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- Laboratory (5761 bytes)
44: ...ocedures unless a trained chemist or scientist is present. - Iodine (11416 bytes)
174: ...irst [[extinct radionuclide]] to be identified as present in the early [[solar system]]. Its decay is the ... - Iron (23778 bytes)
147: ... and small amounts of [[manganese]]. Contaminants present in pig iron that negatively affect the material p...
188: The flux is present to melt impurities in the ore, principally [[sili...
229: ...particular interest to nuclear scientists as it represents the most stable nucleus possible. It is not poss...
230: ... ago. The abundance of <sup>60</sup>[[nickel|Ni]] present in [[extraterrestrial]] material may also provide... - Magnesium (9193 bytes)
42: Although magnesium is present in many foods, it usually occurs in small amounts... - Aluminium (26079 bytes)
116: ...ed during the operation, since there is no oxygen present at the cathode. The carbon cathode is protected b...
120: Electric power represents about 20 to 40% of the cost of producing alumini...
136: ...eak up the normal aluminium oxide barrier usually present. Within a few hours, even a heavy structural beam...
155: *Aluminium suboxide, AlO can be shown to be present when aluminium powder burns in oxygen. - Molybdenum (10247 bytes)
181: ...s a byproduct of [[copper]] mining. Molybdenum is present in [[ore]]s from 0.01% to about 0.5%. About half ...
186: ...es. Plants and animals generally have molybdenum, present in amounts of a few parts per million. In plants,... - Neodymium (12345 bytes)
106: Neodymium, a [[rare earth]] [[metal]], is present in [[misch metal]] to the extent of about 18%. Th... - Nickel (13955 bytes)
201: ...changes in oxidation state, and evidence has been presented that the nickel center might be the active site...
203: A nickel-tetrapyrrole coenzyme, Co-F430, is present in the methyl CoM reductase and in [[methanogen]]...
222: ...mpurities such as [[cobalt]] or [[carbon]] may be present. Kamacite occurs in nickel-iron meteorites.
229: ...p>Ni. Therefore, the abundance of <sup>60</sup>Ni present in extraterrestrial material may provide insight ... - Oxygen (9039 bytes)
37: ...e oxygen in later geological epochs and up to the present has been largely driven by terrestrial [[plant|pl... - Potassium (12496 bytes)
136: ... are another source of potassium but the quantity present in a given volume of [[seawater]] is relatively l... - Sodium (8714 bytes)
57: ...pressure forcing interaction that is not normally present. While under pressure, solid sodium assumes seve... - Strontium (11493 bytes)
168: ...s in [[celestite]] and [[strontianite]]. Sr-90 is present in [[radioactive]] [[nuclear fallout|fallout]] an...
176: At present the primary use for strontium is in [[glass]] for...
204: ...rs. It is a by-product of [[nuclear fallout]] and presents a health problem since it substitutes for calciu... - Sulfur (18059 bytes)
65: ...rain. This extracted sulfur is then refined and represents a large portion of sulfur production.
84: ...us]] that may be a sulfur deposit. Sulfur is also present in many types of [[meteorite]]s. - Technetium (32113 bytes)
223: ... beam of [[electron]]s and deduced element 43 was present by examining [[X-ray]] diffraction [[spectrogram]...
250: ...both [[uranium]]-235 and [[plutonium]]-239, it is present in [[radioactive waste]] of fission reactors and ... - Titanium (20884 bytes)
150: ...n the [[Earth]]'s crust (0.6% by [[mass]]) and is present in most [[igneous rock]]s and in [[sedimentary ro...
168: ...es]] get their asterism from the titanium dioxide present in them. [[Titanate]]s are compounds made with ti... - Tungsten (13647 bytes)
192: ...between tungsten and leukemia is not available at present. - Vanadium (13808 bytes)
136: ...ub>2</sub>O]]<nowiki>]</nowiki>. Vanadium is also present in [[bauxite]], and in [[carbon]] containing depo... - Genetics (12654 bytes)
3: ...ally is carried in [[chromosome]]s, where it is represented in the [[DNA sequence|chemical structure]] of p...
34: ...hargaff]] shows that the four nucleotides are not present in nucleic acids in stable proportions, but that ... - Aegean civilization (41260 bytes)
33: ...primitive [[Neolithic]] period. This period is represented by a [[stratum]],at [[Knossos]] in places nearl...
67: ...an monarch had maritime relations with Egypt, and presently sent his wares all over the south Aegean (e.g. ...
73: ...e of one spirit and common models. In religious representations it shows the same anthropomorphic personifi...
89: ...on and mate of the goddess, and the divine pair represented the genius of [[Reproductive Fertility]] in its...
93: ...s]], probably more or less religious, are often represented, e.g. bullfighting, dancing, boxing, armed comb... - Lion (11511 bytes)
74: ...rowth inhibiting gene from the female lion is not present, ligers are larger than either parent. It is sai...
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