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, carbon steel woks tend to be more difficult to season than those made of cast-iron (' seasoning ', or carbonizing the cooking surface of a wok, is required to prevent foods from sticking, as well as removing metallic tastes and odors ).

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, the use of blocking system calls in user threads ( as opposed to kernel threads ) or fibers can be problematic.

However, because linen fibers have a very low elasticity, the fabric will eventually break if it is folded and ironed at the same place repeatedly.

However, an increasing percentage of the world ’ s newsprint is made with recycled fibers.

However, they are relatively expensive when compared to similar fibers, such as glass fibers or plastic fibers.

However, dispersion also has an effect in many other circumstances: for example, GVD causes pulses to spread in optical fibers, degrading signals over long distances ; also, a cancellation between group-velocity dispersion and nonlinear effects leads to soliton waves.

However, during development many of the fibers are innervated by multiple axons.

However, it is not clear if this vasodilation is mediated by specific vasodilator nerve fibers or if neuro-humoral effects are involved that are associated with the sympathetic cholinergic activation of sweat glands ( Rowell.

However, inhaled A1AT may not reach the elastin fibers in the lung where elastase injury actually occurs.

However some fibers also show ipsilateral arrangement ( i. e. they run parallel on the same side without decussating.

However, in the dorsal, non-visual section, of the claustrum, the fibers ran consistently in long lengths along the dorsal-ventral direction.

However, the cotton wore out quickly, so de Mestral turned to synthetic fibers.

However, Golgi tendon organs differ from nuclear chain and nuclear bag fibers in that they are considered in series rather than in parallel to the muscle fibers.

However, the continuity of this connection decreases with age to a point that in the elderly there are few, if any, connecting fibers.

However, a translational gauge symmetry may be introduced thus: Instead of seeing tetrads as fundamental, we introduce a fundamental R < sup > 4 </ sup > translational gauge symmetry instead ( which acts upon the internal Minkowski space fibers affinely so that this fiber is once again made local ) with a connection B and a " coordinate field " x taking on values in the Minkowski space fiber.

However, there is also a third type of AVNRT that utilizes the slow AV nodal pathway as the anterograde limb and left atrial fibers that approach the AV node from the left side of the inter-atrial septum as the retrograde limb.

However, a recent ( 2008 – 2011 ) attempt to introduce military uniforms made of warm synthetic fibers was made in Russia, it resulted in many soldiers getting frostbites and pneumonia.

However, no matter how exotic the method of propagation, and no matter the material system, the sole driver for most that time has been the transportation of light from one point to another, whether by step-index confinement determined by simple Fresnel reflections or by coherent Fresnel reflections in bandgap fibers such as Bragg fibers.

However, they continue to course with the parasympathetic fibers innervating the lacrimal gland.

However, at maximum load, the anaerobic processes contract so forcefully that the aerobic fibers are completely shut out, and all work is done by the anaerobic processes.

" However, for cordage and other non-metallic appliances, the tools used are generally limited to sharp edges or blades such as a sheepsfoot blade, occasionally a fine needle for proper whipping of laid rope, a hot cutter for Nylon and other synthetic fibers, and ( for larger ropes ) a shoe for smoothing out large knots by rolling them on the ground.