Trace impurities of various other elements can have a significant effect on the quality of the resulting steel.

Trace impurities of the starting materials with oxygen or sulfur and their compounds can contribute to the oxidation of phosphorus ( III )-to phosphorus ( V ) compounds or lead to catalytically inactive metal oxides and-sulfides.

Trace impurities substitutionally replacing carbon atoms in a diamond's crystal lattice, and in some cases structural defects, are responsible for the wide range of colors seen in diamond.

Trace amounts of other elements such as iron, titanium, chromium, copper or magnesium can give corundum blue, yellow, pink, purple, orange or greenish color.

Trace metals include iron, magnesium, lithium, zinc, copper, chromium, nickel, cobalt, vanadium, arsenic, molybdenum, manganese, selenium and others.

Trace fossils are the remains of trackways, burrows, bioerosion, eggs and eggshells, nests, droppings and other types of impressions.

Trace decay theory explains memories that are stored in both short term and long term memory system.

Trace amounts of lithium are present in all organisms.

Trace amounts of neptunium are found naturally as decay products from transmutation reactions in uranium ores.

Typically third party software packages such as IBM's TPF Tool Kit or Step by Step Trace from Bedford Associates or CMSTPF, TPF / GI, zTPF / GI from TPF Software Inc. are employed to aid in the tracing and tracking of errant TPF code.

Trace amounts of these six elements form in some uranium-rich rock, and small amounts are produced during atmospheric tests of atomic weapons.

Trace radionuclides are those that occur in tiny amounts in nature either due to inherent rarity, or to half-lives that are significantly shorter than the age of the Earth.

Trace radioisotopes are therefore present only because they are continually produced on Earth by natural processes.

Trace fossils that are morphologically almost identical to the burrows ( Treptichnus pedum ) officially mark the start of the Cambrian period, suggesting that priapulids, or at least close anatomical relatives, evolved around this time.

Trace fossils are abundant.

The Buffalo Trace Council has operated four camps throughout its existence, three of which are still in existence.

The Elementary Schools are: Carmel Clay Elementary, Cherry Tree Elementary, College Wood Elementary, Forest Dale Elementary, Mohawk Trails Elementary, Orchard Park Elementary, Prairie Trace Elementary, Smoky Row Elementary, Towne Meadow Elementary, West Clay Elementary and Woodbrook Elementary.

When walking on the Bibbulmun Track Walkers are encouraged to follow the 7 Leave no Trace Principles which are:

Artists who have played in the past are: Confederate Railroad, Lonestar, Travis Tritt, Sara Evans, Trace Adkins and more.

Harrison Bay State Park, the Hamilton County Landfill, Bear Trace Golf Course, a course designed by Jack Nicklaus, and Skull Island, a recreational area owned by TVA, are all located in Harrison.

Others are: Skyline Drive in Virginia ; the Natchez Trace Parkway in Mississippi, Alabama, and Tennessee ; and the Colonial Parkway in eastern Virginia's Historic Triangle area.

Trace class operators are essentially the same as nuclear operators, though many authors reserve the term " trace class operator " for the special case of nuclear operators on Hilbert spaces, and reserve nuclear (= trace class ) operators for more general Banach spaces.

It remained a mystery for 25 years whether the character had one as well, until 1997's " Columbo: A Trace of Murder ", whereupon asking another character to revisit the crime scene with him he jokes: " You know, three eyes are better than one.

A Leave No Trace Master Educator Course is typically five days in length and designed for people who are actively teaching others outdoor skills or providing recreation information to the public.

The remaining days are spent in the field on a short backcountry trip learning and practicing the principles of Leave No Trace.

Currently, there are over 4000 + Leave No Trace Master Educators worldwide representing dozens of countries and all 50 states.

Trace transuranics ( another indicator of the use of reprocessed material ) have been reported to be present in some US tank armour.

White Cloud, a town of perhaps 200 persons and a variety of businesses, was located about where the present Wabash Trace Nature Trail crosses the Nishnabotna River three miles southeast of Malvern.

Trace amounts of water would be continuously produced by high-energy solar protons impinging oxide minerals present at the surface of the asteroid.

Trace metals are metals in extremely small quantities that are present in animal and plant cells and tissue.

Trace gases present in breath at levels lower than a part per million are ammonia, acetone, isoprene.

For example, they are present in a lake in the neighborhood of Hammock Trace Preserve in Melbourne, FL.

Trace elements of these metals and salts from animal manure present risks to human health and ecosystems.

An all-star version of " America the Beautiful " performed by country singers Trace Adkins, Billy Dean, Vince Gill, Carolyn Dawn Johnson, Toby Keith, Brenda Lee, Lonestar, Martina McBride, Jamie O ' Neal, Kenny Rogers and Keith Urban reached number 58 in July 2001.

This feature was developed and built with assistance from Trace Research and Development Centre at University of Wisconsin-Madison and Gallaudet University.

Trace flavorings may include nutmeg and a wide variety of ingredients, but the base flavorings that most people identify with a cola taste remain vanilla and cinnamon.

The services the lab conducts include Chemistry, Combined DNA Index System ( CODIS ), Computer Analysis and Response, DNA Analysis, Evidence Response, Explosives, Firearms and Tool marks, Forensic Audio, Forensic Video, Image Analysis, Forensic Science Research, Forensic Science Training, Hazardous Materials Response, Investigative and Prospective Graphics, Latent Prints, Materials Analysis, Questioned Documents, Racketeering Records, Special Photographic Analysis, Structural Design, and Trace Evidence.

This set up stayed until the Counterparts tour, where he switched to Trace Elliot Quatra 4VR amplifiers, GP12 SMX preamps, with two single 18 speaker cabs and two 410 speaker cabs.

From there it is split between a Trace Elliot Quadravalve all-tube power amplifier and a SansAmp RBI rackmountable preamp.

Trace fossils such as tracks and burrows found in the Tonian era indicate the presence of triploblastic worms, like metazoans, roughly as large ( about 5 mm wide ) and complex as earthworms.

Then he followed that up by hosting the CMT Awards in June and performed " Cowboy "," Bawitdaba " and " Good Ol Boys " with Hank Williams Jr, Trace Adkins, Martina McBride, Kellie Pickler, Randy Houser, Zac Brown and Jamey Johnson.

Kid Rock will perform alongside Lynyrd Skynyrd and Trace Adkins at the 2012 Republican National Convention in Tampa Florida.

* 1809 – Along the Natchez Trace in Tennessee, explorer Meriwether Lewis dies under mysterious circumstances at an inn called Grinder's Stand.

Twenty-nine Archaic sites have been identified, mostly in south Trinidad and Tobago ; this includes the 7, 000-year-old Banwari Trace site which is the oldest discovered human settlement in the eastern Caribbean.

* October 11 – Along the Natchez Trace in Tennessee, explorer Meriwether Lewis dies under mysterious circumstances at an inn called Grinder's Stand.

Trace deposits have been found as far northeast as Banff National Park in Alberta, and as far southeast as eastern Oregon.