However, if the steel is cooled quickly the carbon atoms will not have time to precipitate.

However, very small amounts of steel, ( an alloy of iron and around 1 % carbon ), was always a byproduct of the bloomery process.

However, inhalation of coal dust or soot ( carbon black ) in large quantities can be dangerous, irritating lung tissues and causing the congestive lung disease coalworker's pneumoconiosis.

" However, a recent paper by Wolfgang Knorr indicates that the fraction of absorbed by carbon sinks has not changed since 1850 .< ref >

However, carbon dioxide has an advantage in this respect as it kills organisms through hypercarbia and depending on concentration hypoxia and, requiring concentrations of above 35 %, or so.

However, they can be managed in ways that enhance their biodiversity protection functions and they are important providers of ecosystem services such as maintaining nutrient capital, protecting watersheds and soil structure as well as storing carbon.

However, it can also be pathologically altered in, e. g., carbon monoxide poisoning.

However, the atmosphere was found to be in a stable condition close to its chemical equilibrium, with very little oxygen, methane, or hydrogen, but with an overwhelming abundance of carbon dioxide.

However, Bada noted that in current models of early Earth conditions, carbon dioxide and nitrogen ( N < sub > 2 </ sub >) create nitrites, which destroy amino acids as fast as they form.

However, it is likely that most of the atmospheric carbon was CO < sub > 2 </ sub > with perhaps some CO and the nitrogen mostly N < sub > 2 </ sub >.

However, not all organisms that use light as a source of energy carry out photosynthesis, since photoheterotrophs use organic compounds, rather than carbon dioxide, as a source of carbon.

However, there are some types of bacteria that carry out anoxygenic photosynthesis, which consumes carbon dioxide but does not release oxygen.

However, local eruptions of volcanoes or other events that give off large amounts of carbon dioxide can reduce local concentrations of carbon-14 and give inaccurate dates.

However, its final English name, suggested in 1831, reflects the more physically similar elements carbon and boron.

However, having four bonding electrons gives it, like carbon, many opportunities to combine with other elements or compounds under the right circumstances.

However, recent concepts for a space elevator are notable for their plans to use carbon nanotube or boron nitride nanotube based materials as the tensile element in the tether design.

However, nuclear submarines run " open loop "— extracting oxygen from seawater, and typically dumping carbon dioxide overboard, although they recycle existing oxygen.

However, he was one of the first scientists to recognize that the oxygen, nitrogen and carbon dioxide in the Earth's atmosphere result from biological processes.

However, the representatives of the then 192 member countries of the United Nations gathered in December 2009 for the Copenhagen Conference failed to reach a binding agreement to reduce carbon emissions because of divisions between regional areas.

However footprints of what looks like ancient sandals have been carbon dated to around the time 500, 000 BC.

However, this process is very slow, taking tens of thousands of years to convert a significant amount of helium to carbon in stars, and therefore it made a negligible contribution in the minutes following the Big Bang.

However, in his laboratory notebook under the date 6 September 1803 there appears a list in which he sets out the relative weights of the atoms of a number of elements, derived from analysis of water, ammonia, carbon dioxide, etc.

However, Zola dies of carbon monoxide poisoning due to a faulty stove the night before the public ceremony in which Dreyfus is exonerated.

However, Verhoeven and Pendray discovered that in samples of true Damascus steel, the Damascene pattern could be recovered by aging at a moderate temperature.

However, with modern steel strings, bassists can play with clear tone in higher positions on the low E and A strings, particularly when modern lighter-gauge, lower-tension steel strings are used.

However, steel was difficult to produce with the methods available, and alloys that were easier to make, such as wrought iron, were more common in lower-priced goods.

However, further description of how this flint device operated was not made until a Chinese text of 1606 AD revealed that a weight drive ( common in medieval clockworks ) had been used to work the ' steel wheel '.

However, even heavy-draw longbows have trouble penetrating well-made steel plate armour, which was used increasingly after 1350.

However, damaged or retired containers may also be recycled in the form of shipping container architecture, or the steel content salvaged.

However, Schluter didn't just copy the Leedy design, he introduced several significant improvements: making the bars from aluminum instead of steel for a more " mellow " basic tone ; adjustments to the dimensions and tuning of the bars to eliminate the dissonant harmonics in the Leedy design ( further mellowing the tone ); and the introduction of a damper bar controlled by a foot pedal, enabling it to be played with more expression.

However, carbonated concrete only becomes a durability problem when there is also sufficient moisture and oxygen to cause electro-potential corrosion of the reinforcing steel.

However, temperatures are limited by ability of the steel, nickel, ceramic, or other materials that make up the engine to withstand high temperatures and stresses.

However, there is no sound evidence that Edward ever wore black armour, although Harvey ( without citing a source ) refers to " some rather shadowy evidence that he was described in French as clad at the battle of Crecy " en armure noire en fer bruni "-in black armour of burnished steel ".

However, case weight ( mass ) affects how much ammunition a soldier can carry, so the lighter steel cases do have a military advantage ; conversely, steel is more susceptible to contamination and damage so all such cases are varnished or otherwise sealed against the elements but that seal is relatively fragile and such ammunition must be handled more carefully from the time of manufacture until use.

However, a study of state records further revealed that Sommerlath, in 1938, through the aryanization policies in effect in Germany at the time, became the owner of a steel factory that " produced components for the German war effort, including parts for Panzers, as well as gas masks ," according to the Scotsman ( 20 July 2002 ).

However, even with the replacement steel deck and the addition of two cantilever lanes, the new bridge weighs only 25 tonnes more than the original.

However, Liege is the last city of Wallonia to still have a functioning steel industry.

However, aforementioned usage means that cheap handcuffs are available in situations where steel ones would normally lay unused for long times.

However electrically-heated stainless steel shell boilers are allowed under the European " Pressure Equipment Directive " for production of steam for sterilizers and disinfectors.

However, consideration should also be given to the costs incurred by in removing a ship from the water, for example, to repair a corroded hull or to replacing a steel pipeline or tank because their structural integrity has been compromised by corrosion.

However, steel shortages limited the amount of raw materials that Nash could get, so Mason turned the compact, now designated the Rambler, into a two-door sedan with a convertible top and the cars were equipped with many standard features that were typically options, to maximize profits for the company.

However, heating in localized areas with such low temperatures may be difficult with larger items, like an axe or a splitting maul, because the steel may lose too much heat before it can conduct to the edge.

However, a sword tempered in this way can usually be resharpened many times, and, although the hardness will decrease with each sharpening, the reduction in hardness will usually not be noticeable until a large amount of steel has been removed.