a review of the Metals and Controls ... Advisory Board and NIOSH Discussions on Metals and Controls Corp.. The Metals and Controls Corp. discussion papers listed below ... NIOSH/ORAU: Metals and Controls Corp. Maintenance Exposure Model dated October 24, 2018 pdf icon[60 KB (19 pages)]. October 24 ...
Metal deactivators, or metal deactivating agents (MDA) are fuel additives and oil additives used to stabilize fluids by ... Metal Deactivators *^ Dabelstein, W.; Reglitzky A.; Schutze A.; Reders, K. "Automotive Fuels". Ullmanns Encyclopedia of ... An example of a metal deactivator used for gasoline and jet fuels is salpn. It is used in turbine and jet fuels, diesel, ... Metal deactivators inhibit the catalytic effects of such ions, especially copper, retarding the formation of gummy residues (e. ...
Pages in category "Alkali metals". The following 7 pages are in this category, out of 7 total. ... Media in category "Alkali metals". The following 5 files are in this category, out of 5 total. ... Alkali metals reations.webm 2 min 6 s, 540 × 360; 9.16 MB. ... Category:Alkali metals. From Wikimedia Commons, the free media ... Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Alkali_metals&oldid=257274741" ...
... Paul Vigna and Lear Capital CEO Scott Carter discuss how commodities will be affected by the ... liquidity and thats to be bullish for the metals market as well as equities ... but thats assuming that they cut ten billion ... even overseas for all we focus alot on on equities is going to affect other markets of all bonds obviously but also the metals ...
Commercial Metals Co. reported second-quarter net income Tuesday of $80.1 million, or $1.29 a share, compared with $56.6 ... NEW YORK (MarketWatch) - Commercial Metals Co. CMC, -1.37% reported second-quarter net income Tuesday of $80.1 million, or $ ... according to the steel and metals companys outlook. ...
Much has yet to be learned regarding the alloys of metals, because a very small difference in the proportions of the metals ... This table exhibits the remarkable fact that cast iron is harder than all the other metals; it was found to be harder than any ... It was found that some brasses were harder than any of the metals composing them, and strange to relate, this hardness is due ... Calvert and Johnson made a series of experiments with pretty large masses of metal to test their comparative hardness; and the ...
They are generally designed to precipitate trace metals to their solubility limits and obtain additional removal by ... Source for information on Heavy Metals Precipitation: Environmental Encyclopedia dictionary. ... The principle technology to remove metals pollutants from wastewater is by chemical precipitation. Chemical precipitation ... Precipitation processes are characterized by the solubility of the metal to be removed. ...
Gold, aluminum and various other metals were also mostly higher. ... Weaker Dollar Boosts Metals. Prices for copper, gold, aluminum ... Copper prices rose on Tuesday, with a drop in the U.S. dollar allowing the industrial metal to recover from heavy selling last ...
Then, they grew all kinds of metal nanocrystals measuring between 2 and 200 nanometers on what they call a cotton assembly ... have created a new form of metal crystals grown on cotton. Theyve used acid-treated cellulose fibers from cotton to ... nickel and other metal and metal-oxide nanocrystals quickly and of uniform size, Shin said. The metals display catalytic, ... Growing metals on cotton. Researchers at the Pacific Northwest National Laboratory (PNNL) have created a new form of metal ...
... metals represent up to 75% of the elements in the principal groups and all the elements in the accessory groups, the ... Although so-called metal test series with rarely sensitizing metals for patch testing exist, most of these metals have not been ... Because metals may have an irritant potential and some metals are even toxic to the human organism, it is mandatory that the ... Apart from the common sensitizing metals, nickel, cobalt, and chromium, there are many more commonly occurring metals present ...
METALS CONCEPT The six alkaline earth [2] metals-beryllium, magnesium, calcium, strontium, barium, and radium-comprise Group 2 ... The alkaline earth metals are less reactive than the alkali metals, but like the alkali metals they are much more reactive than ... Characteristics of the Alkaline Earth Metals. Like the alkali metals, the alkaline earth metals have the properties of a base, ... These include (in addition to the alkaline earth metals and the alkali metals) the transition metals, halogens, noble gases, ...
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... transition metals, other metals, metalloids, non-metals, halogens, noble gases, and rare-earth metals. These rare-earth metals ... Base Metals In chemistry, metals that oxidize or corrode easily are referred to as base metals. These industrial metals ... Among these elements are base metals, precious metals, and rare-earth metals, which provide a variety of opportunities for ... precious metals are valuable - much more so than the base metals. Precious metals are used for jewelry, art, coins, dental work ...
About Silvercorp Metals Inc. Silvercorp Metals Inc. (Silvercorp) is a mining company producing silver, lead and zinc metals in ... BRIEF-Silvercorp Metals Qtrly Net Income Attributable To Equity Shareholders $0.08 Per Share. * SILVERCORP METALS INC - QTRLY ... BRIEF-Silvercorp Metals announces share repurchase program. * Silvercorp Metals Inc - announces Normal Course Issuer bid to ... BRIEF-Silvercorp Metals Q2 earnings per share $0.07. * Q2 sales rose 3 percent to $47.5 million Source text for Eikon: Further ...
  • In chemistry, two elements that would otherwise qualify (in physics) as brittle metals- arsenic and antimony -are commonly instead recognised as metalloids , on account of their chemistry (predominately non-metallic for arsenic, and balanced between metallicity and nonmetallicity for antimony). (wikipedia.org)
  • The number is inexact as the boundaries between metals, nonmetals , and metalloids fluctuate slightly due to a lack of universally accepted definitions of the categories involved. (wikipedia.org)
  • Metals and metalloids are electropositive elements that occur in all ecosystems, although natural concentrations vary according to local geology. (epa.gov)
  • This module addresses water column contamination by metals and metalloids that commonly cause toxic effects. (epa.gov)
  • thus all elements are classified either as metals, metalloids, and nonmetals. (encyclopedia.com)
  • In the past decade, sporadic shortages of metals and metalloids crucial to modern technology have inspired attempts to determine the relative "criticality" of various materials as a guide to materials scientists and product designers. (pnas.org)
  • In the present study, we develop a comprehensive, flexible, and transparent approach that we apply to 62 metals and metalloids. (pnas.org)
  • We here characterize the criticality of 62 metals and metalloids in a 3D "criticality space" consisting of supply risk, environmental implications, and vulnerability to supply restriction. (pnas.org)
  • Metals, metalloids, and radionuclides all are trace elements that occur naturally in the Earth's crust. (usgs.gov)
  • The history of refined metals is thought to begin with the use of copper about 11,000 years ago. (wikipedia.org)
  • Their respective densities of 1.7, 2.7 and 4.5 g/cm 3 can be compared to those of the older structural metals, like iron at 7.9 and copper at 8.9 g/cm 3 . (wikipedia.org)
  • C3 Metals Inc. is focused on creating substantive long-term value for its shareholders through the discovery and development of large copper and gold deposits. (yahoo.com)
  • C3 Metals also holds a 100% interest in five licenses covering 207 km 2 of highly prospective copper-gold terrain in Jamaica, a 100% interest in two porphyry copper-gold properties (one under option to Tocvan Ventures) covering 304 km 2 in the Cascade Magmatic Arc of southwestern British Columbia and a 100% interest in the 46 km 2 Stewart Brook gold project in the Meguma belt of Nova Scotia. (yahoo.com)
  • Other panels may include one or more additional metals, such as cadmium, copper , or zinc. (labtestsonline.org)
  • Metal deactivators inhibit the catalytic effects of such ions, especially copper , retarding the formation of gummy residues (e.g. gels containing copper mercaptide ). (wikipedia.org)
  • Wai In a series of bronze alloys containing tin \fi and copper, it was found that an excess of tin ^U was the cause of softness, while an excess of :opper, although it is such a malleable metal, is the-cause of brittleness. (scientificamerican.com)
  • In alloys of copper and tin-common bronze- an excess of tin renders the alloy soft, as would be expected, because it is the softer metal. (scientificamerican.com)
  • On the other hand, an increased quantity of copper-from but one-third to that of the quantity of tin in the bronze, up until it (the copper) is four times the quantity of tin-renders the alloy brittle, a result which would not be expected, judging from the nature of the metals in their simple conditions. (scientificamerican.com)
  • Copper prices rose on Tuesday, with a drop in the U.S. dollar allowing the industrial metal to recover from heavy selling last week. (wsj.com)
  • Using acid-treated cellulose fibers from cotton as a natural template, the PNNL team has been able to grow gold, silver, palladium, platinum, copper, nickel and other metal and metal-oxide nanocrystals quickly and of uniform size, Shin said. (zdnet.com)
  • These industrial metals include copper (Cu on the periodic table), nickel (Ni), aluminum (Al), zinc (Zn), lead (Pb), tin (Sn) and iron (Fe)/steel (an alloy of iron and carbon). (investopedia.com)
  • Base metals are generally plentiful and are used in a variety of commercial and industrial applications, such as copper plumbing, aluminum cans and the steel used in automobile production. (investopedia.com)
  • Futures and options contracts of individual metals can be traded, such as copper futures (product symbol: HG) and options (product symbol: HX) on CME Globex. (investopedia.com)
  • In addition to iron, early guards were made from alloys of copper and other 'soft metals. (earthlink.net)
  • The copper carbonate is first heated to produce copper(II) oxide , which is then reduced to the metal using carbon as a reducing agent . (rsc.org)
  • It contains copper, but how can copper metal be obtained from it? (rsc.org)
  • While the copper(II) oxide produced by heating cools down, discuss how to get the oxygen out of the oxide, leaving the metal itself. (rsc.org)
  • The purpose of the thin layer of charcoal on the surface of the mixture is to minimise the chance of the hot copper metal re-oxidising during the pouring-out process. (rsc.org)
  • Scrap metal , used metals that are an important source of industrial metals and alloys, particularly in the production of steel, copper , lead, aluminum , and zinc . (britannica.com)
  • Three-month copper on the London Metal Exchange eased 0.1 percent to $6389 a tonne by 0208 GMT, while nickel fell 0.2 percent, zinc was down 0.2 percent and lead decreased 0.3 percent. (cnbc.com)
  • The list of most conductive metals includes silver, copper and gold. (reference.com)
  • The metals that conduct electricity the best are silver, copper and aluminum. (reference.com)
  • Tin is too soft to be used by itself for architectural purposes so it generally falls into two categories: the alloying of tin with other metals such as copper to form bronze, and the coating of tin on harder metals, such as tinplated iron or steel. (wikipedia.org)
  • In 1969, the plant in Cologne was shut down and the remaining works were combined into seven business units: Copper and copper alloys Conducting materials Prefabricated parts Nickel and special materials Light metal Plastics processing Packaging solutions Despite the restructuring and some acquisitions in the 1970s, sales continued to decline. (wikipedia.org)
  • The six alkaline earth metals - beryllium, magnesium, calcium, strontium, barium, and radium - comprise Group 2 on the periodic table of elements. (encyclopedia.com)
  • These include (in addition to the alkaline earth metals and the alkali metals) the transition metals, halogens, noble gases, lanthanides, and actinides. (encyclopedia.com)
  • Where families are concerned, there are certain observable properties that led chemists in the past to group the alkaline earth metals together. (encyclopedia.com)
  • These properties will be discussed with regard to the alkaline earth metals, but another point should be stressed in relation to the division of elements into families. (encyclopedia.com)
  • In this respect it is more similar to the alkaline-earth metals than to the alkali metals. (everything2.com)
  • The alkaline earth metals provide a good example of group trends in properties in the periodic table, with well-characterized homologous behavior down the group. (princeton.edu)
  • The alkaline earth metals are silver colored, soft metals , which react readily with halogens to form ionic salts , and with water , though not as rapidly as the alkali metals , to form strong alkaline ( basic ) hydroxides . (princeton.edu)
  • All the alkaline earth metals have two electrons in their valence shell, so the energetically preferred state of achieving a filled electron shell is to lose two electrons to form doubly charged positive ions . (princeton.edu)
  • The alkaline earth metals are named after their oxides , the alkaline earths , whose old-fashioned names were beryllia , magnesia , lime , strontia and baryta . (princeton.edu)
  • The most popular precious metals with investors are gold, platinum and silver, and precious metals used in industrial processes include iridium , which is used in specialty alloys and palladium , which is used in electronics and chemical applications. (investopedia.com)
  • Much has yet to be learned regarding the alloys of metals, because a very small difference in the proportions of the metals employed produces a great difference in the quality of the alloy sought to be obtained. (scientificamerican.com)
  • Every person is familiar with regard to the comparative hardness of these two bodies, but very few are acquainted with the comparative hardness of other bodies, especially metals and their alloys, although a scale of hardness has long been adopted among mineralogists. (scientificamerican.com)
  • Kickinger-Lörsch A, Bruckner T, Mahler V. Nickel and cobalt release from metal alloys of tools-a current analysis in Germany. (springer.com)
  • VDM Metals Group (formerly Vereinigte Deutsche Metallwerke) based in Werdohl, Germany, is a manufacturer of corrosion-resistant, heat-resistant and high-temperature nickel alloys, cobalt and zirconium alloys as well as high-alloyed special stainless steels. (wikipedia.org)
  • In the early 1950s, VDM became the world's largest manufacturer and distributor of raw, semi-finished and finished non-ferrous metals and alloys. (wikipedia.org)
  • Metals covered include carbon steel, stainless and special steel, scrap and secondary, ores and alloys, raw materials, minor and precious metals, and base metals with additional coverage of freight news, capital markets, and exchange news and prices. (wikipedia.org)
  • It was found that some brasses were harder than any of the metals composing them, and strange to relate, this hardness is due to the softer metal-the zinc. (scientificamerican.com)
  • The SRB has in the past bought other metals such as aluminium and zinc domestically as a means of supporting local producers. (reuters.com)
  • Silvercorp Metals Inc. (Silvercorp) is a mining company producing silver, lead and zinc metals in concentrates from mines in China. (reuters.com)
  • Some heavy metals, like iron and zinc, are essential nutrients at low concentrations but toxic at high concentrations. (usgs.gov)
  • Zinc-coated metals were first patented in 1837, separately by M. Sorel in France and H. W. Crawford in England. (wikipedia.org)
  • Decorative architectural elements were frequently cast in zinc, since it molded readily, was inexpensive compared to stone, and could be painted to imitate more expensive metals. (wikipedia.org)
  • Among the industrial metals, July platinum climbed to $544.80 an ounce, up $9.50. (marketwatch.com)
  • SINGAPORE, April 30 (Reuters) - Most industrial metals fell on Tuesday, after data showed growth in China's factory activity unexpectedly slowed in April, suggesting the economy is still struggling to regain traction. (cnbc.com)
  • Around 95 of the 118 elements in the periodic table are metals (or are likely to be such). (wikipedia.org)
  • Group I of the Periodic Table is composed of highly reactive metals. (gsu.edu)
  • In the periodic system, metals represent up to 75% of the elements in the principal groups and all the elements in the accessory groups, the lanthanides and the actinides. (springer.com)
  • Also, like the alkali metals , or indeed any other family on the periodic table , not all members of the alkali metal family are created equally in terms of their abundance on Earth or their usefulness to human life. (encyclopedia.com)
  • For instance, metals, which comprise the vast majority of elements on the periodic table, tend to be shiny, hard, and malleable (that is, they can bend without breaking. (encyclopedia.com)
  • As noted, the alkaline earth metal family occupies the second group, or column, in the periodic table. (encyclopedia.com)
  • A group of six highly reactive metal s, group IA of the Periodic Table of the Elements including, in increasing order of atomic weight and reactivity, lithium , sodium , potassium , rubidium , cesium , and francium . (everything2.com)
  • The alkali metals also react with nonmetal s in Groups VA and VIA of the periodic table . (everything2.com)
  • There are more than 90 metals in the periodic table. (eurekalert.org)
  • Coal contains many heavy metals, as it is created through compressed organic matter containing virtually every element in the periodic table - mainly carbon, but also heavy metals. (sourcewatch.org)
  • The prevalence of metal allergy in the general population is high: up to 17% of people are allergic to nickel, and 1-3% to cobalt and chromium. (springer.com)
  • Smaller amounts of tin , nickel , magnesium , and precious metals are also recovered from scrap. (britannica.com)
  • Assessment of nickel and cobalt release from 200 unused hand-held work tools for sale in Denmark - sources of occupational metal contact dermatitis? (springer.com)
  • Many of the heavy metals released in the mining and burning of coal are environmentally and biologically toxic elements, such as lead , mercury , nickel , tin , cadmium , antimony , and arsenic , as well as radio isotopes of thorium and strontium . (sourcewatch.org)
  • Investors can participate in precious metals by purchasing the physical asset , purchasing futures contracts for the particular metal or through the purchase of shares in publicly traded companies engaged in the exploration or production of precious metals. (investopedia.com)
  • A wide variety of commodities are traded in the futures market , including precious metals. (investopedia.com)
  • Futures offer investors a leveraged means of buying or selling precious metals, set at a specific price and time in the future. (investopedia.com)
  • Aside from physical possession of precious metals, investors can trade stocks, futures, options, mutual funds and exchange-traded funds based on precious metal holdings. (investopedia.com)
  • NEW YORK (CBS.MW) -- A fall in the overall U.S. stock market Wednesday helped bring gold futures prices back above $300 an ounce and provided a lift to shares of most metals companies. (marketwatch.com)
  • She has spent the bulk of her years at the company writing the daily Futures Movers and Metals Stocks columns and has been writing the weekly Commodities Corner column since 2005. (marketwatch.com)
  • T wo current and one former precious metals traders at JPMorgan Chase have been charged with manipulating futures markets in what prosecutors described as a massive, multi-year conspiracy run out of the bank. (telegraph.co.uk)
  • Each afternoon Ira Epstein gets you up to speed on what happened in the metals futures markets. (futuresmag.com)
  • Precious metals miner Randgold Resources lost 1.3 percent, retreating with a 2 percent tumble by the spot gold price in Asian trade after heavy losses on U.S. gold futures on technical selling. (nasdaq.com)
  • Cash-Settled Spread and Ratio contracts, including Gold/Silver Ratio, Gold/Platinum Spread and Platinum/Palladium Spread futures, are the newest addition to CME Group's suite of Precious Metals products. (cmegroup.com)
  • A heavy metals panel is a group of tests that measures the quantity of specific potentially toxic metals in the blood, urine or, more rarely, in the hair or other body tissue or fluid. (labtestsonline.org)
  • A laboratory may offer several different groupings of heavy metals panels as well as tests for individual metals. (labtestsonline.org)
  • The term "heavy metals" is loosely defined. (labtestsonline.org)
  • Significant concentrations of any of the heavy metals can be irritating or damaging to the body and can contaminate soil, air, food, and water, persisting indefinitely in the environment. (labtestsonline.org)
  • Because they are a source of potential injury, the term "heavy metals" is frequently used interchangeably with the term "toxic metals. (labtestsonline.org)
  • Heavy metals are present in many industrial wastewaters. (encyclopedia.com)
  • Nearly half of 45 fruit juices tested had elevated levels of heavy metals, which can pose health risks for children and adults, Consumer Reports has found. (medscape.com)
  • The new evaluation was done to see if there's been improvement, to test other juices, and to test for other heavy metals. (medscape.com)
  • Seven of the 21 had enough heavy metals to potentially harm children who drink a half-cup or more a day, and nine of the 21 held risks for kids drinking a cup or more a day. (medscape.com)
  • There is no scientific evidence indicating that the presence of trace levels of heavy metals in juice has caused any negative health outcomes among individuals at any life stage. (medscape.com)
  • What Are the Health Risks From Heavy Metals? (medscape.com)
  • Depending on how much and how long the exposure is, heavy metals can pose risks to children and adults. (medscape.com)
  • Experts worry about accumulated heavy metals not from only juice, but other sources. (medscape.com)
  • plants absorb the heavy metals from contaminated soil and water, CR says. (medscape.com)
  • Among the misconceptions among parents, he says, is that organic juices are lower in heavy metals. (medscape.com)
  • There is no agreed-upon definition of "heavy metals," but heavy metals generally are considered to be those metals with a high density. (usgs.gov)
  • Small amounts of heavy metals can be necessary for health, but too much may cause acute or chronic toxicity (poisoning). (sourcewatch.org)
  • The electric power sector is the largest source of toxic pollutants in the United States, due to coal ash and coal waste , which contain toxins such as heavy metals. (sourcewatch.org)
  • Burning coal produces airborne compounds, known as fly ash and bottom ash (collectively referred to as coal ash ), which can contain large quantities of heavy metals that settle or wash out of the atmosphere into oceans, streams, and land. (sourcewatch.org)
  • As a result, heavy metals such as mercury are concentrated in what the EPA considers "recycled air pollution control residue. (sourcewatch.org)
  • Coal sludge , the liquid coal waste produced by mining activities (also known as slurry), contains heavy metals. (sourcewatch.org)
  • The constant leaching of heavy metals from coal mining and coal plants leads to bioaccumulation in plants and animals, creating the danger of toxicity. (sourcewatch.org)
  • The single most popular precious metal for investment purposes is gold, followed by silver, and there are several options for gaining exposure. (investopedia.com)
  • Publicly traded mining companies offer exposure to precious metals at the producer level, but this category has underperformed other vehicles due to a variety of challenges including high company debt levels, rising labor costs and environmental issues. (investopedia.com)
  • For investors seeking diversified exposure to precious metals mining companies, there are numerous mutual funds offering exposure in varying geographies and markets caps. (investopedia.com)
  • The widest range of investment strategies for precious metals can be found in exchange-traded funds with options including junior and senior producers, gold bullion, and leveraged exposure. (investopedia.com)
  • The signs and symptoms that a person may experience depend upon the type of metal, its form, the quantity, the length of exposure, the type of exposure, the age of the person, and the person's general state of health. (labtestsonline.org)
  • The goal of this project is to identify and quantify the metal content of e-cigarette aerosols generated by a variety of products and designs, to examine the cytoxicity (i.e. toxicity to cells) and genotoxicity (i.e., toxicity to genetic information within cells) of aerosols with metal content, and to examine biomarkers of metal exposure and effects in users. (fda.gov)
  • and (3) to measure biomarkers of metal exposure and effects in e-cigarette users by comparing 75 adults aged 21-40 who use e-cigarettes only, conventional cigarettes only, or no tobacco products, by analyzing metals in oral cavity cells and metal concentrations in saliva, blood, and urine. (fda.gov)
  • For others, exposure to metals to which they are sensitive may cause the development of hidden inflammation, which can become chronic if not addressed. (prweb.com)
  • Common and uncommon metal allergens and sources of exposure are then reviewed in depth, and detailed sections are devoted to hypersensitivity to metal implants (which may be associated with device failure and/or dermatitis), metal allergy in select patient populations, and less frequently encountered manifestations of metal allergy. (springer.com)
  • Designed to provide you with another way to manage your precious metals price exposure. (cmegroup.com)
  • Magnesium, aluminum and titanium are light metals of significant commercial importance. (wikipedia.org)
  • Reinforced light metals, therefore, offer a promising approach due to their high strength to weight ratio. (sae.org)
  • The potential of reinforced light metals is shown by means of compression samples cast in laboratory scale. (sae.org)
  • Reinforced Light Metals for Automotive Applications," SAE Technical Paper 2007-01-1228, 2007, https://doi.org/10.4271/2007-01-1228 . (sae.org)
  • Several metals, including lithium, sodium and magnesium, can burn easily, and from time to time large amounts catch fire in factories. (popsci.com)
  • Alkali metals reacting with water, comparing lithium Li, sodium Na and potassium K as they react with water in the presence of phenolphthalein. (youtube.com)
  • Common uses of the alkali metals include the use of lithium , sodium , and potassium as reducing agent s and in heat-transfer coolant . (everything2.com)
  • All of the alkali metals react with oxygen -- lithium and sodium to form monoxide s and the heavier alkali metals to form peroxide s. (everything2.com)
  • It's less obvious that other elements-beryllium, sodium, and lithium, for example-are metals too. (usgs.gov)
  • Sainio EL, Jolanki R, Hakala E, Kanerva L. Metals and arsenic in eye shadows. (springer.com)
  • But in the new report, every juice contained at least one of the four metals tested, and 47%, or 21, had concerning levels of cadmium, inorganic arsenic, and/or lead. (medscape.com)
  • The patient's original hip replacement had been done in 2006 with an ASR (articular surface replacement) hip prosthesis (ASR XL Acetabular Hip System [DePuy Orthopaedics, Warsaw, Ind, USA]), comprising a large-diameter metal (cobalt and chromium) cup with a large modular metal head on a titanium Corail stem ( Box ). (mja.com.au)
  • A number of metals and elements in electronic cigarette (e-cigarette) aerosol - such as lead, chromium, iron, strontium, and aluminum - are known carcinogens, respiratory toxicants/irritants, reproductive and developmental toxicants, or have other human health effects. (fda.gov)
  • Chromium(VI) release from leather and metals can be detected with a diphenylcarbazide spot test. (springer.com)
  • In chemistry, metals that oxidize or corrode easily are referred to as 'base metals. (investopedia.com)
  • Because of their abundance, prices for base metals are far below those of both precious and rare-earth metals, and prices respond to changes in demand for the products for which the metals are used. (investopedia.com)
  • Investors and traders can participate in the base metals market in a number of ways. (investopedia.com)
  • Base metals may not glitter like gold, but they can still guide an investor to a conclusion about overall economic health, check out Using Base Metals As An Economic Indicator . (investopedia.com)
  • Because of their scarcity, precious metals are valuable - much more so than the base metals. (investopedia.com)
  • Like base metals, a wide range of investment vehicles are available to those interested in the precious metals markets. (investopedia.com)
  • Although most elemental metals have higher densities than most nonmetals , [4] there is a wide variation in their densities, lithium being the least dense (0.534 g/cm 3 ) and osmium (22.59 g/cm 3 ) the most dense. (wikipedia.org)
  • Furthermore, producers are looking for alternative methods and metals to produce batteries with in order to prevent overdependence on lithium and cobalt. (yahoo.com)
  • Lithium is the lightest metal lic element. (everything2.com)
  • The alkali metals have low melting point s, ranging from a high of 181° C for lithium to a low of 28° C for cesium , which has the second lowest melting point of all the metal s. (everything2.com)
  • Alloy s of alkali metals exist that melt as low as -78° C . Cesium is the most volatile of the alkali metals, with a boiling point of 671° C . The boiling points of the alkali metals increase in regular fashion as the atomic number s decrease, the highest, 1,342° C , being that of lithium . (everything2.com)
  • The alkali metals are the least electronegative of the elements, with electronegativities ranging from 0.7 ( cesium ) to 1.0 ( lithium ). (everything2.com)
  • Of the alkali metals, only lithium reacts with nitrogen . (everything2.com)
  • Lithium also forms a relatively stable hydride , whereas the other alkali metals form hydrides that can be more readily dissociated. (everything2.com)
  • Precious metals are naturally occurring metallic chemical elements that have a high luster and melting point, are softer and more ductile than other metals and are less reactive than most elements. (investopedia.com)
  • They are the most reactive metal s, and always occur in nature in combination with other elements. (everything2.com)
  • The alkali metals are extremely reactive and combine readily with most of the substances found in the atmosphere . (everything2.com)
  • When identifying sources of metals, consider both non-point and point sources. (epa.gov)
  • The lack of available money to invest in finding new sources of metals, coupled with major miners focusing on debt reduction has caused a plunge in investment. (telegraph.co.uk)
  • Impairments result when metals are biologically available at toxic concentrations affecting the survival, reproduction and behavior of aquatic organisms. (epa.gov)
  • Although so-called metal test series with rarely sensitizing metals for patch testing exist, most of these metals have not been systematically evaluated regarding the compounds, the concentrations, and the vehicles that are used for patch testing. (springer.com)
  • In this chapter, we give an overview of metal compounds, concentrations, and vehicles (if indicated) as reported in the literature. (springer.com)
  • badges: CoalSwarm}} Heavy metal refers to any metallic chemical element that has a high density and is toxic or poisonous at low concentrations. (sourcewatch.org)
  • Precious metal includes silver (Ag), gold (Au), platinum (Pt) and palladium (Pd). (investopedia.com)
  • In particular, the arrival of two new ETFs makes it easier than ever to invest in platinum and palladium, two precious metals with a wider array of industrial uses than gold and silver. (kiplinger.com)
  • Palladium led declines for metals, after the head of the European Central Bank expressed concern over the rise in the euro. (yahoo.com)
  • LBMA Trade Data ( formerly LBMA-i Precious Metals Data ) provides a daily snapshot of the size of the LBMA membership's share of the Loco London and Loco Zurich OTC market for precious metals - covering Gold, Silver, Platinum and Palladium. (nasdaq.com)
  • These materials combine the hardness of metal with the high surface area of carbon to form metal carbides that are stronger than steel and can withstand temperatures to 1,400 degrees Celsius. (zdnet.com)
  • The other alkali metals do not form stable carbides, although they do react with the graphite form of carbon to give intercalation compounds . (everything2.com)
  • Organic mercury and tributyl tins are special forms of metals that are beyond the scope of this module. (epa.gov)
  • This chapter provides an overview of the current knowledge on metals in tools and the workplace, with regard to metal allergy. (springer.com)
  • The alkali metals all react vigorously, and often violently, with water , releasing hydrogen and forming strong caustic solutions. (everything2.com)
  • Aluminum Substrate: High-performance painted metal roofing product, carefully tensioned leveled for superior flatness. (yudu.com)
  • CNC machines and aluminum are compatible because the metal is pliable, so it chips easily. (sme.org)
  • Similar to other metals, the physical properties that make aluminum suitable for machining can also cause some less than desirable qualities. (sme.org)
  • Learn about topics such as How to Remove Rust from Metal , How to Clean Oxidized Aluminum , How to Clean Metal , and more with our helpful step-by-step instructions with photos and videos. (wikihow.com)
  • Toronto, Ontario--(Newsfile Corp. - December 1, 2020) - C3 Metals Inc. (TSXV: CCCM) is pleased to advise the appointment of Fernando Pickmann as a Director of the Company effective December 1st, 2020. (yahoo.com)
  • Some metals are toxic in minute amounts. (epa.gov)
  • In the liquid state, alkali metals can be ignited in air with ease, generating large amounts of heat and a dense choking smoke of the oxide. (everything2.com)
  • This volume has been compiled in response to the ongoing revolution in our understanding of metal contact allergy, and the ensuing challenge this has created for clinicians and others to synthesize large amounts of sometimes contradictory data. (springer.com)
  • VANCOUVER , June 1, 2017 /CNW/ - AZARGA METALS CORP. (' Azarga Metals ' or the ' Company ') (TSX-V:AZR) reports that the Company has reached certain settlement agreements with the minority shareholders of the Company's 60% owned subsidiary, Azarga Metals Limited ('Azarga BVI') to accept common shares of the Company in settlement of amounts owing. (newswire.ca)
  • The solid or liquid state of metals largely originates in the capacity of the metal atoms involved to readily lose their outer shell electrons. (wikipedia.org)
  • Broadly, the forces holding an individual atom's outer shell electrons in place are weaker than the attractive forces on the same electrons arising from interactions between the atoms in the solid or liquid metal. (wikipedia.org)
  • The electrons involved become delocalised and the atomic structure of a metal can effectively be visualised as a collection of atoms embedded in a cloud of relatively mobile electrons. (wikipedia.org)
  • [4] The strength of metallic bonds for different elemental metals reaches a maximum around the center of the transition metal series, as these elements have large numbers of delocalized electrons. (wikipedia.org)
  • Juan Carlos Artigas, investment research manager at the World Gold Council, a gold-mining trade group headquartered in London, argues that a dearth of new gold discoveries, buying by central banks, and demand from China and India suggest that the metal has more room to run. (kiplinger.com)
  • We stand at a time of unprecedented change, and the mining and metals industry is not immune to that. (ey.com)
  • In response, mining and metals companies will need to automate aspects of their tax compliance functions to meet the increasing demands for data disclosure. (ey.com)
  • For mining and metals companies around the world, digital is impacting all aspects of their business. (ey.com)
  • SLV ) thus far distinguishes this correction from prior selloffs where mining equities had tended to fall farther and faster than prices for the underlying metal. (aol.com)
  • Glassdoor has employee reviews from 5,000 Mining & Metals employees. (glassdoor.com)
  • Since a brief trough in February, metal prices have staged a strong rally, taking prices up by 22pc-50pc," notes Daniel Kang, HSBC's head of mining in the Asia Pacific Region. (telegraph.co.uk)
  • Valuations for metals are starting to look pretty full right now but this is not the case with mining shares, which appear to still offer good value. (telegraph.co.uk)
  • Metals and Controls Corp. (cdc.gov)
  • Also known as: M & C, Texas Instruments, M&C Nuclear, Metals and Controls Nuclear Corp. (cdc.gov)
  • There is one open/active SEC petition from Metals and Controls Corp.( Petition 236 ). (cdc.gov)
  • All Atomic Weapons Employees who worked at Metals and Controls Corp. in Attleboro, MA, from January 1, 1952 to December 31, 1967, for a number of work days aggregating at least 250 work days, occurring either solely under this employment, or in combination with work days within the parameters established for one or more other classes of employees included in the SEC. (cdc.gov)
  • turmalina metals corp. (prnewswire.com)
  • Salts of abundant and relatively nontoxic metals are discussed in the Ionic Strength module. (epa.gov)
  • The rate and extent of this process is dependent upon the temperature and chemical characteristics of the wastewater, such as the concentration of metal initially present and other ionic species present, which can compete with or form soluble complexes with the target metal species. (encyclopedia.com)
  • Metals also form ionic bonds, the tightest form of chemical bonding. (encyclopedia.com)
  • The heavy metal content of coal varies by coal seam and geographic region. (sourcewatch.org)
  • ( Kitco News ) - The outlook for precious metals in the first quarter of 2016 is mixed as a number of macro forces converge. (forbes.com)
  • Drexel Metals design pressures, wind uplifts and test reports are for specific deck attachments, material gauges, clip spacing and panel widths. (yudu.com)
  • [1] Many elements and compounds that are not normally classified as metals become metallic under high pressures. (wikipedia.org)
  • If you ever see a large industrial metal fire (yes, they happen) on the news, you may be surprised at what the firefighters do to extinguish it: nothing. (popsci.com)
  • We write about metals market news. (forbes.com)
  • In other metals news, May silver rose 4.5 cents to $4.45 an ounce. (marketwatch.com)
  • news_18806_7_en. (eurekalert.org)
  • Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. (springer.com)
  • Protection of Metals and Physical Chemistry of Surfaces is a peer reviewed journal. (springer.com)
  • The Chemistry of Transition Metals Award recognises outstanding research in any aspect of the chemistry of d- and f-block elements. (rsc.org)
  • The RSC Chemistry of Transition Metals Award was established in 1971. (rsc.org)
  • With infinite combinations of metal elements, atomicity and composition, this method will open up a new field in chemistry on a one-nanometer scale. (eurekalert.org)
  • When most metal salts dissolved in solution are added in a pressurized oven and heated 70 to 200 degrees centigrade or warmer for four to 16 hours, uniform metal crystals form at the hydroxyl sites. (zdnet.com)
  • This method employs a dendrimer template[2] that serves as a tiny "scaffold" to enable controlled accumulation of metal salts. (eurekalert.org)
  • Cobalt toxicity - an emerging clinical problem in patients with metal-on-metal hip prostheses? (mja.com.au)
  • We report two Australian patients with possible cobalt toxicity related to metal-on-metal total hip replacements. (mja.com.au)
  • The stockpiler paid around 1,400-1,450 yuan per one percent of metal contained in the 2,700 tonnes of molybdenum oxide, and around $15.70/lb for cobalt. (reuters.com)
  • The metals display catalytic, electrical and optical that would not be present in larger or odd-sized crystals. (zdnet.com)
  • Both metals are used in the catalytic converters found in cars, so strong auto sales would be bullish. (kiplinger.com)
  • Information on practically all ferrous and nonferrous metals including powder metals is presented in tabular form for easy review and comparison between different materials. (worldcat.org)
  • Transactions of The Indian Institute of Metals is devoted to the publication of selected reviews on contemporary topics and original research articles that contribute to the advancement of ferrous and non-ferrous process metallurgy, materials engineering, physical, chemical and mechanical metallurgy, welding science and technology, surface engineering and characterisation, materials development, thermodynamics and kinetics, materials modelling and to other allied branches of metallurgy and materials engineering. (springer.com)
  • Fastmarkets MB, previously known as Metal Bulletin, is a specialist international publisher and information provider for the global steel, non-ferrous and scrap metals markets. (wikipedia.org)
  • The publication provided price and other information for the steel and non-ferrous metals markets and was published twice a week. (wikipedia.org)
  • Human activities redistribute and concentrate metals in areas that are not naturally metals-enriched. (epa.gov)
  • Metal deactivators , or metal deactivating agents ( MDA ) are fuel additives and oil additives used to stabilize fluids by deactivating (usually by sequestering ) metal ions , mostly introduced by the action of naturally occurring acids in the fuel and acids generated in lubricants by oxidative processes with the metallic parts of the systems. (wikipedia.org)
  • Because metals may have an irritant potential and some metals are even toxic to the human organism, it is mandatory that the utmost reservation be exercised with the testing of nonstandardized metal compounds. (springer.com)
  • The alkali metals themselves react with many organic compounds, particularly those containing an active hydrogen atom. (everything2.com)
  • Rain falling on coal storage piles and ash piles can leach out these heavy metal compounds into ground water or lakes and streams, contaminating drinking water sources. (sourcewatch.org)
  • While residential construction in the U.S. has pulled back from its peak, worldwide non-residential construction notably is expected to strengthen,' according to the steel and metals company's outlook. (marketwatch.com)
  • 0207 2412430 (also plastics and stainless steel) Forward Metals Ltd., Saxon Way, Chelmsley Wood, Birmingham, B37 5AY tel- 0121 779 4888 Dore Metal Services, 46 Imex Business Park, Flaxley Rd, Birmingham B33 9AL. (ucl.ac.uk)
  • A pioneering manufacturing process that can turn titanium, stainless steel and many other metals into a new breed of engineering components could have a big impact across industry. (zdnet.com)
  • Metal sensitivity is not the same as metal toxicity, which is due to high levels of metals in the body. (prweb.com)
  • [3] Heavy metal toxicity can result in damaged or reduced mental and central nervous function, lower energy levels, and damage to blood composition, lungs, kidneys, liver, and other vital organs. (sourcewatch.org)
  • Sheets of metal thicker than a few micrometres appear opaque, but gold leaf transmits green light. (wikipedia.org)
  • For decades, gold bugs have argued the bullish case for their favorite metal. (kiplinger.com)
  • The price of gold has climbed steadily for the past nine years, from $277 an ounce in 2001 to a record high (not adjusted for inflation) of $1,213 in December 2009 as investors piled into the yellow metal because of its reputation as a safe haven and as a hedge against a falling dollar. (kiplinger.com)
  • Despite steady gains in the price of gold, the yellow metal still has many supporters. (kiplinger.com)
  • They will complement, as well as expand, the Exchange's precious metals product slate and allow market participants in the precious metals industry, including the OTC market and ETF's, to trade referenced gold/silver ratios in a much more efficient manner. (cmegroup.com)
  • Alkali metals tend to lose one electron and form ions with a single positive charge. (gsu.edu)
  • We find that the metals of most concern tend to be those with three characteristics: they are available largely or entirely as byproducts, they are used in small quantities for highly specialized applications, and they possess no effective substitutes. (pnas.org)
  • The metals of most concern tend to be those available largely or entirely as byproducts, used in small quantities for highly specialized applications, and possessing no effective substitutes. (pnas.org)
  • pipeclay (or silica) triangles are intended for use with porcelain crucibles, metal crucibles tend to be larger and fit the triangles badly. (rsc.org)
  • Metals tend to be shiny, they make good conductors, and they're malleable and ductile. (usgs.gov)
  • Most common non metal lic substances such as the halogens , halogen acids, sulfur , and phosphorus react with the alkali metals. (everything2.com)
  • LBMA Trade Data is a transparency service for the precious metals market delivered by Nasdaq. (nasdaq.com)
  • He focuses on relevant economic and geopolitical topics that affect the precious metals and base metal markets. (futuresmag.com)
  • However, the deterioration of the minerals and metals markets continued, depressing global trade. (usitc.gov)
  • Additionally, China's demand-and-supply dynamics in the minerals and metals markets continue to exert a strong effect on the U.S. trade balance through global market prices. (usitc.gov)
  • Two attorneys explain why a strong sales contract is a necessity in the metals industry. (sme.org)
  • Companies in the same industry as Indaco Metals, ranked by bonus. (payscale.com)
  • As it relates to silver and the platinum group metals the influence of global deflationary forces will continue to cap gains. (forbes.com)
  • In colder climates, snow disposal sites may act as seasonal sources for metals associated with atmospheric deposition, road use and snow management. (epa.gov)
  • In general, these metals can be complexed to insoluble species by adding sulfide, hydroxide, and carbonate ions to a solution. (encyclopedia.com)
  • The surface hydroxyl groups serve to reduce metal ions such as Ag(I), Pt(IV), Pd(II), and Se(IV) to corresponding nanocrystalline metals at 160-200°C in air without adding any reducing agents. (zdnet.com)
  • The original crystalline structure of the CNXL is maintained in the temperature range and the hydroxyl groups reduce metal ions to metal nanocrystals on the CNXL surface. (zdnet.com)
  • Various metal ions can be taken up into the dendrimer structure with various combinations. (eurekalert.org)
  • Multimetallic clusters are obtained by chemical reduction of these metal ions on the template. (eurekalert.org)
  • All members of the alkaline earth metal family have a valence electron configuration of s 2 . (encyclopedia.com)
  • Demand for cellphones and flat-screen TVs is depleting global supplies of a host of uncommon metals. (newscientist.com)
  • Allergies are not uncommon and repeated long-term contact with some metals may even cause cancer. (sourcewatch.org)
  • Equally, some materials regarded as metals can become nonmetals. (wikipedia.org)
  • Even dry sand or salt, standard materials for putting out metal fires, can wreak havoc. (popsci.com)
  • The buying came after the state body in 2012 added more metals, including some minor metals and rare earths, in its programme of stockpiling strategic materials. (reuters.com)
  • Transactions of the Indian Institute of Metals is an International Journal publishing high-quality reviews and current research papers on various apects of metallurgy and materials engineering. (springer.com)
  • Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. (springer.com)
  • Understand that smelting metal in a microwave is a non-traditional use of all materials involved in this process. (ehow.com)
  • Researchers in Japan have found a way to create innovative materials by blending metals with precision control. (eurekalert.org)
  • Multimetallic clusters -- typically composed of three or more metals -- are garnering attention as they exhibit properties that cannot be attained by single-metal materials. (eurekalert.org)
  • If a variety of metal elements are freely blended, it is expected that as-yet-unknown substances are discovered and highly-functional materials are developed. (eurekalert.org)
  • Metals Division, Office of Materials and Machinery, Manufacturing and Services Unit, International Trade Administration, U.S. Department of Commerce. (usitc.gov)
  • Metals are typically malleable (they can be hammered into thin sheets) or ductile (can be drawn into wires). (wikipedia.org)
  • They are generally designed to precipitate trace metals to their solubility limits and obtain additional removal by coprecipitation and adsorption during the precipitation reaction. (encyclopedia.com)
  • Metals, as chemical elements, comprise 25% of the Earth's crust and are present in many aspects of modern life. (wikipedia.org)
  • Before going further, below are two images showing some precious metal crystals obtained with this process. (zdnet.com)
  • Through investing in some basic tools and equipment, you can create a homemade rig capable of melting most soft metals in the comfort of your home. (ehow.com)
  • NEW YORK (MarketWatch) - Commercial Metals Co. CMC, -1.37% reported second-quarter net income Tuesday of $80.1 million, or $1.29 a share, compared with $56.6 million, or 91 cents a share in the year-earlier period. (marketwatch.com)
  • With small metal droplets or thin films of an alkali metal, the reaction can be explosive. (everything2.com)
  • The checklist below will help you identify key data and information useful for determining whether to include metals among your candidate causes. (epa.gov)
  • As a mechanical engineer, it is imperative that you understand the properties of different metals. (sme.org)
  • So far, no one had reported the multimetallic clusters blended with more than four metal elements so far because of unfavorable separation of different metals. (eurekalert.org)
  • One idea to overcome this difficulty is miniaturization of cluster sizes to one-nanometer scale, which forces the different metals to be blended in a small space. (eurekalert.org)
  • After precise uptake of the different metals into the dendrimer, multimetallic clusters are obtained by chemical reduction. (eurekalert.org)
  • In contrast, a conventional method without the dendrimer yields enlargement of cluster sizes and separation of different metals. (eurekalert.org)